Boeing B-29 Superfortress

<h2 id="design-and-development">Design and development</h2>

Boeing began work on long-range bombers in 1938. Boeing's design study for the Model 334 was a pressurized derivative of the <a href="/facts/Boeing_B-17_Flying_Fortress/HaAfKHKg">Boeing B-17 Flying Fortress</a> with <a href="/facts/Tricycle_landing_gear/sJa9zC3y">nosewheel undercarriage</a>. Although the Air Corps lacked funds to pursue the design, Boeing continued development with its own funds as a private venture.<a class="footnote-ref" id="fnref:2" href="#fn:2">2</a> In December 1939, the Air Corps issued a formal <a href="/facts/Specification_(technical_standard)/xEMUsktp">specification</a> for a so-called "superbomber" that could deliver 20,000 lb (9,100 kg) of bombs to a target 2,667 mi (4,292 km) away, and at a speed of 400 mph (640 km/h). Boeing's previous private venture studies formed the starting point for its response to the Air Corps formal specification.<a class="footnote-ref" id="fnref:3" href="#fn:3">3</a>
On 29 January 1940, the <a href="/facts/United_States_Army_Air_Corps/f5FK5BKQ">United States Army Air Corps</a> issued a request to five major aircraft manufacturers to submit designs for a four-engine <a href="/facts/Bomber/YKEYbswu">bomber</a> with a range of 2,000 miles (3,200 km).<a class="footnote-ref" id="fnref:4" href="#fn:4">4</a> Boeing submitted its Model 345 on 11 May 1940,<a class="footnote-ref" id="fnref:5" href="#fn:5">5</a> in competition with designs from <a href="/facts/Consolidated_Aircraft/EvG8DdoI">Consolidated Aircraft</a> (the Model 33, which later became the <a href="/facts/Consolidated_B-32_Dominator/FbJJUSYm">B-32</a>),<a class="footnote-ref" id="fnref:6" href="#fn:6">6</a> <a href="/facts/Lockheed_Corporation/FymLE6jf">Lockheed</a> (the <a href="/facts/Lockheed_XB-30/5JgSdbnq">Lockheed XB-30</a>),<a class="footnote-ref" id="fnref:7" href="#fn:7">7</a> and <a href="/facts/Douglas_Aircraft_Company/vkkFDEhB">Douglas</a> (the <a href="/facts/Douglas_XB-31/LG5KEBXB">Douglas XB-31</a>).<a class="footnote-ref" id="fnref:8" href="#fn:8">8</a>
Douglas and Lockheed soon abandoned work on their projects, but Boeing received an order on 24 August 1940 for two flying <a href="/facts/Prototypes/q0yPLYdb">prototypes</a>, which were given the designation XB-29, and an airframe for static testing. The order was revised to add a third flying aircraft on 14 December. Consolidated continued to work on its Model 33, as it was seen by the Air Corps as a backup if there were problems with Boeing's design.<a class="footnote-ref" id="fnref:9" href="#fn:9">9</a> These designs were evaluated, and on 6 September orders were placed for two experimental models each from Boeing and Consolidated, which became the Boeing B-29 Superfortress and the Consolidated B-32 Dominator.<a class="footnote-ref" id="fnref:10" href="#fn:10">10</a> These were known as very long range (VLR) bombers; the name "Superfortress" was not assigned until March 1944.<a class="footnote-ref" id="fnref:11" href="#fn:11">11</a> On 17 May 1941, Boeing received an initial production order for 14 service test aircraft and 250 production bombers;<a class="footnote-ref" id="fnref:12" href="#fn:12">12</a><a class="footnote-ref" id="fnref:13" href="#fn:13">13</a> this being increased to 500 aircraft in January 1942.<a class="footnote-ref" id="fnref:14" href="#fn:14">14</a>
Manufacturing the B-29 was a complex task that involved four main-assembly factories. There were two Boeing operated plants at <a href="/facts/Renton%2c_Washington/aLppoa4m">Renton, Washington</a> (<a href="/facts/Boeing_Renton_Factory/rsJJX34y">Boeing Renton Factory</a>), and one in <a href="/facts/Wichita%2c_Kansas/5LkemgL9">Wichita, Kansas</a> (now <a href="/facts/Spirit_AeroSystems/k6GpjqHc">Spirit AeroSystems</a>), a <a href="/facts/Bell_Aircraft_Corporation/yH9LdFjI">Bell</a> plant at <a href="/facts/Marietta%2c_Georgia/2B4F4kLo">Marietta, Georgia</a>, near <a href="/facts/Atlanta/8hPVGb78">Atlanta</a> ("Bell-Atlanta"), and a <a href="/facts/Glenn_L._Martin_Company/RnRRsWQc">Martin</a> plant at <a href="/facts/Bellevue%2c_Nebraska/93ExtoPf">Bellevue, Nebraska</a> ("Martin-Omaha" – <a href="/facts/Offutt_Air_Force_Base/gDJx1Mly">Offutt Field</a>).<a class="footnote-ref" id="fnref:15" href="#fn:15">15</a><a class="footnote-ref" id="fnref:16" href="#fn:16">16</a> Thousands of <a href="/facts/Subcontractor/UtX6DGad">subcontractors</a> were also involved in the project.<a class="footnote-ref" id="fnref:17" href="#fn:17">17</a> The first prototype made its maiden flight from <a href="/facts/Boeing_Field/qqLFV7A9">Boeing Field</a>, <a href="/facts/Seattle/7lYIrCa6">Seattle</a>, on 21 September 1942.<a class="footnote-ref" id="fnref:18" href="#fn:18">18</a> The combined effects of the aircraft's highly advanced design, challenging requirements, immense pressure for production, and hurried development caused setbacks. Unlike the unarmed first prototype,<a class="footnote-ref" id="fnref:19" href="#fn:19">19</a> the second was fitted with a Sperry defensive armament system using remote-controlled gun turrets sighted by periscopes. It first flew on 30 December 1942, although the flight was terminated due to a serious engine fire.<a class="footnote-ref" id="fnref:20" href="#fn:20">20</a>
On 18 February 1943, the second prototype, flying out of Boeing Field in Seattle, experienced an engine fire and crashed.<a class="footnote-ref" id="fnref:21" href="#fn:21">21</a> The crash killed Boeing test pilot <a href="/facts/Edmund_T._Allen/JCtkSX3S">Edmund T. Allen</a> and his 10-man crew, 20 workers at the Frye Meat Packing Plant, and a Seattle firefighter.<a class="footnote-ref" id="fnref:22" href="#fn:22">22</a> Changes to the production craft came so often and so fast that, in early 1944, B-29s flew from the production lines directly to modification depots for extensive rebuilds to incorporate the latest changes. AAF-contracted modification centers and its own air depot system struggled to handle the scope of the requirements. Some facilities lacked hangars capable of housing the giant B-29, requiring outdoor work in freezing weather, further delaying necessary modification. By the end of 1943, although almost 100 aircraft had been delivered, only 15 were airworthy.<a class="footnote-ref" id="fnref:23" href="#fn:23">23</a><a class="footnote-ref" id="fnref:24" href="#fn:24">24</a> This prompted an intervention by General <a href="/facts/Henry_H._Arnold/eIUWbVg7">Hap Arnold</a> to resolve the problem, with production personnel being sent from the factories to the modification centers to speed availability of sufficient aircraft to equip the first <a href="/facts/Group_(air_force_unit)/C3XWoLD0">bomb groups</a> in what became known as the "<a href="/facts/Battle_of_Kansas/D2UJf8Ud">Battle of Kansas</a>". This resulted in 150 aircraft being modified in the five weeks, between 10 March and 15 April 1944.<a class="footnote-ref" id="fnref:25" href="#fn:25">25</a><a class="footnote-ref" id="fnref:26" href="#fn:26">26</a><a class="footnote-ref" id="fnref:27" href="#fn:27">27</a>
The most common cause of maintenance headaches and catastrophic failures was the engines.<a class="footnote-ref" id="fnref:28" href="#fn:28">28</a> Although the <a href="/facts/Wright_R-3350_Duplex-Cyclone/1AnowCoR">Wright R-3350 Duplex-Cyclone</a> <a href="/facts/Radial_engine/tS0ljlb7">radial engines</a> later became a trustworthy workhorse in large piston-engined aircraft, early models were beset with dangerous reliability problems. This problem was not fully cured until the aircraft was fitted with the more powerful <a href="/facts/Pratt_%2526_Whitney_Wasp_Major/TTawIq5o">Pratt & Whitney R-4360 "Wasp Major"</a> in the <a href="/facts/Boeing_B-29_Superfortress_variants/ThHYR3Fz">B-29D</a>/B-50 program, which arrived too late for <a href="/facts/World_War_II/2efV5L1U">World War II</a>. Interim measures included cuffs placed on propeller blades to divert a greater flow of cooling air into the intakes, which had baffles installed to direct a stream of air onto the exhaust valves. Oil flow to the valves was also increased, <a href="/facts/Asbestos/dEnjQyee">asbestos</a> baffles were installed around rubber <a href="/facts/Push_rod/zd4v8vWf">push rod</a> fittings to prevent oil loss, thorough pre-flight inspections were made to detect unseated valves, and mechanics frequently replaced the uppermost five cylinders (every 25 hours of engine time) and the entire engines (every 75 hours).<a class="footnote-ref" id="fnref:29" href="#fn:29">29</a><a class="footnote-ref" id="fnref:30" href="#fn:30">30</a><a class="footnote-ref" id="fnref:31" href="#fn:31">31</a>
Pilots, including the present-day pilots of the <a href="/facts/Commemorative_Air_Force/QVpEbQw0">Commemorative Air Force</a>'s <a href="/facts/FIFI_(aircraft)/1Hs17Jzv">Fifi</a>, one of the last two remaining flying B-29s, describe flight after takeoff as being an urgent struggle for airspeed (generally, flight after takeoff should consist of striving for altitude). Radial engines need airflow to keep them cool, and failure to get up to speed as soon as possible could result in an engine failure and risk of fire. One useful technique was to check the magnetos while already on takeoff roll rather than during a conventional static engine-runup before takeoff.<a class="footnote-ref" id="fnref:32" href="#fn:32">32</a>
The $3 billion cost of design and production (equivalent to $52 billion in 2022),<a class="footnote-ref" id="fnref:33" href="#fn:33">33</a> far exceeding the $1.9 billion cost of the <a href="/facts/Manhattan_Project/gtg8yRK2">Manhattan Project</a>, made the B-29 program the most expensive of the war.<a class="footnote-ref" id="fnref:34" href="#fn:34">34</a><a class="footnote-ref" id="fnref:35" href="#fn:35">35</a> Unit cost was US$639,188<a class="footnote-ref" id="fnref:36" href="#fn:36">36</a> (prototype cost $3,392,396.60)<a class="footnote-ref" id="fnref:37" href="#fn:37">37</a>

<h2 id="features">Features</h2>

<h3>Defensive gun turret emplacements</h3>

In wartime, the B-29 was capable of flight at altitudes up to 31,850 feet (9,710 m),<a class="footnote-ref" id="fnref:38" href="#fn:38">38</a> at speeds of up to 350 mph (560 km/h; 300 kn) (<a href="/facts/True_airspeed/aHdFdAjl">true airspeed</a>). This was its best defense because Japanese fighters could barely reach that altitude, and few could catch the B-29 even if they did attain that altitude.
The General Electric Central Fire Control system on the B-29 directed four remotely controlled turrets armed with two <a href="/facts/M2_Browning/mwbqBGBQ">.50 Browning M2 machine guns</a> each.<a class="footnote-ref" id="fnref:39" href="#fn:39">39</a> All weapons were aimed optically, with targeting computed by analog electrical instrumentation. There were five interconnected sighting stations located in the nose and tail positions and three Plexiglas blisters in the central fuselage.<a class="footnote-ref" id="fnref:40" href="#fn:40">40</a> Five <a href="/facts/General_Electric/bBm5CzVY">General Electric</a> <a href="/facts/Analog_computers/3NhYoCML">analog computers</a> (one dedicated to each sight) increased the weapons' accuracy by compensating for factors such as airspeed, <a href="/facts/Deflection_(military)/LL5sNNoT">lead</a>, gravity, temperature and humidity. The computers also allowed a single gunner to operate two or more turrets (including tail guns) simultaneously. The gunner in the upper position acted as fire control officer, managing the distribution of turrets among the other gunners during combat.<a class="footnote-ref" id="fnref:41" href="#fn:41">41</a><a class="footnote-ref" id="fnref:42" href="#fn:42">42</a><a class="footnote-ref" id="fnref:43" href="#fn:43">43</a><a class="footnote-ref" id="fnref:44" href="#fn:44">44</a> The tail position initially had two .50 Browning machine guns and a single <a href="/facts/M2_cannon/qck4SP9e">M2 20 mm cannon</a>. Later aircraft had the 20 mm cannon removed,<a class="footnote-ref" id="fnref:45" href="#fn:45">45</a> sometimes replaced by a third machine gun.<a class="footnote-ref" id="fnref:46" href="#fn:46">46</a>
In early 1945, Major General <a href="/facts/Curtis_Lemay/CB3oYE9P">Curtis Lemay</a>, commander of <a href="/facts/XXI_Bomber_Command/EfP0aTao">XXI Bomber Command</a>—the Marianas-based B-29-equipped bombing force—ordered most of the defensive armament and remote-controlled sighting equipment removed from the B-29s under his command. The affected aircraft had the same reduced defensive firepower as the nuclear weapons-delivery intended <a href="/facts/Silverplate/mpQGeCDm">Silverplate</a> B-29 airframes and could carry greater fuel and bomb loads as a result of the change. The lighter defensive armament was made possible by a change in mission from high-altitude, daylight bombing with high explosive bombs to low-altitude night raids using incendiary bombs.<a class="footnote-ref" id="fnref:47" href="#fn:47">47</a> As a consequence of that requirement, Bell Atlanta (BA) produced a series of 311 B-29Bs that had turrets and sighting equipment omitted, except for the tail position, which was fitted with AN/APG-15 fire-control radar.<a class="footnote-ref" id="fnref:48" href="#fn:48">48</a> That version could also have an improved <a href="/facts/List_of_radars/LT5VMhpy">APQ-7</a> "Eagle" bombing-through-overcast radar fitted in an airfoil-shaped radome under the fuselage. Most of those aircraft were assigned to the 315th Bomb Wing, Northwest Field, Guam.<a class="footnote-ref" id="fnref:49" href="#fn:49">49</a>

<h3>Pressurization</h3>
The crew would enjoy, for the first time in a bomber, full-pressurization comfort. This first-ever cabin pressure system for an Allied production bomber was developed for the B-29 by <a href="/facts/Garrett_AiResearch/vVEtfe5n">Garrett AiResearch</a>.<a class="footnote-ref" id="fnref:50" href="#fn:50">50</a> Both the forward and rear crew compartments were to be pressurized, but the designers had to decide whether to have bomb bays that were not pressurized or a fully pressurized <a href="/facts/Fuselage/vVXlHEE4">fuselage</a> that would have to be de-pressurized prior to opening the bomb bay doors. The solution was to have bomb bays that were not pressurized and a long tunnel joining the forward and rear crew compartments. Crews could use the tunnel if necessary to crawl from one pressurized compartment to the other.<a class="footnote-ref" id="fnref:51" href="#fn:51">51</a>

<h2 id="operational-history">Operational history</h2>
<h3>World War II</h3>
See also: <a href="/facts/Air_raids_on_Japan/986l9aub">Air raids on Japan</a>

In September 1941, the <a href="/facts/United_States_Army_Air_Forces/0mtva6Cw">United States Army Air Forces</a>' (AAF) plans for war against Germany and Japan proposed basing the B-29 in Egypt for operations against Germany, as British airbases were likely to be overcrowded.<a class="footnote-ref" id="fnref:52" href="#fn:52">52</a><a class="footnote-ref" id="fnref:53" href="#fn:53">53</a> Air Force planning throughout 1942 and early 1943 continued to have the B-29 deployed initially against Germany, transferring to the Pacific only after the end of the war in Europe. By the end of 1943, plans had changed, partly due to production delays, and the B-29 was dedicated to the Pacific Theater.<a class="footnote-ref" id="fnref:54" href="#fn:54">54</a> A new plan implemented at the direction of President <a href="/facts/Franklin_D._Roosevelt/HtG9vMQv">Franklin D. Roosevelt</a> as a promise to China, called <a href="/facts/Operation_Matterhorn/QFXGb9GQ">Operation Matterhorn</a>, deployed the B-29 units to attack Japan from four forward bases in <a href="/facts/Guangxi/1BIHzs3q">southern China</a>, with five main bases in <a href="/facts/India/1kKHcnxM">India</a>, and to attack other targets in the region from China and India as needed.<a class="footnote-ref" id="fnref:55" href="#fn:55">55</a> The <a href="/facts/Chengdu/0o7w6dvR">Chengdu</a> region was eventually chosen over the <a href="/facts/Guilin/3RVWu8oB">Guilin</a> region to avoid having to raise, equip, and train 50 Chinese divisions to protect the advanced bases from Japanese ground attack.<a class="footnote-ref" id="fnref:56" href="#fn:56">56</a> The <a href="/facts/XX_Bomber_Command/t81FB4nS">XX Bomber Command</a>, initially intended to be two combat wings of four groups each, was reduced to a single wing of four groups because of the lack of availability of aircraft, automatically limiting the effectiveness of any attacks from China.
This was an extremely costly scheme, as there was no overland connection available between India and China, and all supplies had to be flown over the <a href="/facts/Himalayas/eRSf0yyE">Himalayas</a>, either by transport aircraft or by B-29s themselves, with some aircraft being stripped of armor and guns and used to deliver fuel. B-29s started to arrive in India in early April 1944. The first B-29 flight to airfields in China (over the Himalayas, or "<a href="/facts/The_Hump/h0GFqeD0">The Hump</a>") took place on 24 April 1944. The <a href="/facts/Bombing_of_Bangkok_in_World_War_II/D8GwfxCY">first B-29 combat mission</a> was flown on 5 June 1944, with 77 out of 98 B-29s launched from India bombing the railroad shops in <a href="/facts/Bangkok/WRxftcFz">Bangkok</a> and elsewhere in <a href="/facts/Thailand/GCUnN4JK">Thailand</a>. Five B-29s were lost during the mission, none to hostile fire.<a class="footnote-ref" id="fnref:57" href="#fn:57">57</a><a class="footnote-ref" id="fnref:58" href="#fn:58">58</a>

<h4>Forward base in China</h4>
On 5 June 1944, B-29s raided <a href="/facts/Bombing_of_Bangkok_in_World_War_II/D8GwfxCY">Bangkok</a>, in what is reported as a test before being deployed against the <a href="/facts/Japanese_home_islands/zvCaDa4M">Japanese home islands</a>. Sources do not report from where they launched and vary as to the numbers involved—77, 98, and 114 being claimed. Targets were <a href="/facts/Memorial_Bridge%2c_Bangkok/APWqxIA4">Bangkok's Memorial Bridge</a> and a major power plant. Bombs fell over two kilometers away, damaged no civilian structures, but destroyed some <a href="/facts/Tram/gSaKExyR">tram</a> lines, and destroyed both a Japanese military hospital and the <a href="/facts/Japanese_secret_police/gINavmHm">Japanese secret police</a> headquarters.<a class="footnote-ref" id="fnref:59" href="#fn:59">59</a> On 15 June 1944, 68 B-29s took off from bases around Chengdu, 47 B-29s <a href="/facts/Bombing_of_Yawata_(June_1944)/KGFbxgm3">bombed the Imperial Iron and Steel Works</a> at <a href="/facts/Yahata%2c_Fukuoka/RFvcyJx4">Yawata</a>, <a href="/facts/Fukuoka_Prefecture/5oWJfGgY">Fukuoka Prefecture</a>, <a href="/facts/Japan/U5mz0SRT">Japan</a>. This was the first attack on Japanese islands since the <a href="/facts/Doolittle_raid/f4BFwLoT">Doolittle raid</a> in April 1942.<a class="footnote-ref" id="fnref:60" href="#fn:60">60</a> The first B-29 combat losses occurred during this raid, with one B-29 destroyed on the ground by Japanese fighters after an emergency landing in China,<a class="footnote-ref" id="fnref:61" href="#fn:61">61</a> one lost to anti-aircraft fire over Yawata, and another, the Stockett's Rocket (after Capt. Marvin M. Stockett, Aircraft Commander) B-29-1-BW 42-6261,<a class="footnote-ref" id="fnref:62" href="#fn:62">62</a> disappeared after takeoff from Chakulia, India, over the Himalayas (12 KIA, 11 crew and one passenger).<a class="footnote-ref" id="fnref:63" href="#fn:63">63</a> This raid, which did little damage to the target, with only one bomb striking the target factory complex,<a class="footnote-ref" id="fnref:64" href="#fn:64">64</a> nearly exhausted fuel stocks at the Chengdu B-29 bases, resulting in a slow-down of operations until the fuel stockpiles could be replenished.<a class="footnote-ref" id="fnref:65" href="#fn:65">65</a> Starting in July, the raids against Japan from Chinese airfields continued at relatively low intensity. Japan was bombed on:

<ul><li>7 July 1944 (14 B-29s)</li>
<li>29 July (70+)</li>
<li>10 August (24)</li>
<li>20 August (61)<a class="footnote-ref" id="fnref:66" href="#fn:66">66</a></li>
<li>8 September (90)</li>
<li>26 September (83)</li>
<li>25 October (59)</li>
<li>12 November (29)</li>
<li>21 November (61)</li>
<li>19 December (36)</li>
<li>6 January 1945 (49)</li></ul>

B-29s were withdrawn from airfields in China by the end of January 1945. Throughout the prior period, B-29 raids were also launched from China and India against many other targets throughout <a href="/facts/Southeast_Asia/VafwT517">Southeast Asia</a>, including a <a href="/facts/Bombing_of_Singapore_(1944%25E2%2580%25931945)/e7V9GpHh">series of raids on Singapore</a> and Thailand. On 2 November 1944, 55 B-29s raided Bangkok's <a href="/facts/Bang_Sue_District/UqcDVKSd">Bang Sue</a> marshaling yards in the largest raid of the war. Seven <a href="/facts/Royal_Thai_Air_Force/e6GyKclu">RTAF</a> <a href="/facts/Nakajima_Ki-43/tFbRqM7e">Nakajima Ki-43</a> Hayabusas from Foong Bin (Air Group) 16 and 14 IJAAF Ki-43s attempted intercept. RTAF Flt Lt Therdsak Worrasap attacked a B-29, damaging it, but was shot down by return fire. One B-29 was lost, possibly the one damaged by Flt Lt Therdsak.<a class="footnote-ref" id="fnref:67" href="#fn:67">67</a> On 14 April 1945, a second B-29 raid on Bangkok destroyed two key power plants and was the last major attack conducted against Thai targets.<a class="footnote-ref" id="fnref:68" href="#fn:68">68</a> The B-29 effort was gradually shifted to the new bases in the <a href="/facts/Mariana_Islands/BNdPBDQg">Mariana Islands</a> in the <a href="/facts/Central_Pacific_Area/L4AQykuV">Central Pacific</a>, with the last B-29 combat mission from India flown on 29 March 1945.

<h4>New Mariana Islands air bases</h4>
In addition to the logistical problems associated with operations from China, the B-29 could reach only a limited part of Japan while flying from Chinese bases. The solution to this problem was to capture the <a href="/facts/Mariana_Islands/BNdPBDQg">Mariana Islands</a>, which would bring targets such as <a href="/facts/Tokyo/GTvuw4ct">Tokyo</a>, about 1,500 mi (2,400 km) north of the Marianas within range of B-29 attacks. The Joint Chiefs of Staff agreed in December 1943 to seize the Marianas.<a class="footnote-ref" id="fnref:69" href="#fn:69">69</a>
US forces <a href="/facts/Battle_of_Saipan/dhaQls7F">invaded Saipan</a> on 15 June 1944. Despite a Japanese naval counterattack which led to the <a href="/facts/Battle_of_the_Philippine_Sea/Nvpl6Yeq">Battle of the Philippine Sea</a> and heavy fighting on land, Saipan was secured by 9 July.<a class="footnote-ref" id="fnref:70" href="#fn:70">70</a> Operations followed against <a href="/facts/Battle_of_Guam_(1944)/dF75Y9Iq">Guam</a> and <a href="/facts/Battle_of_Tinian/ofeVevEL">Tinian</a>, with all three islands secured by August.<a class="footnote-ref" id="fnref:71" href="#fn:71">71</a>
Naval construction battalions (<a href="/facts/Seabees/FRzSm8VS">Seabees</a>) began at once to construct air bases suitable for the B-29, commencing even before the end of ground fighting.<a class="footnote-ref" id="fnref:72" href="#fn:72">72</a> In all, five major airfields were built: two on the flat island of <a href="/facts/Tinian/k1laa5kg">Tinian</a>, one on <a href="/facts/Saipan/d8k8nEMK">Saipan</a>, and two on <a href="/facts/Guam/z77Ql3fM">Guam</a>. Each was large enough to eventually accommodate a bomb wing consisting of four bomb groups, giving a total of 180 B-29s per airfield.<a class="footnote-ref" id="fnref:73" href="#fn:73">73</a> These bases could be supplied by ship and, unlike the bases in China, were not vulnerable to attack by Japanese ground forces.
The bases became the launch sites for the large B-29 raids against Japan in the final year of the war. The first B-29 arrived on Saipan on 12 October 1944, and the first combat mission was launched from there on 28 October 1944, with 14 B-29s attacking the <a href="/facts/Chuuk_Atoll/qrkBLm1o">Truk</a> atoll. The 73rd Bomb Wing launched the first mission against Japan from bases in the Marianas, on 24 November 1944, sending 111 B-29s to attack <a href="/facts/Tokyo/GTvuw4ct">Tokyo</a>. For this first attack on the Japanese capital since the <a href="/facts/Doolittle_Raid/f4BFwLoT">Doolittle Raid</a> in April 1942, <a href="/facts/73rd_Bomb_Wing/xXKV9VVf">73rd Bomb Wing</a> wing commander <a href="/facts/Brigadier_General/PwvzgxKv">Brigadier General</a> <a href="/facts/Emmett_O%2527Donnell_Jr./s3TBVqsS">Emmett O'Donnell Jr.</a> acted as mission command pilot in B-29 <a href="/facts/Dauntless_Dotty/FkIKLQD2">Dauntless Dotty</a>.
The campaign of incendiary raids started with the bombardment of <a href="/facts/Kobe/BRn7TPho">Kobe</a> on 4 February 1945, then peaked early with the most destructive bombing raid in history (even when the later Silverplate-flown nuclear attacks on Hiroshima and Nagasaki are considered)<a class="footnote-ref" id="fnref:74" href="#fn:74">74</a> <a href="/facts/Operation_Meetinghouse/ynBKMrRM">on the night of 9–10 March 1945</a> on Tokyo. From then on, the raids intensified, being launched regularly until the end of the war. The attacks succeeded in devastating most large Japanese cities (with the exception of Kyoto and four that were reserved for nuclear attacks), and gravely damaged Japan's war industries. Although less publicly appreciated, the mining of Japanese ports and shipping routes (<a href="/facts/Operation_Starvation/WSAlL9Rt">Operation Starvation</a>) carried out by B-29s from April 1945 reduced Japan's ability to support its population and move its troops.

<h4>Nuclear weapons</h4>
The most famous B-29s were the <a href="/facts/Silverplate/mpQGeCDm">Silverplate</a> series, being extensively modified to carry nuclear weapons. Early consideration was given to using the British <a href="/facts/Avro_Lancaster/9ndbwh9b">Lancaster</a> as a nuclear bomber, as this would require less modification.<a class="footnote-ref" id="fnref:75" href="#fn:75">75</a><a class="footnote-ref" id="fnref:76" href="#fn:76">76</a> However, the superior range and high-altitude performance of the B-29 made it a much better choice, and after the B-29 began to be modified in November 1943 for carrying the atomic bomb, the suggestion for using the Lancaster never came up again.<a class="footnote-ref" id="fnref:77" href="#fn:77">77</a><a class="footnote-ref" id="fnref:78" href="#fn:78">78</a>
The most significant modification was the enlargement of the bomb bay enabling each aircraft to carry either the Thinman or Fatman weapons. These Silverplate bombers differed from other B-29s then in service by having <a href="/facts/Fuel_injection/0u4SxFyG">fuel injection</a> and <a href="/facts/Variable-pitch_propeller_(aeronautics)/IC1o922Q">reversible props</a>. Also, to make a lighter aircraft, the Silverplate B-29s were stripped of all guns, except for those on the tail. Pilot Charles Sweeney credits the reversible props for saving Bockscar after making an emergency landing on Okinawa following the Nagasaki bombing.<a class="footnote-ref" id="fnref:79" href="#fn:79">79</a>

<a href="/facts/Enola_Gay/BGxIUjxe">Enola Gay</a>, flown by <a href="/facts/Colonel_(United_States)/eva6u8ok">Colonel</a> <a href="/facts/Paul_Tibbets/pmR8CzEJ">Paul Tibbets</a>, dropped the first bomb, called <a href="/facts/Little_Boy/4XAsA7xT">Little Boy</a>, on <a href="/facts/Hiroshima/WuFDhz14">Hiroshima</a> on 6 August 1945.<a class="footnote-ref" id="fnref:80" href="#fn:80">80</a> Enola Gay is fully restored and on display at the Smithsonian's <a href="/facts/Steven_F._Udvar-Hazy_Center/SPGdDfmT">Steven F. Udvar-Hazy Center</a>, outside Dulles Airport near Washington, D.C. <a href="/facts/Bockscar/jLByqD2Y">Bockscar</a>, piloted by <a href="/facts/Major_(United_States)/le6LWL3Y">Major</a> <a href="/facts/Charles_W._Sweeney/LJxboEB6">Charles W. Sweeney</a>, dropped the second bomb, called <a href="/facts/Fat_Man/2vlxvS9a">Fat Man</a>, on <a href="/facts/Nagasaki%2c_Nagasaki/5HMR4mnp">Nagasaki</a> three days later.<a class="footnote-ref" id="fnref:81" href="#fn:81">81</a> Bockscar is on display at the <a href="/facts/National_Museum_of_the_United_States_Air_Force/5LPvHCld">National Museum of the United States Air Force</a>.<a class="footnote-ref" id="fnref:82" href="#fn:82">82</a>
Following the surrender of Japan, called <a href="/facts/Victory_over_Japan_Day/0kH7hcmF">V-J Day</a>, B-29s were used for other purposes. A number supplied <a href="/facts/Prisoner_of_war/X22JC3Fj">POWs</a> with food and other necessities by dropping barrels of rations on Japanese POW camps. In September 1945, a long-distance flight was undertaken for public relations purposes: Generals <a href="/facts/Barney_M._Giles/J9k8v1rD">Barney M. Giles</a>, <a href="/facts/Curtis_LeMay/CB3oYE9P">Curtis LeMay</a>, and <a href="/facts/Emmett_O%2527Donnell_Jr./s3TBVqsS">Emmett O'Donnell Jr.</a> piloted three specially modified B-29s from <a href="/facts/Chitose_Air_Base/ArrmaBDK">Chitose Air Base</a> in <a href="/facts/Hokkaid%25C5%258D/kwacDkYD">Hokkaidō</a> to <a href="/facts/Chicago_Midway_International_Airport/ICKzV7Eh">Chicago Municipal Airport</a>, continuing to <a href="/facts/Washington%2c_D.C./enXPK156">Washington, D.C.</a>, the farthest nonstop distance (6,400 miles or 10,300 kilometers) to that date flown by U.S. Army Air Forces aircraft and the <a href="/facts/1945_Japan%25E2%2580%2593Washington_flight/SwSVllaI">first-ever nonstop flight from Japan to Chicago</a>.<a class="footnote-ref" id="fnref:83" href="#fn:83">83</a><a class="footnote-ref" id="fnref:84" href="#fn:84">84</a> Two months later, Colonel Clarence S. Irvine commanded another modified B-29, Pacusan Dreamboat, in a world-record-breaking long-distance flight from Guam to Washington, D.C., traveling 7,916 miles (12,740 km) in 35 hours,<a class="footnote-ref" id="fnref:85" href="#fn:85">85</a> with a gross takeoff weight of 155,000 pounds (70,000 kg).<a class="footnote-ref" id="fnref:86" href="#fn:86">86</a> Almost a year later, in October 1946, the same B-29 flew 9,422 miles (15,163 km) nonstop from Oahu, Hawaii, to Cairo, Egypt, in less than 40 hours, demonstrating the possibility of routing airlines over the polar ice cap.<a class="footnote-ref" id="fnref:87" href="#fn:87">87</a>

<h4>B-29s in Europe and Australia</h4>

Although considered for other theaters, and briefly evaluated in the UK, the B-29 was exclusively used in World War II in the <a href="/facts/Asiatic-Pacific_Theater/L0L2Fo1b">Pacific Theatre</a>. The use of YB-29-BW 41-36393, the so-named Hobo Queen, one of the service test aircraft flown around several British airfields in early 1944,<a class="footnote-ref" id="fnref:88" href="#fn:88">88</a> was part of a "disinformation" program from its mention in an American-published Sternenbanner German-language propaganda leaflet from <a href="/facts/Leap_Year_Day/lJscEwUh">Leap Year Day</a> in 1944, meant to be circulated within the Reich,<a class="footnote-ref" id="fnref:89" href="#fn:89">89</a> with the intent to deceive the Germans into believing that the B-29 would be deployed to Europe.<a class="footnote-ref" id="fnref:90" href="#fn:90">90</a>
American post-war military assistance programs loaned the RAF 87 Superfortresses, to equip eight <a href="/facts/RAF_Bomber_Command/XzVaU9Jp">RAF Bomber Command</a> squadrons. The aircraft was known as the Washington B.1 in RAF service and served from March 1950 until the last bombers were returned in March 1954.<a class="footnote-ref" id="fnref:91" href="#fn:91">91</a> Deployment was restricted to long-range training for strategic attacks against the Soviet Union, which was beyond the range of the RAF's <a href="/facts/Avro_Lincoln/GvmaGryM">Avro Lincolns</a>. The phase-out was occasioned by deliveries of the <a href="/facts/English_Electric_Canberra/K9of7fJ7">English Electric Canberra</a> bombers.<a class="footnote-ref" id="fnref:92" href="#fn:92">92</a>
Three Washingtons modified for <a href="/facts/Signals_intelligence/Iwzvw6AW">ELINT</a> duties and a standard bomber version used for support by <a href="/facts/No._192_Squadron_RAF/fafIoSFz">No. 192 Squadron RAF</a> were decommissioned in 1958, being replaced by <a href="/facts/De_Havilland_Comet/4QKGYkFq">de Havilland Comet</a> aircraft.
Two British Washington B.1 aircraft were transferred to the <a href="/facts/Royal_Australian_Air_Force/kkCS5X4E">Royal Australian Air Force</a> (RAAF) in 1952.<a class="footnote-ref" id="fnref:93" href="#fn:93">93</a> They were attached to the <a href="/facts/Aircraft_Research_and_Development_Unit_RAAF/XvNC4kA3">Aircraft Research and Development Unit</a> and used in trials conducted on behalf of the British <a href="/facts/Ministry_of_Supply/9SuX037b">Ministry of Supply</a>.<a class="footnote-ref" id="fnref:94" href="#fn:94">94</a> Both aircraft were placed in storage in 1956 and were sold for scrap in 1957.<a class="footnote-ref" id="fnref:95" href="#fn:95">95</a>

<h3>Soviet Tupolev Tu-4</h3>
Main article: <a href="/facts/Tupolev_Tu-4/oLj2b54A">Tupolev Tu-4</a>

At the end of WWII, Soviet development of modern four-engine heavy bombers lagged behind the West. The <a href="/facts/Petlyakov_Pe-8/e1a1apvQ">Petlyakov Pe-8</a>—the sole heavy bomber operated by the <a href="/facts/Soviet_Air_Forces/9UwGvVhU">Soviet Air Forces</a>—first flew in 1936. Intended to replace the obsolete <a href="/facts/Tupolev_TB-3/IsBYee32">Tupolev TB-3</a>, only 93 Pe-8s were built by the end of WWII. During 1944 and 1945, four B-29s made emergency landings in Soviet territory after bombing raids on Japanese Manchuria and Japan. In accordance with <a href="/facts/Soviet%25E2%2580%2593Japanese_Neutrality_Pact/10u12T8F">Soviet neutrality in the Pacific War</a>, the bombers were interned by the Soviets despite American requests for their return. Rather than return the aircraft, the Soviets <a href="/facts/Reverse_engineering/pmJCV7J7">reverse engineered</a> the American B-29s and used them as a pattern for the <a href="/facts/Tupolev_Tu-4/oLj2b54A">Tupolev Tu-4</a>.<a class="footnote-ref" id="fnref:96" href="#fn:96">96</a>
On 31 July 1944, Ramp Tramp (<a href="/facts/United_States_military_aircraft_serials/Hrtj4hbY">serial number</a> 42-6256), of the United States Army Air Forces <a href="/facts/462d_Strategic_Aerospace_Wing/jxNnJneG">462nd (Very Heavy) Bomb Group</a> was diverted to <a href="/facts/Vladivostok/NQQrTaMY">Vladivostok</a>, <a href="/facts/Russia/jfkCwyxn">Russia</a>, after an engine failed and the propeller could not be <a href="/facts/Propeller_(aircraft)/6d4y4bEr">feathered</a>.<a class="footnote-ref" id="fnref:97" href="#fn:97">97</a> This B-29 was part of a 100-aircraft raid against the Japanese Showa steel mill in <a href="/facts/Anshan/ehxBrPvH">Anshan</a>, <a href="/facts/Manchuria/XTv2sK1o">Manchuria</a>.<a class="footnote-ref" id="fnref:98" href="#fn:98">98</a> On 20 August 1944, Cait Paomat (42-93829), flying from Chengdu, was damaged by anti-aircraft gunfire during a raid on the Yawata Iron Works. Due to the damage it sustained, the crew elected to divert to the Soviet Union. The aircraft crashed in the foothills of <a href="/facts/Sikhote-Alin/YJaxMBol">Sikhote-Alin</a> mountain range east of <a href="/facts/Khabarovsk/5CkxXBQC">Khabarovsk</a> after the crew bailed out.
On 11 November 1944, during a night raid on Omura in Kyushu, Japan, the General H. H. Arnold Special (42-6365) was damaged and forced to divert to Vladivostok in the Soviet Union. The crew was interned.<a class="footnote-ref" id="fnref:99" href="#fn:99">99</a> On 21 November 1944, Ding How (42-6358) was damaged during a raid on an aircraft factory at Omura and was also forced to divert to Vladivostok.<a class="footnote-ref" id="fnref:100" href="#fn:100">100</a>
The interned crews of these four B-29s were allowed to escape into American-occupied Iran in January 1945, but none of the B-29s were returned after Stalin ordered the <a href="/facts/Tupolev/qsUlAgRw">Tupolev</a> <a href="/facts/OKB/Tf3D8le0">OKB</a> to examine and copy the B-29 and produce a design ready for quantity production as soon as possible.<a class="footnote-ref" id="fnref:101" href="#fn:101">101</a><a class="footnote-ref" id="fnref:102" href="#fn:102">102</a>
Because aluminum in the USSR was supplied in different gauges from that available in the US (metric vs imperial),<a class="footnote-ref" id="fnref:103" href="#fn:103">103</a> the entire aircraft had to be extensively re-engineered. In addition, Tupolev substituted his own favored airfoil sections for those used by Boeing, with the Soviets themselves already having their own <a href="/facts/Wright_R-1820/omQKlIo7">Wright R-1820</a>-derived 18 cylinder radial engine, the <a href="/facts/Shvetsov_ASh-73/WwNKn5rl">Shvetsov ASh-73</a> of comparable power and displacement to the B-29's Duplex Cyclone radials available to power their design. In 1947, the Soviets debuted both the Tupolev Tu-4 (<a href="/facts/NATO/dCeTddMY">NATO</a> ASCC code named Bull), and the <a href="/facts/Tupolev_Tu-70/jAEkxMS2">Tupolev Tu-70</a> transport variant. The Soviets used tail-gunner positions similar to the B-29 in many later bombers and transports.<a class="footnote-ref" id="fnref:104" href="#fn:104">104</a><a class="footnote-ref" id="fnref:105" href="#fn:105">105</a>

<h3>Transition to USAF</h3>
Production of the B-29 was phased out after WWII, with the last example completed by Boeing's Renton factory on 28 May 1946. Many aircraft went into storage, being declared excess inventory, and were ultimately scrapped as surplus. Others remained in the active inventory and equipped the <a href="/facts/Strategic_Air_Command/Qp0Y5xpB">Strategic Air Command</a> when it formed on 21 March 1946.<a class="footnote-ref" id="fnref:106" href="#fn:106">106</a><a class="footnote-ref" id="fnref:107" href="#fn:107">107</a> In particular, the "Silverplate" modified aircraft of the 509th Composite Group remained the only aircraft capable of delivering the atomic bomb, and so the unit was involved in the <a href="/facts/Operation_Crossroads/tGWLh14I">Operation Crossroads</a> series of tests, with B-29 <a href="/facts/Big_Stink_(B-29)/0uFKWX7Q">Dave's Dream</a> dropping a Fat Man bomb in Test Able on 1 July 1946.<a class="footnote-ref" id="fnref:108" href="#fn:108">108</a>
Some B-29s, fitted with filtered air sampling scoops, were used to monitor above-ground nuclear weapons testing by the US and the USSR by sampling airborne radioactive <a href="/facts/Nuclear_fallout/I1kJkLKt">contamination</a>. The USAF also used the aircraft for long-range weather reconnaissance (WB-29), for <a href="/facts/Signals_intelligence/Iwzvw6AW">signals intelligence</a> gathering (EB-29) and photographic reconnaissance (RB-29).

<h3>Korean War and postwar service</h3>

The B-29 was used in 1950–1953 in the <a href="/facts/Korean_War/Qo93pNhE">Korean War</a>. At first, the bomber was used in normal strategic day-bombing missions, although North Korea's few strategic targets and industries were quickly destroyed. More importantly, in 1950 numbers of Soviet <a href="/facts/Mikoyan-Gurevich_MiG-15/UmfVFcSQ">MiG-15</a> jet fighters appeared over Korea, and after the loss of 28 aircraft, future B-29 raids were restricted to night missions, largely in a supply-interdiction role.
The B-29 dropped the 1,000 lb (450 kg) VB-3 "Razon" (a range-controllable version of the earlier <a href="/facts/Azon/QV5TqxSM">Azon</a> guided ordnance device)<a class="footnote-ref" id="fnref:109" href="#fn:109">109</a> and the 12,000 lb (5,400 kg) VB-13 "<a href="/facts/ASM-A-1_Tarzon/AUBvDsvN">Tarzon</a>" <a href="/facts/MCLOS/bcJK8ejJ">MCLOS</a> radio-controlled bombs<a class="footnote-ref" id="fnref:110" href="#fn:110">110</a> in Korea, mostly for demolishing major bridges, like the ones across the <a href="/facts/Yalu_River/aPuIXhrb">Yalu River</a>, and for attacks on dams. The aircraft also was used for numerous leaflet drops in North Korea, such as those for <a href="/facts/Operation_Moolah/6DAtcTqz">Operation Moolah</a>.<a class="footnote-ref" id="fnref:111" href="#fn:111">111</a>
A Superfortress of the <a href="/facts/91st_Strategic_Reconnaissance_Squadron/EQJ44SbR">91st Strategic Reconnaissance Squadron</a> flew the last B-29 mission of the war on 27 July 1953.
Over the course of the war, B-29s flew 20,000 sorties and dropped 200,000 tonnes (220,000 tons) of bombs. B-29 gunners were credited with shooting down 27 enemy aircraft.<a class="footnote-ref" id="fnref:112" href="#fn:112">112</a> In turn 78 B-29s were lost; 57 B-29 and reconnaissance variants were lost in action and 21 were non-combat losses.<a class="footnote-ref" id="fnref:113" href="#fn:113">113</a>
Soviet records show that one MiG-15 jet fighter was shot down by a B-29 during the war. This occurred on 6 December 1950, when a B-29 shot down Lieutenant N. Serikov.<a class="footnote-ref" id="fnref:114" href="#fn:114">114</a>
With the arrival of the mammoth <a href="/facts/Convair_B-36/GUwVqxkc">Convair B-36</a>, the B-29 was reclassified as a medium bomber by the Air Force. The later <a href="/facts/Boeing_B-50_Superfortress/ULHCvKpF">B-50 Superfortress</a> variant (initially designated <a href="/facts/Boeing_B-29_Superfortress_variants/ThHYR3Fz">B-29D</a>) was able to handle auxiliary roles such as <a href="/facts/Air-sea_rescue/y2Y7c2Ef">air-sea rescue</a>, electronic intelligence gathering, <a href="/facts/Aerial_refueling/VMV3xXlW">air-to-air refueling</a>, and <a href="/facts/Weather_reconnaissance/2f67FJtT">weather reconnaissance</a>.
The B-50D was replaced in its primary role during the early 1950s by the <a href="/facts/Boeing_B-47_Stratojet/0yIq9SWy">Boeing B-47 Stratojet</a>, which in turn was replaced by the <a href="/facts/Boeing_B-52_Stratofortress/uIXzSmPy">Boeing B-52 Stratofortress</a>. The final active-duty KB-50 and WB-50 variants were phased out in the mid-1960s, with the final example retired in 1965. A total of 3,970 B-29s were built.

<h2 id="variants">Variants</h2>

Main article: <a href="/facts/Boeing_B-29_Superfortress_variants/ThHYR3Fz">Boeing B-29 Superfortress variants</a>

The variants of the B-29 were outwardly similar in appearance but were built around different wing center sections that affected the wingspan dimensions. The wing of the Renton-built B-29A-BN used a different subassembly process and was a foot longer in span. The Georgia-built B-29B-BA weighed less through armament reduction. A planned C series with more reliable R-3350s was not built.
Moreover, engine packages changed, including the type of propellers and range of the variable pitch. A notable example was the eventual 65 airframes (up to 1947's end) for the <a href="/facts/Silverplate/mpQGeCDm">Silverplate</a> and successor-name "Saddletree" specifications built for the <a href="/facts/Manhattan_Project/gtg8yRK2">Manhattan Project</a> with Curtiss Electric reversible pitch propellers.
The other differences came through added equipment for varied mission roles. These roles included cargo carriers (CB); rescue aircraft (SB); weather ships (WB); and trainers (TB); and aerial tankers (KB).
Some were used for odd purposes such as flying relay television transmitters under the name of <a href="/facts/Stratovision/xghg9R8d">Stratovision</a>.

The B-29D led progressively to the XB-44, and the family of <a href="/facts/B-50_Superfortress/ULHCvKpF">B-50 Superfortress</a> (which was powered by four 3,500 hp (2,600 kW) <a href="/facts/Pratt_%2526_Whitney_R-4360/TTawIq5o">Pratt & Whitney R-4360</a>-35 Wasp Major engines).
Another role was as a mothership. This included being rigged for carrying the experimental <a href="/facts/Parasite_fighter/33bTefjN">parasite fighter</a> aircraft, such as the <a href="/facts/McDonnell_XF-85_Goblin/ASmJJ1DE">McDonnell XF-85 Goblin</a> and <a href="/facts/Republic_F-84_Thunderjet/dN6FRpjw">Republic F-84 Thunderjets</a> as in flight lock on and offs. It was also used to develop the <a href="/facts/Airborne_Early_Warning/VXDQUphK">Airborne Early Warning</a> program; it was the ancestor of various modern radar picket aircraft. A B-29 with the original Wright Duplex Cyclone powerplants was used to air-launch the <a href="/facts/Bell_X-1/aF8D50BT">Bell X-1</a> supersonic research rocket aircraft, as well as <a href="/facts/Cherokee_(rocket)/0DpGGS6K">Cherokee</a> rockets for the testing of ejection seats.<a class="footnote-ref" id="fnref:115" href="#fn:115">115</a>
Some B-29s were modified to act as testbeds for various new systems or special conditions, including fire-control systems, cold-weather operations, and various armament configurations. Several converted B-29s were used to experiment with <a href="/facts/Aerial_refueling/VMV3xXlW">aerial refueling</a> and re-designated as <a href="/facts/Boeing_KB-29/CHoSuscP">KB-29s</a>. Perhaps the most important tests were conducted by the XB-29G. It carried prototype <a href="/facts/Jet_engine/CJjFpeqt">jet engines</a> in its bomb bay, and lowered them into the air stream to conduct measurements.

<h2 id="operators">Operators</h2>
Main article: <a href="/facts/List_of_B-29_Superfortress_operators/u0MGbYLS">List of B-29 Superfortress operators</a>
 <a href="/facts/Australia/qLHpbppq">Australia</a>
<ul><li><a href="/facts/Royal_Australian_Air_Force/kkCS5X4E">Royal Australian Air Force</a> (two former RAF aircraft for trials)</li></ul>
 <a href="/facts/United_Kingdom/kuPAILt2">United Kingdom</a>
<ul><li><a href="/facts/Royal_Air_Force/P10CbL5H">Royal Air Force</a> (87 loaned from the USAF as the Washington B.1)</li></ul>
 <a href="/facts/United_States/P0sCdLe5">United States</a>
<ul><li><a href="/facts/United_States_Army_Air_Forces/0mtva6Cw">United States Army Air Forces</a></li>
<li><a href="/facts/United_States_Air_Force/7MxWBYlc">United States Air Force</a></li>
<li><a href="/facts/United_States_Navy/xYK0fUou">United States Navy</a> (four former USAF aircraft designated as <a href="/facts/Boeing_B-29_Superfortress_variants/ThHYR3Fz">P2B patrol bombers</a>)</li></ul>
 <a href="/facts/Soviet_Union/m7wWsPto">Soviet Union</a>
<ul><li><a href="/facts/Soviet_Air_Forces/9UwGvVhU">Soviet Air Forces</a> (three USAAF B-29s made emergency landings in the USSR during WWII, and were never returned; they were reverse-engineered to make the Soviet <a href="/facts/Tupolev_Tu-4/oLj2b54A">Tupolev Tu-4</a> "Bull" bomber.)</li></ul>
<h2 id="surviving-aircraft">Surviving aircraft</h2>
Main article: <a href="/facts/List_of_surviving_Boeing_B-29_Superfortresses/jqzveUFL">List of surviving Boeing B-29 Superfortresses</a>

Twenty-two B-29s are preserved at various museums worldwide, including two flying examples; <a href="/facts/FIFI_(aircraft)/1Hs17Jzv">FIFI</a>, which belongs to the <a href="/facts/Commemorative_Air_Force/QVpEbQw0">Commemorative Air Force</a>, and <a href="/facts/Doc_(aircraft)/djaPEnx8">Doc</a>, which belongs to Doc's Friends. Doc made its first flight in 60 years from Wichita, Kansas, on 17 July 2016.<a class="footnote-ref" id="fnref:116" href="#fn:116">116</a><a class="footnote-ref" id="fnref:117" href="#fn:117">117</a> The public is being invited to inspect and take a short paid flight in Doc and Fifi at various venues.<a class="footnote-ref" id="fnref:118" href="#fn:118">118</a><a class="footnote-ref" id="fnref:119" href="#fn:119">119</a>
Three of the Silverplate B-29s modified to drop nuclear bombs survived. Superfortress 44-86292 <a href="/facts/Enola_Gay/BGxIUjxe">Enola Gay</a> (nose number 82), which dropped the first atomic bomb, was fully restored and placed on display at the <a href="/facts/Smithsonian/pqC74ta9">Smithsonian</a>'s <a href="/facts/Steven_F._Udvar-Hazy_Center/SPGdDfmT">Steven F. Udvar-Hazy Center of the National Air & Space Museum</a> near <a href="/facts/Washington_Dulles_International_Airport/LVrznPXy">Washington Dulles International Airport</a> in 2003.<a class="footnote-ref" id="fnref:120" href="#fn:120">120</a><a class="footnote-ref" id="fnref:121" href="#fn:121">121</a> The B-29 that dropped <a href="/facts/Fat_Man/2vlxvS9a">Fat Man</a> on <a href="/facts/Atomic_bombings_of_Hiroshima_and_Nagasaki/fRpj8aJA">Nagasaki</a>, Superfortress 44-27297 <a href="/facts/Bockscar/jLByqD2Y">Bockscar</a> (nose number 77), is restored and on display at the <a href="/facts/National_Museum_of_the_United_States_Air_Force/5LPvHCld">National Museum of the United States Air Force</a> at <a href="/facts/Wright-Patterson_AFB/6EWFomSD">Wright-Patterson AFB</a> in Dayton, Ohio, posed with a replica of the Mark 3 Fat Man nuclear bomb.<a class="footnote-ref" id="fnref:122" href="#fn:122">122</a> The third is Superfortress 45-21748, which was delivered on 9 August 1945 and is on display at the <a href="/facts/National_Museum_of_Nuclear_Science_and_History/6hIjJen7">National Museum of Nuclear Science and History</a> in Albuquerque, New Mexico.<a class="footnote-ref" id="fnref:123" href="#fn:123">123</a><a class="footnote-ref" id="fnref:124" href="#fn:124">124</a>
Only two of the twenty-two museum aircraft are outside the United States: It's Hawg Wild at the <a href="/facts/Imperial_War_Museum_Duxford/CrSDmumW">Imperial War Museum Duxford</a> and another at the <a href="/facts/KAI_Aerospace_Museum/rgALEbFT">KAI Aerospace Museum</a> in <a href="/facts/Sachon/JcaJ96PT">Sachon</a>, South Korea.<a class="footnote-ref" id="fnref:125" href="#fn:125">125</a>

<h2 id="accidents-and-incidents">Accidents and incidents</h2>

Notable accidents and incidents involving B-29s include:

<ul><li>The 1947 crash of the <a href="/facts/Kee_Bird/ovkYKds2">Kee Bird</a> in Greenland during a flight to the geographic North Pole,<a class="footnote-ref" id="fnref:126" href="#fn:126">126</a> and its subsequent destruction in 1995 during a recovery attempt.<a class="footnote-ref" id="fnref:127" href="#fn:127">127</a></li>
<li>The <a href="/facts/1948_Waycross_B-29_crash/4Ma7qUay">1948 Waycross B-29 crash</a>, which resulted in the <a href="/facts/United_States_v._Reynolds/64DsaFMh">United States v. Reynolds</a> lawsuit regarding <a href="/facts/State_secrets_privilege/JGP2GVqA">state secrets privilege</a>.<a class="footnote-ref" id="fnref:128" href="#fn:128">128</a></li>
<li>The <a href="/facts/1948_Lake_Mead_Boeing_B-29_crash/1jwBRMwS">1948 Lake Mead Boeing B-29 crash</a> during the "Sun Tracker" project that aimed to develop an intercontinental ballistic missile guidance system that used the sun for direction and positioning.<a class="footnote-ref" id="fnref:129" href="#fn:129">129</a></li>
<li>The 3 November 1948 crash at <a href="/facts/Bleaklow/BRKL1PD8">Bleaklow</a> moor near <a href="/facts/Glossop/vrEQPNce">Glossop</a>, Derbyshire, England. <a href="/facts/Bleaklow_Bomber/VtqXHAl8">Much of the wreckage is still exposed</a> and can be reached by a 2 miles (3.2 km) walk from the summit of <a href="/facts/Snake_Pass/N1uUyoc7">Snake Pass</a>, starting along the <a href="/facts/Pennine_Way/h4bJaca5">Pennine Way</a> footpath through Devil's Dyke.<a class="footnote-ref" id="fnref:130" href="#fn:130">130</a><a class="footnote-ref" id="fnref:131" href="#fn:131">131</a></li>
<li>On 11 April 1950 a B-29 departed <a href="/facts/Kirtland_Air_Force_Base/srxERFso">Kirtland Air Force Base</a> and crashed into a mountain on <a href="/facts/Manzano_Base/mzbYSu5c">Manzano Base</a> approximately three minutes later, killing the crew. Detonators were installed in the <a href="/facts/Nuclear_bomb/QVdBcMdm">nuclear bomb</a> on the aircraft. The bomb case was demolished and some high-explosive (HE) material burned in the fire. Both the weapon and the capsule of nuclear material were on board but the capsule was not inserted in the bomb for safety reasons, so no nuclear detonation was possible.<a class="footnote-ref" id="fnref:132" href="#fn:132">132</a></li>
<li>On 5 August 1950, a B-29 carrying a <a href="/facts/Mark_4_nuclear_bomb/jW3aCkcl">Mark 4 nuclear bomb</a> <a href="/facts/1950_Fairfield-Suisun_Boeing_B-29_crash/IJoFdQ6H">crashed shortly after takeoff</a> from <a href="/facts/Fairfield-Suisun_Air_Force_Base/jca1nyw0">Fairfield-Suisun Air Force Base</a> with 20 men on board. Twelve men were killed in the crash, including <a href="/facts/Brigadier_general_(United_States)/Tes7xlzp">Brigadier General</a> <a href="/facts/Robert_F._Travis/Ax60cdV9">Robert F. Travis</a>, and another seven on the ground when the aircraft exploded.<a class="footnote-ref" id="fnref:133" href="#fn:133">133</a><a class="footnote-ref" id="fnref:134" href="#fn:134">134</a><a class="footnote-ref" id="fnref:135" href="#fn:135">135</a> The base was later renamed after Travis.<a class="footnote-ref" id="fnref:136" href="#fn:136">136</a></li></ul>
<h2 id="specifications">Specifications</h2>

Data from Quest for Performance<a class="footnote-ref" id="fnref:137" href="#fn:137">137</a>General characteristics
<ul><li>Crew: 11 (Pilot, co-pilot, bombardier, flight engineer, navigator, radio operator, radar observer, right gunner, left gunner, central fire control, tail gunner)</li>
<li>Length: 99 ft 0 in (30.18 m)</li>
<li>Wingspan: 141 ft 3 in (43.05 m)</li>
<li>Height: 27 ft 9 in (8.46 m)</li>
<li>Wing area: 1,736 sq ft (161.3 m2)</li>
<li><a href="/facts/Aspect_ratio_(aeronautics)/9dFXqYAV">Aspect ratio</a>: 11.5</li>
<li><a href="/facts/Airfoil/2d3l6hKd">Airfoil</a>: root: Boeing 117 (22%); tip: Boeing 117 (9%)<a class="footnote-ref" id="fnref:138" href="#fn:138">138</a></li>
<li><a href="/facts/Zero-lift_drag_coefficient/pwku0WRY">Zero-lift drag coefficient</a>: 0.0241</li>
<li><a href="/facts/Zero-lift_drag_coefficient/pwku0WRY">Frontal area:</a> 41.16 sq ft (3.824 m2)</li>
<li>Empty weight: 74,500 lb (33,793 kg)</li>
<li>Gross weight: 120,000 lb (54,431 kg)</li>
<li>Max takeoff weight: 133,500 lb (60,555 kg) </li></ul>
135,000 lb (61,000 kg) combat overload
<ul><li>Powerplant: 4 × <a href="/facts/Wright_R-3350-23_Duplex-Cyclone/1AnowCoR">Wright R-3350-23 Duplex-Cyclone</a> 18-cylinder air-cooled <a href="/facts/Turbocharger/xuabwHlB">turbosupercharged</a> <a href="/facts/Radial_engine/tS0ljlb7">radial piston engines</a>, 2,200 hp (1,600 kW) each</li>
<li>Propellers: 4-bladed constant-speed fully-feathering propellers, 16 ft 7 in (5.05 m) diameter</li></ul>
Performance

<ul><li>Maximum speed: 357 mph (575 km/h, 310 kn)</li>
<li>Cruise speed: 220 mph (350 km/h, 190 kn)</li>
<li>Stall speed: 105 mph (169 km/h, 91 kn)</li>
<li>Range: 3,250 mi (5,230 km, 2,820 nmi)</li>
<li>Ferry range: 5,600 mi (9,000 km, 4,900 nmi)</li>
<li>Service ceiling: 31,850 ft (9,710 m) <a class="footnote-ref" id="fnref:139" href="#fn:139">139</a></li>
<li>Rate of climb: 900 ft/min (4.6 m/s)</li>
<li>Lift-to-drag: 16.8</li>
<li>Wing loading: 69.12 lb/sq ft (337.5 kg/m2)</li>
<li><a href="/facts/Power-to-weight_ratio/NykmM0pr">Power/mass</a>: 0.073 hp/lb (0.120 kW/kg)</li></ul>
Armament

<ul><li>Guns: <ul><li>10 × <a href="/facts/.50_BMG/oADnDkyC">.50 in</a> (12.7 mm) <a href="/facts/M2_Browning_machine_gun/mwbqBGBQ">Browning M2/ANs</a> in remote-controlled turrets.<a class="footnote-ref" id="fnref:140" href="#fn:140">140</a> (omitted from Silverplate B-29s)</li><li>2 × .50 BMG and 1× <a href="/facts/20_mm_caliber/JIlxeNbs">20 mm</a> <a href="/facts/M2_cannon/qck4SP9e">M2 cannon</a> in tail position (the cannon was later removed)<a class="footnote-ref" id="fnref:141" href="#fn:141">141</a></li></ul></li>
<li>Bombs: <a class="footnote-ref" id="fnref:142" href="#fn:142">142</a><ul><li>5,000 lb (2,300 kg) over 1,600 miles (2,600 km; 1,400 nmi) radius at high altitude</li><li>12,000 lb (5,400 kg) over 1,600 miles (2,600 km; 1,400 nmi) radius at medium altitude</li><li>20,000 lb (9,100 kg) maximum over short distances at low altitude</li><li>Could be modified to carry two 22,000 lb (10,000 kg) <a href="/facts/Grand_Slam_(bomb)/c5QUNEbD">Grand Slam bombs</a> externally, or one 44,600 pound <a href="/facts/T-12_Cloudmaker/Ph5RJmcD">T-12 Cloudmaker</a> deep penetration bomb.<a class="footnote-ref" id="fnref:143" href="#fn:143">143</a></li><li><a href="/facts/Little_Boy/4XAsA7xT">Mark I</a>, <a href="/facts/Fat_Man/2vlxvS9a">Mark III</a>, <a href="/facts/Mark_4_nuclear_bomb/jW3aCkcl">Mark 4</a> and <a href="/facts/Mark_6_nuclear_bomb/GnsGuY2N">Mark 6</a> nuclear bombs (only Silverplate versions of the aircraft).<a class="footnote-ref" id="fnref:144" href="#fn:144">144</a><a class="footnote-ref" id="fnref:145" href="#fn:145">145</a></li></ul></li></ul>
<h2 id="notable-appearances-in-media">Notable appearances in media</h2>
Main article: <a href="/facts/Aircraft_in_fiction/YrkIBwXf">Aircraft in fiction</a>
<h2 id="see-also">See also</h2>
<ul>
<li>Aviation portal</li></ul>
<ul><li><a href="/facts/Air_warfare_of_World_War_II/dGnChKdY">Air warfare of World War II</a></li>
<li><a href="/facts/AN%2fAPQ-13/BWCdBsSK">AN/APQ-13</a></li></ul>

Aircraft of comparable role, configuration, and era

<ul><li><a href="/facts/Amerikabomber/eVBz2v4V">Amerikabomber</a></li>
<li><a href="/facts/Avro_Lincoln/GvmaGryM">Avro Lincoln</a></li>
<li><a href="/facts/Nakajima_G8N/AkLjtlab">Nakajima G8N Renzan</a></li>
<li><a href="/facts/Heinkel_He_277/EczCAaSz">Heinkel He 277</a></li>
<li><a href="/facts/Junkers_Ju_290/aTBcW27x">Junkers Ju 290</a></li>
<li><a href="/facts/Messerschmitt_Me_264/fEBkPz7B">Messerschmitt Me 264</a></li>
<li><a href="/facts/Victory_Bomber/aPKeDPjc">Victory Bomber</a></li></ul>

Related lists

<ul><li><a href="/facts/List_of_aircraft_of_World_War_II/bxsNPfvu">List of aircraft of World War II</a></li>
<li><a href="/facts/List_of_bomber_aircraft/aAGWSHVe">List of bomber aircraft</a></li>
<li><a href="/facts/List_of_military_aircraft_of_the_United_States/jTsQeQdE">List of military aircraft of the United States</a></li></ul>

<h3>Notes</h3>

<h3>Citations</h3>

<h3>Bibliography</h3>
<ul><li>Bowers, Peter M. Boeing Aircraft since 1916. London: Putnam, 1989. <a href="/facts/ISBN_(identifier)/15AdSPa9">ISBN</a> 0-85177-804-6.</li>
<li>Bowers, Peter M. Boeing B-29 Superfortress. Stillwater, Minnesota: Voyageur Press, 1999. <a href="/facts/ISBN_(identifier)/15AdSPa9">ISBN</a> 0-933424-79-5.</li>
<li>Brown, J. "RCT Armament in the Boeing B-29". <a href="/facts/Air_Enthusiast/nwFyK41v">Air Enthusiast</a>, Number Three, 1977, pp. 80–83. <a href="/facts/ISSN_(identifier)/DPAflDvU">ISSN</a> <a href="https://www.worldcat.org/search?fq=x0:jrnl&q=n2:0143-5450">0143-5450</a></li>
<li>Campbell, Richard H., The Silverplate Bombers: A History and Registry of the Enola Gay and Other B-29s Configured to Carry Atomic Bombs. Jefferson, North Carolina: McFarland & Company, Inc., 2005. <a href="/facts/ISBN_(identifier)/15AdSPa9">ISBN</a> 0-7864-2139-8.</li>
<li>Cate, James Lea (1953). Craven, Wesley Frank; Cate, James Lea (eds.). <a href="https://media.defense.gov/2010/Nov/05/2001329890/-1/-1/0/AFD-101105-012.pdf">The Pacific: Matterhorn to Nagasaki June 1944 to August 1945</a> (PDF). The Army Air Forces in World War II. Volume 5. Chicago and London: The University of Chicago Press. <a href="/facts/OCLC_(identifier)/Yqad8waq">OCLC</a> <a href="https://search.worldcat.org/oclc/9828710">9828710</a> – via Hyperwar Foundation.</li>
<li>Clarke, Chris. <a href="https://www.popularmechanics.com/military/weapons/a18343/the-cannons-on-the-b-29-bomber-were-a-mid-century-engineering-masterpiece/">"The Cannons on the B-29 Bomber Were a Mid-Century Engineering Masterpiece"</a>, <a href="/facts/Popular_Mechanics/AUHUPsqy">Popular Mechanics</a>, 30 November 2015.</li>
<li>Craven, Wesley Frank and James Lea Cate, eds. <a href="http://www.afhso.af.mil/shared/media/document/AFD-101105-005.pdf">The Army Air Forces In World War II: Volume One: Plans and Early Operations: January 1939 to August 1942</a> <a href="https://web.archive.org/web/20161018133446/http://www.afhso.af.mil/shared/media/document/AFD-101105-005.pdf">Archived</a> 18 October 2016 at the <a href="/facts/Wayback_Machine/nmQ3a6JC">Wayback Machine</a>. Washington, D.C.: Office of Air Force History, 1983.</li>
<li>Craven, Wesley Frank and James Lea Cate, eds. <a href="http://www.afhso.af.mil/shared/media/document/AFD-101105-006.pdf">The Army Air Forces In World War II: Volume Two: Europe: Torch to Pointblank August 1942 to December 1943</a> <a href="https://web.archive.org/web/20161123153734/http://www.afhso.af.mil/shared/media/document/AFD-101105-006.pdf">Archived</a> 23 November 2016 at the <a href="/facts/Wayback_Machine/nmQ3a6JC">Wayback Machine</a>. Washington, D.C.: Office of Air Force History, 1983.</li>
<li>Craven, Wesley Frank and James Lea Cate, eds. <a href="http://www.afhso.af.mil/shared/media/document/AFD-101105-012.pdf">The Army Air Forces In World War II: Volume Five: The Pacific: Matterhorn to Nagasaki June 1944 to August 1945</a>[dead link]. Washington, D.C.: Office of Air Force History, 1983.</li>
<li>Dear, I.C.B. and M.R.D. Foo, eds. The Oxford Companion of World War II. Oxford, UK: Oxford University Press, 1995. <a href="/facts/ISBN_(identifier)/15AdSPa9">ISBN</a> 0-19-866225-4.</li>
<li>Francillon, René J. McDonnell Douglas Aircraft since 1920. London: Putnam, 1979. <a href="/facts/ISBN_(identifier)/15AdSPa9">ISBN</a> 0-370-00050-1.</li>
<li>Futrell R.F. et al. Aces and Aerial Victories: The United States Air Force in Southeast Asia, 1965–1973. Washington, D.C.: Office of Air Force History, 1976. <a href="/facts/ISBN_(identifier)/15AdSPa9">ISBN</a> 0-89875-884-X.</li>
<li>Herman, Arthur. Freedom's Forge: How American Business Produced Victory in World War II. New York: Random House, 2012. <a href="/facts/ISBN_(identifier)/15AdSPa9">ISBN</a> 978-1-4000-6964-4.</li>
<li>Johnson, Robert E. "Why the Boeing B-29 Bomber, and Why the Wright R-3350 Engine?" American Aviation Historical Society Journal, 33(3), 1988, pp. 174–189. ISSN 0002-7553.</li>
<li>Knaack, Marcelle Size. Post-World War II Bombers, 1945–1973. Washington, D.C.: Office of Air Force History, 1988. <a href="/facts/ISBN_(identifier)/15AdSPa9">ISBN</a> 0-16-002260-6.</li>
<li>LeMay, Curtis and Bill Yenne. Super Fortress. London: <a href="/facts/Berkley_Books/1uYb5Yv2">Berkley Books</a>, 1988. <a href="/facts/ISBN_(identifier)/15AdSPa9">ISBN</a> 0-425-11880-0.</li>
<li>Lewis, Peter M. H., ed. "B-29 Superfortress". Academic American Encyclopedia. Volume 10. Chicago: Grolier Incorporated, 1994. <a href="/facts/ISBN_(identifier)/15AdSPa9">ISBN</a> 978-0-7172-2053-3.</li>
<li>Lloyd, Alwyn T. B-29 Superfortress, Part 1. Production Versions (Detail & Scale 10). Fallbrook, California/London: Aero Publishers/Arms & Armour Press, Ltd., 1983. <a href="/facts/ISBN_(identifier)/15AdSPa9">ISBN</a> 0-8168-5019-4, 0-85368-527-4.</li>
<li>Lloyd, Alwyn T. B-29 Superfortress. Part 2. Derivatives (Detail & Scale 25). Blue Ridge Summit, Pennsylvania/London: TAB Books/Arms & Armour Press, Ltd., 1987. <a href="/facts/ISBN_(identifier)/15AdSPa9">ISBN</a> 0-8306-8035-7, 0-85368-839-7</li>
<li>Mann, Robert A. The B-29 Superfortress: A Comprehensive Registry of the Planes and Their Missions. Jefferson, North Carolina: McFarland & Company, 2004. <a href="/facts/ISBN_(identifier)/15AdSPa9">ISBN</a> 0-7864-1787-0.</li>
<li>Mann, Robert A. The B-29 Superfortress Chronology, 1934–1960. Jefferson, North Carolina: McFarland & Company, 2009. <a href="/facts/ISBN_(identifier)/15AdSPa9">ISBN</a> 0-7864-4274-3.</li>
<li>Marshall, Chester. Warbird History: B-29 Superfortress. St. Paul, Minnesota: Motorbooks International, 1993. <a href="/facts/ISBN_(identifier)/15AdSPa9">ISBN</a> 0-87938-785-8.</li>
<li>Pace, Steve. Boeing B-29 Superfortress. Ramsbury, Marlborough, Wiltshire, United Kingdom: Crowood Press, 2003. <a href="/facts/ISBN_(identifier)/15AdSPa9">ISBN</a> 1-86126-581-6.</li>
<li>Peacock, Lindsay. "Boeing B-29... First of the Superbombers, Part One." <a href="/facts/Air_International/NY3Krxq6">Air International</a>, August 1989, Vol. 37, No. 2, pp. 68–76, 87. <a href="/facts/ISSN_(identifier)/DPAflDvU">ISSN</a> <a href="https://www.worldcat.org/search?fq=x0:jrnl&q=n2:0306-5634">0306-5634</a></li>
<li>Peacock, Lindsay. "Boeing B-29... First of the Superbombers, Part Two." Air International, September 1989, Vol. 37, No. 3, pp. 141–144, 150–151. <a href="/facts/ISSN_(identifier)/DPAflDvU">ISSN</a> <a href="https://www.worldcat.org/search?fq=x0:jrnl&q=n2:0306-5634">0306-5634</a></li>
<li>Vander Meulen, Jacob. Building the B-29. Washington, D.C.: Smithsonian Books, 1995. <a href="/facts/ISBN_(identifier)/15AdSPa9">ISBN</a> 1-56098-609-3.</li>
<li>Wegg, John. General Dynamics Aircraft and their Predecessors. London: Putnam, 1990. <a href="/facts/ISBN_(identifier)/15AdSPa9">ISBN</a> 0-85177-833-X.</li>
<li>White, Jerry. Combat Crew and Unit Training in the AAF 1939–1945. USAF Historical Study No. 61. Washington, D.C.: Center for Air Force History, 1949.</li>
<li>Williams, Anthony G. and Emmanuel Gustin. Flying Guns World War II: Development of Aircraft Guns, Ammunition and Installations 1933–45. Shrewsbury, UK: Airlife, 2003. <a href="/facts/ISBN_(identifier)/15AdSPa9">ISBN</a> 1-84037-227-3.</li>
<li>Willis, David. "Boeing B-29 and B-50 Superfortress". International Air Power Review, Volume 22, 2007, pp. 136–169. Westport, Connecticut: AIRtime Publishing. <a href="/facts/ISSN_(identifier)/DPAflDvU">ISSN</a> <a href="https://www.worldcat.org/search?fq=x0:jrnl&q=n2:1473-9917">1473-9917</a>. <a href="/facts/ISBN_(identifier)/15AdSPa9">ISBN</a> 1-880588-79-X.</li></ul>
<h2 id="further-reading">Further reading</h2>
<ul><li>Anderton, David A. B-29 Superfortress at War. Shepperton, Surrey, UK: Ian Allan Ltd., 1978. <a href="/facts/ISBN_(identifier)/15AdSPa9">ISBN</a> 0-7110-0881-7.</li>
<li>Berger, Carl. B29: The Superfortress. New York: Ballantine Books, 1970. <a href="/facts/ISBN_(identifier)/15AdSPa9">ISBN</a> 0-345-24994-1.</li>
<li><a href="/facts/Steve_Birdsall/72lewyu8">Birdsall, Steve</a>. B-29 Superfortress in Action (Aircraft in Action 31). Carrolton, Texas: Squadron/Signal Publications, Inc., 1977. <a href="/facts/ISBN_(identifier)/15AdSPa9">ISBN</a> 0-89747-030-3.</li>
<li><a href="/facts/Steve_Birdsall/72lewyu8">Birdsall, Steve</a>. Saga of the Superfortress: The Dramatic Story of the B-29 and the Twentieth Air Force. London: Sidgewick & Jackson Limited, 1991. <a href="/facts/ISBN_(identifier)/15AdSPa9">ISBN</a> 0-283-98786-3.</li>
<li><a href="/facts/Steve_Birdsall/72lewyu8">Birdsall, Steve</a>. Superfortress: The Boeing B-29. Carrollton, Texas: Squadron/Signal Publications, Inc., 1980. <a href="/facts/ISBN_(identifier)/15AdSPa9">ISBN</a> 0-89747-104-0.</li>
<li>Chant, Christopher. Superprofile: B-29 Superfortress. Sparkford, Yeovil, Somerset, UK: Haynes Publishing Group, 1983. <a href="/facts/ISBN_(identifier)/15AdSPa9">ISBN</a> 0-85429-339-6.</li>
<li>Davis, Larry. B-29 Superfortress in Action (Aircraft in Action 165). Carrollton, Texas: Squadron/Signal Publications, 1997. <a href="/facts/ISBN_(identifier)/15AdSPa9">ISBN</a> 0-89747-370-1.</li>
<li><a href="/facts/Robert_F._Dorr/RNg7PfHj">Dorr, Robert F</a>. B-29 Superfortress Units in World War Two. Combat Aircraft 33. Botley, Oxford, UK: Osprey Publishing, 2002. <a href="/facts/ISBN_(identifier)/15AdSPa9">ISBN</a> 1-84176-285-7.</li>
<li><a href="/facts/Robert_F._Dorr/RNg7PfHj">Dorr, Robert F</a>. B-29 Superfortress Units of the Korean War. Botley, Oxford, UK: Osprey Publishing, 2003. <a href="/facts/ISBN_(identifier)/15AdSPa9">ISBN</a> 1-84176-654-2.</li>
<li>Fopp, Michael A. The Washington File. Tonbridge, Kent, UK: Air-Britain (Historians) Ltd., 1983. <a href="/facts/ISBN_(identifier)/15AdSPa9">ISBN</a> 0-85130-106-1.</li>
<li>Herbert, Kevin B. Maximum Effort: The B-29s Against Japan. Manhattan, Kansas: Sunflower University Press, 1983. <a href="/facts/ISBN_(identifier)/15AdSPa9">ISBN</a> 978-0-89745-036-2.</li>
<li>Howlett, Chris. "Washington Times". <a href="https://web.archive.org/web/20120704192927/http://www.rafwatton.info/History/TheWashington/tabid/90/Default.aspx">The history of the Washington</a></li>
<li>Johnsen, Frederick A. The B-29 Book. Tacoma, Washington: Bomber Books, 1978. <a href="/facts/ISBN_(identifier)/15AdSPa9">ISBN</a> 1-135-76473-5</li>
<li>Mayborn, Mitch. The Boeing B-29 Superfortress (Aircraft in Profile 101). Windsor, Berkshire, UK: Profile Publications Ltd., 1971 (reprint).</li>
<li>Nijboer, Donald. B-29 Superfortress vs Ki-44 "Tojo": Pacific Theater 1944–45 (Bloomsbury Publishing, 2017).</li>
<li>Nijboer, Donald, and Steve Pace. B-29 Combat Missions: First-hand Accounts of Superfortress Operations Over the Pacific and Korea (Metro Books, 2011).</li>
<li>Pimlott, John. B-29 Superfortress. London: Bison Books Ltd., 1980. <a href="/facts/ISBN_(identifier)/15AdSPa9">ISBN</a> 0-89009-319-9.</li>
<li>Rigmant, Vladimir. B-29, Tу-4 – стратегические близнецы – как это было (Авиация и космонавтика 17 [Крылья 4]) (in Russian). Moscow: 1996.</li>
<li>Toh, Boon Kwan. "Black and Silver: Perceptions and Memories of the B-29 Bomber, American Strategic Bombing and the Longest Bombing Missions of the Second World War on Singapore" <a href="/facts/War_%2526_Society/R47MLxrr">War & Society</a> 39#2 (2020) pp. 109–125</li>
<li>Wheeler, Keith. Bombers over Japan. Virginia Beach, Virginia: Time-Life Books, 1982. <a href="/facts/ISBN_(identifier)/15AdSPa9">ISBN</a> 0-8094-3429-6.</li>
<li>Wolf, William. Boeing B-29 Superfortress: The Ultimate Look. Atglen, Pennsylvania: Schiffer Publishing, 2005. <a href="/facts/ISBN_(identifier)/15AdSPa9">ISBN</a> 0-7643-2257-5.</li></ul>
<h2 id="external-links">External links</h2>

Wikimedia Commons has media related to Boeing B-29 Superfortress.

<ul><li><a href="https://archive.org/details/B-29CombatCrewManual">B-29 Combat Crew Manual</a></li>
<li><a href="https://books.google.com/books?id=PN8DAAAAMBAJ&pg=PA8">"Meet the B-29"</a>, <a href="/facts/Popular_Science/dE4EBW22">Popular Science</a>, August 1944—the first large and detailed public article printed on the B-29 in the US</li>
<li><a href="http://www.avweb.com/news/pelican/182150-1.html">Pelican's Perch #56:Superfortress!</a> <a href="https://web.archive.org/web/20070828133236/http://www.avweb.com/news/pelican/182150-1.html">Archived</a> 28 August 2007 at the <a href="/facts/Wayback_Machine/nmQ3a6JC">Wayback Machine</a>, Article wrote by John Deakin, one of the pilots who regularly fly the world's first restored-to-flight B-29</li>
<li><a href="http://www.warbirdregistry.org/b29registry/b29registry.html">WarbirdsRegistry.org B-29/B-50</a>, Listing of surviving B-29s</li>
<li><a href="http://imperialclub.com/Yr/1945/47Planes/Cover.htm">"Great Engines and Great Planes", 1947 – 130 page book about the rapid design, testing, and production of the B-29 powerplant by Chrysler Corporation in World War II</a> <a href="https://web.archive.org/web/20110713021525/http://imperialclub.com/Yr/1945/47Planes/Cover.htm">Archived</a> 13 July 2011 at the <a href="/facts/Wayback_Machine/nmQ3a6JC">Wayback Machine</a></li>
<li><a href="https://www.youtube.com/watch?v=mtpHQ6FZ9sY">B-29 Flight Procedure and Combat Crew Functioning – 1944 US Army Air Forces Training Film</a> on <a href="/facts/YouTube_video_(identifier)/db276jst">YouTube</a></li>
<li><a href="https://digitalcollections.museumofflight.org/items/show/46314">XB-29 Handbook</a> at The Museum of Flight Digital Collections</li>
<li><a href="https://www.youtube.com/watch?v=QKRszjV07ZQ">The B-29 Turret System: An Expensive, Effective Mechanical Masterpiece</a> good video explaining the fire control computer</li></ul>

<h2 id="references">References</h2>

<ol>
<li id="fn:1">1634–1699: McCusker, J. J. (1997). How Much Is That in Real Money? A Historical Price Index for Use as a Deflator of Money Values in the Economy of the United States: Addenda et Corrigenda (PDF). American Antiquarian Society. 1700–1799: McCusker, J. J. (1992). How Much Is That in Real Money? A Historical Price Index for Use as a Deflator of Money Values in the Economy of the United States (PDF). American Antiquarian Society. 1800–present: Federal Reserve Bank of Minneapolis. "Consumer Price Index (estimate) 1800–". Retrieved 29 February 2024. <a href="/wiki/John_J._McCusker" target="_blank">/wiki/John_J._McCusker</a> <a href="#fnref:1" class="footnote-back-ref">↩</a></li>
<li id="fn:2">Bowers 1989, p. 318. <a href="#fnref:2" class="footnote-back-ref">↩</a></li>
<li id="fn:3">Willis 2007, pp. 136–137. <a href="#fnref:3" class="footnote-back-ref">↩</a></li>
<li id="fn:4">Cate 1953, pp. 6–8. - Cate, James Lea (1953). Craven, Wesley Frank; Cate, James Lea (eds.). The Pacific: Matterhorn to Nagasaki June 1944 to August 1945 (PDF). The Army Air Forces in World War II. Volume 5. Chicago and London: The University of Chicago Press. OCLC 9828710 – via Hyperwar Foundation. <a href="https://media.defense.gov/2010/Nov/05/2001329890/-1/-1/0/AFD-101105-012.pdf" target="_blank">https://media.defense.gov/2010/Nov/05/2001329890/-1/-1/0/AFD-101105-012.pdf</a> <a href="#fnref:4" class="footnote-back-ref">↩</a></li>
<li id="fn:5">Bowers 1989, p. 319. <a href="#fnref:5" class="footnote-back-ref">↩</a></li>
<li id="fn:6">Wegg 1990, p. 91. <a href="#fnref:6" class="footnote-back-ref">↩</a></li>
<li id="fn:7">"Factsheet: Lockheed XB-30." Archived 16 July 2011 at the Wayback Machine National Museum of the United States Air Force. Retrieved: 15 November 2010. <a href="http://www.nationalmuseum.af.mil/factsheets/factsheet.asp?id=2578" target="_blank">http://www.nationalmuseum.af.mil/factsheets/factsheet.asp?id=2578</a> <a href="#fnref:7" class="footnote-back-ref">↩</a></li>
<li id="fn:8">Francillon 1979, p. 713. <a href="#fnref:8" class="footnote-back-ref">↩</a></li>
<li id="fn:9">Willis 2007, p. 138. <a href="#fnref:9" class="footnote-back-ref">↩</a></li>
<li id="fn:10">Cate 1953, pp. 6–8. - Cate, James Lea (1953). Craven, Wesley Frank; Cate, James Lea (eds.). The Pacific: Matterhorn to Nagasaki June 1944 to August 1945 (PDF). The Army Air Forces in World War II. Volume 5. Chicago and London: The University of Chicago Press. OCLC 9828710 – via Hyperwar Foundation. <a href="https://media.defense.gov/2010/Nov/05/2001329890/-1/-1/0/AFD-101105-012.pdf" target="_blank">https://media.defense.gov/2010/Nov/05/2001329890/-1/-1/0/AFD-101105-012.pdf</a> <a href="#fnref:10" class="footnote-back-ref">↩</a></li>
<li id="fn:11">"Superfortress". The Mirror. Vol. 22, no. 1139. Western Australia. 11 March 1944. p. 8. Retrieved 24 August 2023 – via National Library of Australia. <a href="http://nla.gov.au/nla.news-article75932318" target="_blank">http://nla.gov.au/nla.news-article75932318</a> <a href="#fnref:11" class="footnote-back-ref">↩</a></li>
<li id="fn:12">Cate 1953, pp. 6–8. - Cate, James Lea (1953). Craven, Wesley Frank; Cate, James Lea (eds.). The Pacific: Matterhorn to Nagasaki June 1944 to August 1945 (PDF). The Army Air Forces in World War II. Volume 5. Chicago and London: The University of Chicago Press. OCLC 9828710 – via Hyperwar Foundation. <a href="https://media.defense.gov/2010/Nov/05/2001329890/-1/-1/0/AFD-101105-012.pdf" target="_blank">https://media.defense.gov/2010/Nov/05/2001329890/-1/-1/0/AFD-101105-012.pdf</a> <a href="#fnref:12" class="footnote-back-ref">↩</a></li>
<li id="fn:13">Knaack 1988, p. 480. <a href="#fnref:13" class="footnote-back-ref">↩</a></li>
<li id="fn:14">Bowers 1989, p. 319. <a href="#fnref:14" class="footnote-back-ref">↩</a></li>
<li id="fn:15">Bowers 1989, p. 319. <a href="#fnref:15" class="footnote-back-ref">↩</a></li>
<li id="fn:16">Bowers 1989, p. 322. <a href="#fnref:16" class="footnote-back-ref">↩</a></li>
<li id="fn:17">Willis 2007, pp. 138–139. <a href="#fnref:17" class="footnote-back-ref">↩</a></li>
<li id="fn:18">Bowers 1989, p. 322. <a href="#fnref:18" class="footnote-back-ref">↩</a></li>
<li id="fn:19">Brown 1977, p. 80. <a href="#fnref:19" class="footnote-back-ref">↩</a></li>
<li id="fn:20">Peacock Air International August 1989, pp. 70–71. <a href="#fnref:20" class="footnote-back-ref">↩</a></li>
<li id="fn:21">Peacock Air International August 1989, pp. 70–71. <a href="#fnref:21" class="footnote-back-ref">↩</a></li>
<li id="fn:22">Banel, Feliks (15 February 2013). "70 Years Ago: Remembering The Crash of Boeing's Superfortress". KUOW-FM. Retrieved 2 July 2017. <a href="http://kuow.org/post/70-years-ago-remembering-crash-boeing-s-superfortress" target="_blank">http://kuow.org/post/70-years-ago-remembering-crash-boeing-s-superfortress</a> <a href="#fnref:22" class="footnote-back-ref">↩</a></li>
<li id="fn:23">Willis 2007, p. 144. <a href="#fnref:23" class="footnote-back-ref">↩</a></li>
<li id="fn:24">Peacock Air International August 1989, p. 76. <a href="#fnref:24" class="footnote-back-ref">↩</a></li>
<li id="fn:25">Knaack 1988, p. 484. <a href="#fnref:25" class="footnote-back-ref">↩</a></li>
<li id="fn:26">Bowers 1989, p. 323. <a href="#fnref:26" class="footnote-back-ref">↩</a></li>
<li id="fn:27">Herman 2012, pp. 284–346. <a href="#fnref:27" class="footnote-back-ref">↩</a></li>
<li id="fn:28">Knaack 1988, p. 484. <a href="#fnref:28" class="footnote-back-ref">↩</a></li>
<li id="fn:29">As efforts were made to eradicate the problems a succession of engine models were fitted to B-29s. B-29 production started with the −23, which were all modified to the "war engine" −23A. Other versions were −41 (B-29A), −57, −59.[citation needed]
 <a href="/wiki/Wikipedia:Citation_needed" target="_blank">/wiki/Wikipedia:Citation_needed</a> <a href="#fnref:29" class="footnote-back-ref">↩</a></li>
<li id="fn:30">Knaack 1988, p. 484. <a href="#fnref:30" class="footnote-back-ref">↩</a></li>
<li id="fn:31">Gardner, Fred Carl "A Year in the B-29 Superfortress." Fred Carl Gardner's website, updated 1 May 2005. Retrieved: 11 April 2009. <a href="http://www.oregoncounsel.com/FAAACE/Superfortress.html" target="_blank">http://www.oregoncounsel.com/FAAACE/Superfortress.html</a> <a href="#fnref:31" class="footnote-back-ref">↩</a></li>
<li id="fn:32">Gardner, Fred Carl "A Year in the B-29 Superfortress." Fred Carl Gardner's website, updated 1 May 2005. Retrieved: 11 April 2009. <a href="http://www.oregoncounsel.com/FAAACE/Superfortress.html" target="_blank">http://www.oregoncounsel.com/FAAACE/Superfortress.html</a> <a href="#fnref:32" class="footnote-back-ref">↩</a></li>
<li id="fn:33">1634–1699: McCusker, J. J. (1997). How Much Is That in Real Money? A Historical Price Index for Use as a Deflator of Money Values in the Economy of the United States: Addenda et Corrigenda (PDF). American Antiquarian Society. 1700–1799: McCusker, J. J. (1992). How Much Is That in Real Money? A Historical Price Index for Use as a Deflator of Money Values in the Economy of the United States (PDF). American Antiquarian Society. 1800–present: Federal Reserve Bank of Minneapolis. "Consumer Price Index (estimate) 1800–". Retrieved 29 February 2024. <a href="/wiki/John_J._McCusker" target="_blank">/wiki/John_J._McCusker</a> <a href="#fnref:33" class="footnote-back-ref">↩</a></li>
<li id="fn:34">O'Brien, Phillips Payson (2015). How the War Was Won (1st ed.). Cambridge University Press. pp. 47–48. ISBN 978-1-107-01475-6. <a href="978-1-107-01475-6" target="_blank">978-1-107-01475-6</a> <a href="#fnref:34" class="footnote-back-ref">↩</a></li>
<li id="fn:35">"B-29 Superfortress, U.S. Heavy Bomber". The Pacific War Online Encyclopedia. Kent G. Budge. Retrieved 1 April 2018. <a href="http://www.pwencycl.kgbudge.com/B/-/B-29_Superfortress.htm" target="_blank">http://www.pwencycl.kgbudge.com/B/-/B-29_Superfortress.htm</a> <a href="#fnref:35" class="footnote-back-ref">↩</a></li>
<li id="fn:36">Knaack 1988, p. 486. <a href="#fnref:36" class="footnote-back-ref">↩</a></li>
<li id="fn:37">"Cost of B-29 Bomber Reduced Four-Fifths". The San Bernardino Daily Sun. Vol. 51. San Bernardino, California. Associated Press. 15 October 1944. p. 2. <a href="#fnref:37" class="footnote-back-ref">↩</a></li>
<li id="fn:38">"B-29 Superfortress." Boeing. Retrieved: 22 March 2012. <a href="http://www.boeing.com/history/boeing/b29.html" target="_blank">http://www.boeing.com/history/boeing/b29.html</a> <a href="#fnref:38" class="footnote-back-ref">↩</a></li>
<li id="fn:39">The forward upper turret's armament was later doubled to four .50 Brownings. <a href="#fnref:39" class="footnote-back-ref">↩</a></li>
<li id="fn:40">The nose sighting station was operated by the bombardier <a href="/wiki/Bombardier_(air_force)" target="_blank">/wiki/Bombardier_(air_force)</a> <a href="#fnref:40" class="footnote-back-ref">↩</a></li>
<li id="fn:41">Brown 1977, pp. 80–83. <a href="#fnref:41" class="footnote-back-ref">↩</a></li>
<li id="fn:42">Williams and Gustin 2003, pp. 164–166. <a href="#fnref:42" class="footnote-back-ref">↩</a></li>
<li id="fn:43">Hearst Magazines (February 1945). "B-29 Gunnery Brain Aims Six Guns at Once". Popular Mechanics. Hearst Magazines. p. 26. <a href="https://books.google.com/books?id=h98DAAAAMBAJ&pg=PA26" target="_blank">https://books.google.com/books?id=h98DAAAAMBAJ&pg=PA26</a> <a href="#fnref:43" class="footnote-back-ref">↩</a></li>
<li id="fn:44">""Central station fire control and the B-29 remote control turret system." twinbeech.com, 23 February 2011. Retrieved: 30 May 2015. <a href="http://www.twinbeech.com/CFCsystem.htm" target="_blank">http://www.twinbeech.com/CFCsystem.htm</a> <a href="#fnref:44" class="footnote-back-ref">↩</a></li>
<li id="fn:45">Willis 2007, p. 140. <a href="#fnref:45" class="footnote-back-ref">↩</a></li>
<li id="fn:46">Pace 2003, p. 53. <a href="#fnref:46" class="footnote-back-ref">↩</a></li>
<li id="fn:47">Herman 2012, p. 327. <a href="#fnref:47" class="footnote-back-ref">↩</a></li>
<li id="fn:48">Willis 2007, pp. 140, 144. <a href="#fnref:48" class="footnote-back-ref">↩</a></li>
<li id="fn:49">"History of 315 BW." 315bw.org. Retrieved: 19 June 2008. <a href="http://www.315bw.org/" target="_blank">http://www.315bw.org/</a> <a href="#fnref:49" class="footnote-back-ref">↩</a></li>
<li id="fn:50">Boeing had previously built the 307 Stratoliner, which was the first commercial airliner with a fully pressurized cabin. Only 10 of these aircraft were built. While other aircraft such as the Ju 86P were pressurized, the B-29 was designed from the outset with a pressurized system.[citation needed]
 <a href="/wiki/Boeing_307_Stratoliner" target="_blank">/wiki/Boeing_307_Stratoliner</a> <a href="#fnref:50" class="footnote-back-ref">↩</a></li>
<li id="fn:51">Mann 2009, p. 103. <a href="#fnref:51" class="footnote-back-ref">↩</a></li>
<li id="fn:52">Craven and Cate Vol. 1 1983, pp. 145–149. <a href="#fnref:52" class="footnote-back-ref">↩</a></li>
<li id="fn:53">Craven and Cate Vol. 2 1983, p. 6. <a href="#fnref:53" class="footnote-back-ref">↩</a></li>
<li id="fn:54">Craven and Cate Vol. 5 1983, pp. 11–12. <a href="#fnref:54" class="footnote-back-ref">↩</a></li>
<li id="fn:55">Willis 2007, pp. 144–145. <a href="#fnref:55" class="footnote-back-ref">↩</a></li>
<li id="fn:56">Craven and Cate Vol. 5 1983, pp. 18–22. <a href="#fnref:56" class="footnote-back-ref">↩</a></li>
<li id="fn:57">Willis 2007, pp. 144–145. <a href="#fnref:57" class="footnote-back-ref">↩</a></li>
<li id="fn:58">Peacock Air International August 1989, p. 87. <a href="#fnref:58" class="footnote-back-ref">↩</a></li>
<li id="fn:59">Stearn, Duncan. "The air war over Thailand, 1941–1945; Part Two, The Allies attack Thailand, 1942–1945". Pattaya Mail. Volume XI, Issue 21, 30 May – 5 June 2003. Retrieved 18 February 2012. <a href="http://www.pattayamail.com/513/columns.shtml#hd6" target="_blank">http://www.pattayamail.com/513/columns.shtml#hd6</a> <a href="#fnref:59" class="footnote-back-ref">↩</a></li>
<li id="fn:60">Craven and Cate Vol. 5 1983, p. 100. <a href="#fnref:60" class="footnote-back-ref">↩</a></li>
<li id="fn:61">Craven and Cate Vol. 5 1983, p. 101. <a href="#fnref:61" class="footnote-back-ref">↩</a></li>
<li id="fn:62">The suffix −1-BW indicates that this B-29 was from the first production batch of B-29s manufactured at the Boeing, Wichita plant. Other suffixes are BA = Bell, Atlanta; BN = Boeing, Renton, Washington; MO = Martin, Omaha, Nebraska.[47] <a href="/wiki/Atlanta,_Georgia" target="_blank">/wiki/Atlanta,_Georgia</a> <a href="#fnref:62" class="footnote-back-ref">↩</a></li>
<li id="fn:63">Source: 20th Bomb Group Assn <a href="#fnref:63" class="footnote-back-ref">↩</a></li>
<li id="fn:64">Willis 2007, p. 145. <a href="#fnref:64" class="footnote-back-ref">↩</a></li>
<li id="fn:65">Craven and Cate Vol. 5 1983, pp. 101, 103. <a href="#fnref:65" class="footnote-back-ref">↩</a></li>
<li id="fn:66">The tactic of using aircraft to ram American B-29s was first recorded on the raid of 20 August 1944 on the steel factories at Yawata. Sergeant Shigeo Nobe of the 4th Sentai intentionally flew his Kawasaki Ki-45 into a B-29. Debris from the explosion severely damaged another B-29, which also went down. Lost were Colonel Robert Clinksale's B-29-10-BW 42-6334 Gertrude C and Captain Ornell Stauffer's B-29-15-BW 42-6368 Calamity Sue, both from the 486th BG. See: "Pacific War Chronology: August 1944". att.net. Retrieved: 12 June 2008. Archived 2 April 2010 at the Wayback Machine. Several B-29s were destroyed in this manner in the ensuing months. Although the term "Kamikaze" is often used to refer to the pilots conducting these attacks, the word was not used by the Japanese military. See: "Japanese website dedicated to the Tokkotai JAAF and JNAF". tokkotai.or.jp. Retrieved 7 June 2008. <a href="/wiki/Kawasaki_Ki-45" target="_blank">/wiki/Kawasaki_Ki-45</a> <a href="#fnref:66" class="footnote-back-ref">↩</a></li>
<li id="fn:67">The biggest raid on Bangkok during the war occurred on 2 November 1944, when the marshaling yards at Bang Sue were raided by 55 B-29s ...[52] <a href="#fnref:67" class="footnote-back-ref">↩</a></li>
<li id="fn:68">Stearn, Duncan. "The air war over Thailand, 1941–1945; Part Two, The Allies attack Thailand, 1942–1945". Pattaya Mail. Volume XI, Issue 21, 30 May – 5 June 2003. Retrieved 18 February 2012. <a href="http://www.pattayamail.com/513/columns.shtml#hd6" target="_blank">http://www.pattayamail.com/513/columns.shtml#hd6</a> <a href="#fnref:68" class="footnote-back-ref">↩</a></li>
<li id="fn:69">Willis 2007, pp. 145–146. <a href="#fnref:69" class="footnote-back-ref">↩</a></li>
<li id="fn:70">Willis 2007, p. 146. <a href="#fnref:70" class="footnote-back-ref">↩</a></li>
<li id="fn:71">Dear and Foot 1995, p. 718. <a href="#fnref:71" class="footnote-back-ref">↩</a></li>
<li id="fn:72">Willis 2007, p. 146. <a href="#fnref:72" class="footnote-back-ref">↩</a></li>
<li id="fn:73">Peacock Air International August 1989, p. 87. <a href="#fnref:73" class="footnote-back-ref">↩</a></li>
<li id="fn:74">Laurence M. Vance (14 August 2009). "Bombings Worse than Nagasaki and Hiroshima". The Future of Freedom Foundation. Retrieved 8 August 2011. <a href="http://fff.org/explore-freedom/article/bombings-worse-nagasaki-hiroshima/" target="_blank">http://fff.org/explore-freedom/article/bombings-worse-nagasaki-hiroshima/</a> <a href="#fnref:74" class="footnote-back-ref">↩</a></li>
<li id="fn:75">"Project Silverplate". Atomic Heritage Foundation. <a href="https://www.atomicheritage.org/history/project-silverplate" target="_blank">https://www.atomicheritage.org/history/project-silverplate</a> <a href="#fnref:75" class="footnote-back-ref">↩</a></li>
<li id="fn:76">Groves, Leslie (1962). Now it Can be Told: The Story of the Manhattan Project. New York: Harper & Row. pp. 254–255. ISBN 0-306-70738-1. OCLC 537684. {{cite book}}: ISBN / Date incompatibility (help) <a href="0-306-70738-1" target="_blank">0-306-70738-1</a> <a href="#fnref:76" class="footnote-back-ref">↩</a></li>
<li id="fn:77">"Black Lancasters: The story of heavy British bomber and first atomic bombs". 22 February 2023. <a href="https://interestingengineering.com/innovation/first-atomic-bombs-black-lancasters" target="_blank">https://interestingengineering.com/innovation/first-atomic-bombs-black-lancasters</a> <a href="#fnref:77" class="footnote-back-ref">↩</a></li>
<li id="fn:78">McKinstry, Leo "LANCASTER: The Second World War's Greatest Bomber", John Murray Publishers 2009, page 495 <a href="#fnref:78" class="footnote-back-ref">↩</a></li>
<li id="fn:79">Commager, Henry Steele; Miller, Donald L. (2010). The Story of World War II: Revised, expanded, and updated. Simon and Schuster. p. 637. ISBN 978-1-4391-2822-0. But Sweeney muscled the plane under control with the help of its specially installed reversible propellers. <a href="978-1-4391-2822-0" target="_blank">978-1-4391-2822-0</a> <a href="#fnref:79" class="footnote-back-ref">↩</a></li>
<li id="fn:80">"Manhattan Project: The Atomic Bombing of Hiroshima, Japan, August 6, 1945". OSTI.GOV. 1945. Archived from the original on 26 March 2021. Retrieved 23 November 2021. <a href="https://web.archive.org/web/20210326051651/https://www.osti.gov/opennet/manhattan-project-history/Events/1945/hiroshima.htm" target="_blank">https://web.archive.org/web/20210326051651/https://www.osti.gov/opennet/manhattan-project-history/Events/1945/hiroshima.htm</a> <a href="#fnref:80" class="footnote-back-ref">↩</a></li>
<li id="fn:81">"Pilot on Nagasaki Atomic Bomb Mission Dies at 84". The New York Times. 18 July 2004. Archived from the original on 14 March 2021. Retrieved 23 November 2021. <a href="https://web.archive.org/web/20210314192403/https://www.nytimes.com/2004/07/18/national/pilot-on-nagasaki-atomic-bomb-mission-dies-at-84.html" target="_blank">https://web.archive.org/web/20210314192403/https://www.nytimes.com/2004/07/18/national/pilot-on-nagasaki-atomic-bomb-mission-dies-at-84.html</a> <a href="#fnref:81" class="footnote-back-ref">↩</a></li>
<li id="fn:82">"Boeing B-29 Superfortress". National Museum of the United States Air Force. 9 August 1945. Archived from the original on 3 June 2021. Retrieved 23 November 2021. <a href="https://web.archive.org/web/20210603140406/https://www.nationalmuseum.af.mil/Visit/Museum-Exhibits/Fact-Sheets/Display/Article/196252/boeing-b-29-superfortress/" target="_blank">https://web.archive.org/web/20210603140406/https://www.nationalmuseum.af.mil/Visit/Museum-Exhibits/Fact-Sheets/Display/Article/196252/boeing-b-29-superfortress/</a> <a href="#fnref:82" class="footnote-back-ref">↩</a></li>
<li id="fn:83">"The straight line distance between Chitose Japanese Air Self Defense Force and Chicago, Chicago Midway Airport is approximately 5,839 miles or 9,397 kilometres."[65] <a href="#fnref:83" class="footnote-back-ref">↩</a></li>
<li id="fn:84">Potts, J. Ivan, Jr. "Chapter: The Japan to Washington Flight." Archived 17 February 2012 at the Wayback Machine Remembrance of War: The Experiences of a B-29 Pilot in World War II. Shelbyville, Tennessee: J.I. Potts & Associates, 1995. Retrieved: 8 June 2009. <a href="http://www.40thbombgroup.org/DCFlight.pdf" target="_blank">http://www.40thbombgroup.org/DCFlight.pdf</a> <a href="#fnref:84" class="footnote-back-ref">↩</a></li>
<li id="fn:85">"Monday, January 01, 1940 – Saturday, December 31, 1949." Archived 20 October 2012 at the Wayback Machine History Milestones (US Air Force). Retrieved: 21 October 2010. <a href="http://www.af.mil/information/heritage/milestones.asp?dec=1940&sd=01/01/1940&ed=12/31/1949" target="_blank">http://www.af.mil/information/heritage/milestones.asp?dec=1940&sd=01/01/1940&ed=12/31/1949</a> <a href="#fnref:85" class="footnote-back-ref">↩</a></li>
<li id="fn:86">Mayo, Weyland. "B-29s Set Speed, Altitude, Distance Records." b-29s-over-korea.com. Retrieved: 21 October 2010. <a href="http://b-29s-over-korea.com/B-29s-SetRecords/B-29s-SetRecords.html" target="_blank">http://b-29s-over-korea.com/B-29s-SetRecords/B-29s-SetRecords.html</a> <a href="#fnref:86" class="footnote-back-ref">↩</a></li>
<li id="fn:87">Bonnier Corporation (December 1946). "Inside The Dreamboat". Popular Science. Bonnier Corporation. p. 91. <a href="https://books.google.com/books?id=NSEDAAAAMBAJ&pg=PA91" target="_blank">https://books.google.com/books?id=NSEDAAAAMBAJ&pg=PA91</a> <a href="#fnref:87" class="footnote-back-ref">↩</a></li>
<li id="fn:88">"B-29 Superfortress visit to Glatton". 29 May 2019. <a href="https://457thbombgroupassoc.org/b-29-superfortress-visit-to-glatton/" target="_blank">https://457thbombgroupassoc.org/b-29-superfortress-visit-to-glatton/</a> <a href="#fnref:88" class="footnote-back-ref">↩</a></li>
<li id="fn:89">"Der Sternenbanner_1 (Photo 1)". 384thbombgroup.com. <a href="https://384thbombgroup.com/WinJack3/wwII-sternenbanner_1.html" target="_blank">https://384thbombgroup.com/WinJack3/wwII-sternenbanner_1.html</a> <a href="#fnref:89" class="footnote-back-ref">↩</a></li>
<li id="fn:90">Bowers 1989, p. 323. <a href="#fnref:90" class="footnote-back-ref">↩</a></li>
<li id="fn:91">Wynn, Humphrey. "The Bomber Role 1945-1970". Air Historical Branch, UK Ministry of Defence. pp. 3–5. Retrieved 31 October 2023. <a href="https://www.raf.mod.uk/our-organisation/units/air-historical-branch/regional-studies-post-coldwar-narratives/the-bomber-role-1945-1970/" target="_blank">https://www.raf.mod.uk/our-organisation/units/air-historical-branch/regional-studies-post-coldwar-narratives/the-bomber-role-1945-1970/</a> <a href="#fnref:91" class="footnote-back-ref">↩</a></li>
<li id="fn:92">"Agenda for Seventh NATO C–E Board Meeting". NATO. 17 March 1959. pp. 4–5. <a href="https://archives.nato.int/agenda-for-seventh-nato-c-e-board-meeting" target="_blank">https://archives.nato.int/agenda-for-seventh-nato-c-e-board-meeting</a> <a href="#fnref:92" class="footnote-back-ref">↩</a></li>
<li id="fn:93">Wilson, Stewart (1994). Military Aircraft of Australia. Weston Creek, Australia: Aerospace Publications. p. 216. ISBN 978-1875671083. <a href="978-1875671083" target="_blank">978-1875671083</a> <a href="#fnref:93" class="footnote-back-ref">↩</a></li>
<li id="fn:94">Wilson, Stewart (1994). Military Aircraft of Australia. Weston Creek, Australia: Aerospace Publications. p. 216. ISBN 978-1875671083. <a href="978-1875671083" target="_blank">978-1875671083</a> <a href="#fnref:94" class="footnote-back-ref">↩</a></li>
<li id="fn:95">"A76: Boeing Washington." RAAF Museum. Retrieved: 28 January 2012. <a href="http://www.airforce.gov.au/raafmuseum/research/aircraft/series2/A76.htm" target="_blank">http://www.airforce.gov.au/raafmuseum/research/aircraft/series2/A76.htm</a> <a href="#fnref:95" class="footnote-back-ref">↩</a></li>
<li id="fn:96">"Tu-4 "Bull" and Ramp Tramp." Archived 18 February 2009 at the Wayback Machine Monino Aviation. Retrieved: 1 November 2009. <a href="http://www.moninoaviation.com/40a.html" target="_blank">http://www.moninoaviation.com/40a.html</a> <a href="#fnref:96" class="footnote-back-ref">↩</a></li>
<li id="fn:97">The drag of the windmilling propeller critically reduced the range of the B-29. Because of this "Ramp Tramp" was unable to reach home base at Chengdu, China, and the pilot opted to head for Vladivostok.[citation needed]
 <a href="/wiki/Chengdu" target="_blank">/wiki/Chengdu</a> <a href="#fnref:97" class="footnote-back-ref">↩</a></li>
<li id="fn:98">"Tu-4 "Bull" and Ramp Tramp." Archived 18 February 2009 at the Wayback Machine Monino Aviation. Retrieved: 1 November 2009. <a href="http://www.moninoaviation.com/40a.html" target="_blank">http://www.moninoaviation.com/40a.html</a> <a href="#fnref:98" class="footnote-back-ref">↩</a></li>
<li id="fn:99">Lednicer, David. "Intrusions, Overflights, Shootdowns and Defections During the Cold War and Thereafter". David Lednicer, 16 April 2011. Retrieved: 31 July 2011. <a href="http://mysite.ncnetwork.net/res12e522/ColdWar.html" target="_blank">http://mysite.ncnetwork.net/res12e522/ColdWar.html</a> <a href="#fnref:99" class="footnote-back-ref">↩</a></li>
<li id="fn:100">Hardesty, Von (March 2001). "Made in the U.S.S.R." Smithsonian. Retrieved 8 December 2024. <a href="https://www.smithsonianmag.com/air-space-magazine/made-in-the-ussr-38442437/" target="_blank">https://www.smithsonianmag.com/air-space-magazine/made-in-the-ussr-38442437/</a> <a href="#fnref:100" class="footnote-back-ref">↩</a></li>
<li id="fn:101">Lednicer, David. "Intrusions, Overflights, Shootdowns and Defections During the Cold War and Thereafter". David Lednicer, 16 April 2011. Retrieved: 31 July 2011. <a href="http://mysite.ncnetwork.net/res12e522/ColdWar.html" target="_blank">http://mysite.ncnetwork.net/res12e522/ColdWar.html</a> <a href="#fnref:101" class="footnote-back-ref">↩</a></li>
<li id="fn:102">Ramp Tramp was also used during 1948–49 as a drop ship for underwing launching of 346P glider. The 346P was a development of the German DFS 346 rocket-powered aircraft. The complete wing and engines of Cait Paomat were later incorporated into the sole Tupolev Tu-70 transport aircraft.[citation needed]
 <a href="/wiki/DFS_346" target="_blank">/wiki/DFS_346</a> <a href="#fnref:102" class="footnote-back-ref">↩</a></li>
<li id="fn:103">"Tu-4 "Bull" and Ramp Tramp." Archived 18 February 2009 at the Wayback Machine Monino Aviation. Retrieved: 1 November 2009. <a href="http://www.moninoaviation.com/40a.html" target="_blank">http://www.moninoaviation.com/40a.html</a> <a href="#fnref:103" class="footnote-back-ref">↩</a></li>
<li id="fn:104">"Russian B-29 Clone – The TU-4 Story". Archived from the original on 9 August 2008. Retrieved 2 November 2004. B-29.net. Retrieved: 20 July 2011. <a href="https://web.archive.org/web/20080809222956/http://www.rb-29.net/HTML/03RelatedStories/03.03shortstories/03.03.10contss.htm" target="_blank">https://web.archive.org/web/20080809222956/http://www.rb-29.net/HTML/03RelatedStories/03.03shortstories/03.03.10contss.htm</a> <a href="#fnref:104" class="footnote-back-ref">↩</a></li>
<li id="fn:105">The Soviets interned another B-29 when, on 29 August 1945, a Soviet Air Force Yak-9 damaged a B-29 dropping supplies to a POW camp in Korea, and forced it to land at Konan (now Hŭngnam), North Korea. The 13-man crew of the B-29 was not injured in the attack and was released after being interned for 13 days.[80] <a href="/wiki/H%C5%ADngnam" target="_blank">/wiki/H%C5%ADngnam</a> <a href="#fnref:105" class="footnote-back-ref">↩</a></li>
<li id="fn:106">Peacock Air International September 1989, p. 141. <a href="#fnref:106" class="footnote-back-ref">↩</a></li>
<li id="fn:107">"Boeing B-29." Boeing. Retrieved: 5 August 2010. <a href="http://www.boeing.com/history/products/b-29-superfortress.page" target="_blank">http://www.boeing.com/history/products/b-29-superfortress.page</a> <a href="#fnref:107" class="footnote-back-ref">↩</a></li>
<li id="fn:108">Peacock Air International September 1989, p. 141. <a href="#fnref:108" class="footnote-back-ref">↩</a></li>
<li id="fn:109">"VB-3 Razon Bomb". National Museum of the United States Air Force.[dead link] <a href="https://www.nationalmuseum.af.mil/Visit/Museum-Exhibits/Fact-Sheets/Display/Article/196093/vb-3-razon-bomb/https://www.nationalmuseum.af.mil/Visit/Museum-Exhibits/Fact-Sheets/Display/Article/196093/vb-3-razon-bomb/" target="_blank">https://www.nationalmuseum.af.mil/Visit/Museum-Exhibits/Fact-Sheets/Display/Article/196093/vb-3-razon-bomb/https://www.nationalmuseum.af.mil/Visit/Museum-Exhibits/Fact-Sheets/Display/Article/196093/vb-3-razon-bomb/</a> <a href="#fnref:109" class="footnote-back-ref">↩</a></li>
<li id="fn:110">"VB-13 Tarzon Bomb". National Museum of the United States Air Force.[dead link] <a href="https://www.nationalmuseum.af.mil/Visit/Museum-Exhibits/Fact-Sheets/Display/Article/196092/vb-13-tarzon-bomb/https://www.nationalmuseum.af.mil/Visit/Museum-Exhibits/Fact-Sheets/Display/Article/196092/vb-13-tarzon-bomb/" target="_blank">https://www.nationalmuseum.af.mil/Visit/Museum-Exhibits/Fact-Sheets/Display/Article/196092/vb-13-tarzon-bomb/https://www.nationalmuseum.af.mil/Visit/Museum-Exhibits/Fact-Sheets/Display/Article/196092/vb-13-tarzon-bomb/</a> <a href="#fnref:110" class="footnote-back-ref">↩</a></li>
<li id="fn:111">United States Air Force operations in the Korean conflict, 1 July 1952 – 27 July 1953. Maxwell Air Force Base, Alabama: USAF Historical Division, 1956, p. 62. <a href="#fnref:111" class="footnote-back-ref">↩</a></li>
<li id="fn:112">Futrell et al. 1976. <a href="#fnref:112" class="footnote-back-ref">↩</a></li>
<li id="fn:113">"USAF Losses in Korea". www.alternatewars.com. <a href="https://www.alternatewars.com/BBOW/Stats/USAF_Losses_Korea.htm" target="_blank">https://www.alternatewars.com/BBOW/Stats/USAF_Losses_Korea.htm</a> <a href="#fnref:113" class="footnote-back-ref">↩</a></li>
<li id="fn:114">"The Pains of the Post-War V-VS and the Birth of the Soviet Jet Flight". Korean War Database. Archived from the original on 4 June 2013. Retrieved 3 May 2020. <a href="https://web.archive.org/web/20130604071241/http://www.acig.org/artman/publish/article_315.shtml" target="_blank">https://web.archive.org/web/20130604071241/http://www.acig.org/artman/publish/article_315.shtml</a> <a href="#fnref:114" class="footnote-back-ref">↩</a></li>
<li id="fn:115">Shinabery, Michael. "Whoosh failures were 'instructive'." Archived 17 May 2014 at the Wayback Machine Alamogordo Daily News, 26 October 2008. Retrieved: 17 May 2014. <a href="http://www.alamogordonews.com/features/ci_10818501" target="_blank">http://www.alamogordonews.com/features/ci_10818501</a> <a href="#fnref:115" class="footnote-back-ref">↩</a></li>
<li id="fn:116">"It wasn't easy, but B-29 Doc takes to Wichita skies". <a href="http://www.kansas.com/news/business/aviation/article90144877.html" target="_blank">http://www.kansas.com/news/business/aviation/article90144877.html</a> <a href="#fnref:116" class="footnote-back-ref">↩</a></li>
<li id="fn:117">Waller, Staff Sgt. Rachel (17 July 2016). "B-29 'Doc' takes to the skies from McConnell". McConnell AFB. Retrieved 3 January 2024. <a href="https://www.mcconnell.af.mil/News/Article/842055/b-29-doc-takes-to-the-skies-from-mcconnell" target="_blank">https://www.mcconnell.af.mil/News/Article/842055/b-29-doc-takes-to-the-skies-from-mcconnell</a> <a href="#fnref:117" class="footnote-back-ref">↩</a></li>
<li id="fn:118">"Allentown, PA: B-29 Doc History Restored Tour". <a href="https://www.b29doc.com/event/allentown-pa-b-29-doc-history-restored-tour/" target="_blank">https://www.b29doc.com/event/allentown-pa-b-29-doc-history-restored-tour/</a> <a href="#fnref:118" class="footnote-back-ref">↩</a></li>
<li id="fn:119">"CAF AirPower History Tour featuring the B-29 Superfortress FIFI". <a href="https://www.airpowersquadron.org/#:~:text=AirPower%20History%20Tour%E2%80%8B%20%C2%B7%20SPRING%20Greenville%2C%20Texas,%C2%B7%20Syracuse%2C%20New%20York%20June%2019%2D23%2C%202024" target="_blank">https://www.airpowersquadron.org/#:~:text=AirPower%20History%20Tour%E2%80%8B%20%C2%B7%20SPRING%20Greenville%2C%20Texas,%C2%B7%20Syracuse%2C%20New%20York%20June%2019%2D23%2C%202024</a> <a href="#fnref:119" class="footnote-back-ref">↩</a></li>
<li id="fn:120">"Enola Gay". National Air and Space Museum. 20 March 2003. Retrieved 15 December 2024. <a href="https://airandspace.si.edu/exhibitions/enola-gay" target="_blank">https://airandspace.si.edu/exhibitions/enola-gay</a> <a href="#fnref:120" class="footnote-back-ref">↩</a></li>
<li id="fn:121">"Frequently Asked Questions Regarding Exhibition of B-29 Superfortress Enola Gay". National Air and Space Museum. 17 May 2005. Retrieved 15 December 2024. <a href="https://airandspace.si.edu/newsroom/press-releases/frequently-asked-questions-regarding-exhibition-b-29-superfortress-enola-gay" target="_blank">https://airandspace.si.edu/newsroom/press-releases/frequently-asked-questions-regarding-exhibition-b-29-superfortress-enola-gay</a> <a href="#fnref:121" class="footnote-back-ref">↩</a></li>
<li id="fn:122">"Boeing B-29 Superfortress". National Museum of the United States Air Force. Retrieved 15 December 2024. <a href="https://www.nationalmuseum.af.mil/Visit/Museum-Exhibits/Fact-Sheets/Display/Article/196252/boeing-b-29-superfortress/" target="_blank">https://www.nationalmuseum.af.mil/Visit/Museum-Exhibits/Fact-Sheets/Display/Article/196252/boeing-b-29-superfortress/</a> <a href="#fnref:122" class="footnote-back-ref">↩</a></li>
<li id="fn:123">"Completed B-29 Superfortress". National Museum of Nuclear Science and History. Retrieved 15 December 2024. <a href="https://www.nuclearmuseum.org/see/exhibits/operation-preservation/completed-b-29-superfortress" target="_blank">https://www.nuclearmuseum.org/see/exhibits/operation-preservation/completed-b-29-superfortress</a> <a href="#fnref:123" class="footnote-back-ref">↩</a></li>
<li id="fn:124">"National Museum of Nuclear Science & History". Atomic Archive. Retrieved 15 December 2024. <a href="https://atomicarchive.com/media/photographs/nuclear-journeys/nmnsh/nmnsh-76.html" target="_blank">https://atomicarchive.com/media/photographs/nuclear-journeys/nmnsh/nmnsh-76.html</a> <a href="#fnref:124" class="footnote-back-ref">↩</a></li>
<li id="fn:125">Weeks, John A. III. "B-29: The Superfortress Survivors." ohnweeks.com, 2009. Retrieved: 17 July 2009. <a href="http://www.johnweeks.com/b29/index.html" target="_blank">http://www.johnweeks.com/b29/index.html</a> <a href="#fnref:125" class="footnote-back-ref">↩</a></li>
<li id="fn:126">"Incident Boeing F-13 Superfortress (B-29) 45-21768, 21 Feb 1947". aviation-safety.net. Flight Safety Foundation. Retrieved 14 March 2022. <a href="https://aviation-safety.net/wikibase/98695" target="_blank">https://aviation-safety.net/wikibase/98695</a> <a href="#fnref:126" class="footnote-back-ref">↩</a></li>
<li id="fn:127">Perry, Tony (24 May 1995). "Dream of Salvaging B-29 Goes Up in Smoke : Aviation: Fire before takeoff destroys warplane that crashed in Greenland in 1947. Three Southland men spent $1 million on three-year effort". Los Angeles Times. Retrieved 14 March 2022. <a href="https://www.latimes.com/archives/la-xpm-1995-05-24-mn-5487-story.html" target="_blank">https://www.latimes.com/archives/la-xpm-1995-05-24-mn-5487-story.html</a> <a href="#fnref:127" class="footnote-back-ref">↩</a></li>
<li id="fn:128">United States v. Reynolds, 345 U.S. 1, 6-7 (1953) <a href="/wiki/United_States_v._Reynolds" target="_blank">/wiki/United_States_v._Reynolds</a> <a href="#fnref:128" class="footnote-back-ref">↩</a></li>
<li id="fn:129">"B-29 Super Fortress Lake Mead National Recreation Area". Advanced Diver Magazine. 2008. Retrieved 23 July 2014. <a href="http://www.advanceddivermagazine.com/articles/B29/B29.html" target="_blank">http://www.advanceddivermagazine.com/articles/B29/B29.html</a> <a href="#fnref:129" class="footnote-back-ref">↩</a></li>
<li id="fn:130">"RB-29A 44-61999". Peak District Air Accident Research. 8 August 2016. Retrieved 15 December 2024. <a href="https://www.peakdistrictaircrashes.co.uk/crash_sites/peak-district/boeing-rb-29a-44-61999-higher-shelf-stones/" target="_blank">https://www.peakdistrictaircrashes.co.uk/crash_sites/peak-district/boeing-rb-29a-44-61999-higher-shelf-stones/</a> <a href="#fnref:130" class="footnote-back-ref">↩</a></li>
<li id="fn:131">"Superfortress 44-61999 Over Exposed!". aircrashsites.co.uk. Recovery Party Account. 14 February 2013. Retrieved 15 December 2024. <a href="https://aircrashsites.co.uk/air-crash-sites-5/superfortress-44-61999-over-exposed-recovery-party-account/" target="_blank">https://aircrashsites.co.uk/air-crash-sites-5/superfortress-44-61999-over-exposed-recovery-party-account/</a> <a href="#fnref:131" class="footnote-back-ref">↩</a></li>
<li id="fn:132">"Narrative Summaries of Accidents Involving U.S. Nuclear Weapons, 1950–1980]" (PDF). Department of Defense. Archived from the original (PDF) on 22 February 2013. <a href="https://web.archive.org/web/20130222142443/http://www.dod.gov/pubs/foi/operation_and_plans/NuclearChemicalBiologicalMatters/965.pdf" target="_blank">https://web.archive.org/web/20130222142443/http://www.dod.gov/pubs/foi/operation_and_plans/NuclearChemicalBiologicalMatters/965.pdf</a> <a href="#fnref:132" class="footnote-back-ref">↩</a></li>
<li id="fn:133">"17 die, 60 hurt in B-29 crash". Milwaukee Sentinel. Associated Press. 7 August 1950. p. 1.[permanent dead link] <a href="https://news.google.com/newspapers?id=aykxAAAAIBAJ&sjid=4A0EAAAAIBAJ&pg=4657%2C4013544" target="_blank">https://news.google.com/newspapers?id=aykxAAAAIBAJ&sjid=4A0EAAAAIBAJ&pg=4657%2C4013544</a> <a href="#fnref:133" class="footnote-back-ref">↩</a></li>
<li id="fn:134">"17 dead as B-29 explodes". Lewiston Morning Tribune. (Idaho). Associated Press. 7 August 1950. p. 1. <a href="https://news.google.com/newspapers?id=sa5eAAAAIBAJ&sjid=Ti8MAAAAIBAJ&pg=1948%2C2867484" target="_blank">https://news.google.com/newspapers?id=sa5eAAAAIBAJ&sjid=Ti8MAAAAIBAJ&pg=1948%2C2867484</a> <a href="#fnref:134" class="footnote-back-ref">↩</a></li>
<li id="fn:135">"Seconds spell great tragedy in B-29 crash". Spokane Daily Chronicle. (Washington). Associated Press. 7 August 1950. p. 2. <a href="https://news.google.com/newspapers?id=7NlXAAAAIBAJ&sjid=V_YDAAAAIBAJ&pg=5360%2C2240845" target="_blank">https://news.google.com/newspapers?id=7NlXAAAAIBAJ&sjid=V_YDAAAAIBAJ&pg=5360%2C2240845</a> <a href="#fnref:135" class="footnote-back-ref">↩</a></li>
<li id="fn:136">"The Travis B-29 Crash". Travis Air Force Base Heritage Center. Archived from the original on 17 March 2017. Retrieved 17 March 2017. <a href="https://web.archive.org/web/20170317144143/https://travisheritagecenter.org/html/crash.html" target="_blank">https://web.archive.org/web/20170317144143/https://travisheritagecenter.org/html/crash.html</a> <a href="#fnref:136" class="footnote-back-ref">↩</a></li>
<li id="fn:137">Loftin, LK, Jr. Quest for Performance: The Evolution of Modern Aircraft. Archived 13 June 2006 at the Wayback Machine NASA SP-468. Retrieved: 22 April 2006. <a href="https://www.hq.nasa.gov/pao/History/SP-468/cover.htm" target="_blank">https://www.hq.nasa.gov/pao/History/SP-468/cover.htm</a> <a href="#fnref:137" class="footnote-back-ref">↩</a></li>
<li id="fn:138">Lednicer, David. "The Incomplete Guide to Airfoil Usage". m-selig.ae.illinois.edu. Retrieved 16 April 2019. <a href="https://m-selig.ae.illinois.edu/ads/aircraft.html" target="_blank">https://m-selig.ae.illinois.edu/ads/aircraft.html</a> <a href="#fnref:138" class="footnote-back-ref">↩</a></li>
<li id="fn:139">"B-29 Superfortress." Boeing. Retrieved: 22 March 2012. <a href="http://www.boeing.com/history/boeing/b29.html" target="_blank">http://www.boeing.com/history/boeing/b29.html</a> <a href="#fnref:139" class="footnote-back-ref">↩</a></li>
<li id="fn:140">AAF manual No. 50-9: Pilot's Flight Operating Instructions for Army model B-29, 25 January 1944, page 40; Armament <a href="#fnref:140" class="footnote-back-ref">↩</a></li>
<li id="fn:141">For the B-29B-BW all armament and sighting equipment was removed except for tail position; initially 2 x .50 in M2/AN and 1× 20 mm M2 cannon, later 3 × 2 × .50 in M2/AN with APG-15 gun-laying radar fitted as standard. <a href="/wiki/.50_BMG" target="_blank">/wiki/.50_BMG</a> <a href="#fnref:141" class="footnote-back-ref">↩</a></li>
<li id="fn:142">Gunston, Bill (1978). The illustrated encyclopedia of combat aircraft of World War II. New York: Bookthrift Publications. p. 202. ISBN 0-89673-000-X. <a href="0-89673-000-X" target="_blank">0-89673-000-X</a> <a href="#fnref:142" class="footnote-back-ref">↩</a></li>
<li id="fn:143">Gunston, Bill (1978). The illustrated encyclopedia of combat aircraft of World War II. New York: Bookthrift Publications. p. 202. ISBN 0-89673-000-X. <a href="0-89673-000-X" target="_blank">0-89673-000-X</a> <a href="#fnref:143" class="footnote-back-ref">↩</a></li>
<li id="fn:144">History of the Mark 4 Bomb (Report). Sandia National Labs., Albuquerque, NM (USA). February 1967. p. 33. <a href="https://osf.io/46sfd/" target="_blank">https://osf.io/46sfd/</a> <a href="#fnref:144" class="footnote-back-ref">↩</a></li>
<li id="fn:145">History of the Mark 6 bomb (Report). Sandia National Labs., Albuquerque, NM (USA). November 1967. p. 20. <a href="https://osf.io/gaevf" target="_blank">https://osf.io/gaevf</a> <a href="#fnref:145" class="footnote-back-ref">↩</a></li>
</ol>

Boeing B-29 Superfortress open-in-new

Boeing B-29 Superfortress