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<h2 id="exo-brake">Exo-Brake</h2>
The first test of the Exo-Brake system from orbit began with the launching of the <a href="/facts/TechEdSat-3p/AN2UQpSv">TechEdSat-3p</a> <a href="/facts/CubeSat/jL2IpYKd">nano-satellite</a> from the <a href="/facts/International_Space_Station/VNPUBz9m">International Space Station</a> on November 19, 2013.<a class="footnote-ref" id="fnref:3" href="#fn:3">3</a>
<a href="/facts/TechEdSat-4/AN2UQpSv">TechEdSat-4</a> is expected to test an Exo-Brake with variable drag in 2014.<a class="footnote-ref" id="fnref:4" href="#fn:4">4</a>
TechEdSat-3p took over 60 days to deorbit, while TechEdSat-4 reentered in about 30 days.<a class="footnote-ref" id="fnref:5" href="#fn:5">5</a>: Fig 3 
A newer Exo-Brake system was tested on <a href="/facts/TechEdSat-5/AN2UQpSv">TechEdSat-5</a>, deployed from the ISS in 2017.<a class="footnote-ref" id="fnref:6" href="#fn:6">6</a> It is a flexible cross shape that can be warped for steering during reentry.<a class="footnote-ref" id="fnref:7" href="#fn:7">7</a>

<h2 id="soarex-flights">SOAREX Flights</h2>
Several investigations related to the SPQR programs and TechEdSat have been flown on Sub-Orbital Aerodynamic Re-entry Experiments (SOAREX) <a href="/facts/Sounding_rocket/em1GgGND">sounding rockets</a> flights.
SOAREX-6 flew 27 November 2008 on an ATK <a href="/facts/ALV_X-1/K730yTvU">ALV X-1</a> sounding rocket, but the rocket veered off course and the flight was terminated by <a href="/facts/Range_safety/gRaLMqaj">range safety</a>. SOAREX-6 survived the launch vehicle explosion and transmitted data until it was destroyed on splashdown.<a class="footnote-ref" id="fnref:8" href="#fn:8">8</a>
SOAREX-7 flew 28 May 2009 aboard a <a href="/facts/Terrier-Orion/QsJvWqEu">Terrier-Orion</a> sounding rocket launched from <a href="/facts/Wallops_Flight_Facility/F6QvD712">Wallops Flight Facility</a> (WFF) in Virginia. A TDRV (Tube Deployed Re-entry Vehicle) was successfully tested after the flight reached its apogee of 134 km.<a class="footnote-ref" id="fnref:9" href="#fn:9">9</a>
On SOAREX-8, which launched on a <a href="/facts/Black_Brant_(rocket)/mxjN9D4v">Black Brant 9</a> sounding rocket, a wireless sensor module, a camera, various communication devices, and a full Exo-Brake were tested.
On SOAREX-9, a wireless sensor module, a camera, and various communication devices were tested.<a class="footnote-ref" id="fnref:10" href="#fn:10">10</a>

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

<ol>
<li id="fn:1">Characterizing An Experimental Decelerator For Delivering Nano-Sat Payloads To Planetary Surfaces Kevin Ramus et al., U. of Idaho, [1] <a href="https://web.archive.org/web/20131203011928/https://solarsystem.nasa.gov/docs/160_Characterizing%20an%20Experimental%20Decelerator%20for%20Delivering%20Nano-Sat%20Payloads%20to%20Planetary%20Surfaces_K.%20Ramus.pdf" target="_blank">https://web.archive.org/web/20131203011928/https://solarsystem.nasa.gov/docs/160_Characterizing%20an%20Experimental%20Decelerator%20for%20Delivering%20Nano-Sat%20Payloads%20to%20Planetary%20Surfaces_K.%20Ramus.pdf</a> <a href="#fnref:1" class="footnote-back-ref">↩</a></li>
<li id="fn:2">The SPQR as an Option for Returning Payloads from the ISS after the Termination of STS Flights Marcus Murbach et al., NASA Ames Research Center, [2] <a href="http://explore.mohodisco.com/spqr.pdf" target="_blank">http://explore.mohodisco.com/spqr.pdf</a> <a href="#fnref:2" class="footnote-back-ref">↩</a></li>
<li id="fn:3">Exo-Brake Parachute Launched From International Space Station by Keith Cowling, SpaceRef, Nov 2013 [3] <a href="http://spaceref.com/nasa-hack-space/exo-brake-parachute-launched-from-international-space-station.html" target="_blank">http://spaceref.com/nasa-hack-space/exo-brake-parachute-launched-from-international-space-station.html</a> <a href="#fnref:3" class="footnote-back-ref">↩</a></li>
<li id="fn:4">Exo-Brake Parachute Launched From International Space Station by Keith Cowling, SpaceRef, Nov 2013 [3] <a href="http://spaceref.com/nasa-hack-space/exo-brake-parachute-launched-from-international-space-station.html" target="_blank">http://spaceref.com/nasa-hack-space/exo-brake-parachute-launched-from-international-space-station.html</a> <a href="#fnref:4" class="footnote-back-ref">↩</a></li>
<li id="fn:5">"TechEdSat-4 (Technological and Educational Nanosatellite-4) - Satellite Missions - eoPortal Directory". directory.eoportal.org. Retrieved 2019-02-23. <a href="https://directory.eoportal.org/web/eoportal/satellite-missions/content/-/article/techedsat-4" target="_blank">https://directory.eoportal.org/web/eoportal/satellite-missions/content/-/article/techedsat-4</a> <a href="#fnref:5" class="footnote-back-ref">↩</a></li>
<li id="fn:6">"Exo-Brake Enables Safe Return for Small Spacecraft - Tech Briefs :: Aerospace & Defense Technology". www.aerodefensetech.com. April 2017. Retrieved 2019-02-23. <a href="https://www.aerodefensetech.com/component/content/article/tb/techbriefs/machinery-and-automation/26698" target="_blank">https://www.aerodefensetech.com/component/content/article/tb/techbriefs/machinery-and-automation/26698</a> <a href="#fnref:6" class="footnote-back-ref">↩</a></li>
<li id="fn:7">"Exo-Brake Enables Safe Return for Small Spacecraft - Tech Briefs :: Aerospace & Defense Technology". www.aerodefensetech.com. April 2017. Retrieved 2019-02-23. <a href="https://www.aerodefensetech.com/component/content/article/tb/techbriefs/machinery-and-automation/26698" target="_blank">https://www.aerodefensetech.com/component/content/article/tb/techbriefs/machinery-and-automation/26698</a> <a href="#fnref:7" class="footnote-back-ref">↩</a></li>
<li id="fn:8">nasasoarex (2009-08-20), SOAREX 6 Survives Launch Vehicle Explosion, archived from the original on 2021-12-20, retrieved 2019-05-03 <a href="https://www.youtube.com/watch?v=g1kbm3JsfyA" target="_blank">https://www.youtube.com/watch?v=g1kbm3JsfyA</a> <a href="#fnref:8" class="footnote-back-ref">↩</a></li>
<li id="fn:9">Murbach, M. S. (15 June 2015). "n Overview of the SOAREX" and" TechEdSat Flight Series: Missions To Advance Re-entry Experimentation, Planetary Mission Design," and" Flight Technology" (PDF). Koln, Germany: NASA. Archived from the original (PDF) on 29 December 2016. Retrieved 23 February 2019. <a href="https://web.archive.org/web/20161229151730/https://solarsystem.nasa.gov/docs/1_04_An%20Overview%20of%20the%20SOAREX%20and%20TechEdSat%20Flight%20Series_M.S.%20Murbach.pdf" target="_blank">https://web.archive.org/web/20161229151730/https://solarsystem.nasa.gov/docs/1_04_An%20Overview%20of%20the%20SOAREX%20and%20TechEdSat%20Flight%20Series_M.S.%20Murbach.pdf</a> <a href="#fnref:9" class="footnote-back-ref">↩</a></li>
<li id="fn:10">Murbach, Marcus. "TechEdSat 5 / PhoneSat 5 (T5/P5) SmallSat Presentation 2016". Retrieved 9 September 2018. <a href="https://digitalcommons.usu.edu/cgi/viewcontent.cgi?article=3490&context=smallsat" target="_blank">https://digitalcommons.usu.edu/cgi/viewcontent.cgi?article=3490&context=smallsat</a> <a href="#fnref:10" class="footnote-back-ref">↩</a></li>
</ol>

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