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Hayne Constant
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<p>Hayne Constant, <a href="/facts/Order_of_the_Bath/as761RvN">CB</a>, <a href="/facts/Order_of_the_British_Empire/HlY9buuN">CBE</a>., <a href="/facts/Master_of_Arts/ABQoKTLg">MA</a>., <a href="/facts/Royal_Aeronautical_Society/fGzBa2Q0">FRAeS.</a>, <a href="/facts/Fellow_of_the_Royal_Society/cWs8TdC5">FRS</a>, (26 September 1904 – 12 January 1968) was an English mechanical and aeronautical engineer who developed jet engines during <a href="/facts/World_War_II/2efV5L1U">World War II</a>. </p>