J31 Turbojet Engine
Published January 29, 2007
General Electric J31 Turbojet Engine
The General Electric J31 turbojet engine was developed beginning in 1943. Its design grew out of the first American-built turbojet engine, the General Electric I-A, which was a copy of the original turbojet prototype created by British designer Sir Frank Whittle.
The J31 was the first turbojet engine produced in quantity in the United States (241 were produced between 1943 and 1945). It weighed 850 pounds and produced 1,650 pounds of thrust. The engine powered the Bell P-59 "Airacomet," the first American jet aircraft.