General Electric J47

After losing the J33 and J35 to rival Allison, GE decided to design a J35 replacement. Using the same frame size as the J35, the J47 used a new compressor and turbine. First flight tested in 1948, the J47 was also the first axial-flow engine in the United States to be approved for commercial use.
By the time production ended in 1956 36,500 had been built requiring production at Studebaker and Packard.


  • J47-GE-3: 5,200 lb (23 kN) thrust
  • J47-GE-13: 6,000 lb (27 kN) thrust
  • J47-GE-17B: 7,500 lb (33 kN) afterburning thrust
  • J47-GE-25: 7,200 lb (32 kN) thrust


  • Turbojet
  • 12-stage axial compressor
  • single-stage axial turbine
  • Mass flow: 92 lbs/sec
  • Pressure ratio: 5

used by

  • Convair B-36 Peacemaker
  • North American B-45 Tornado
  • Boeing B-47 Stratojet
  • North American F-86 Sabre