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Allison J33 Turbojet

The Engine Specifications
By 1944, General Electric and the U.S. Army realized that more powerful engines were needed than the engines GE was developing.  Using the British Whittle WB.2 turbojet as a starting point, the I-40 was developed by GE and first flew in the XP-80 in 1944.  Using a new designation system, the I-40 was redesignated the J33 with responsibility for further development passing to Allison in 1945.  

Allison produced more than 6,600 J33-A-35s for the Air Force alone.

Centrifugal turbojet
Single-stage centrifugal compressor
Single axial turbine


Models Used by
J33-A-35: 5,400 lb (24 kN) thrust
J33-A-24A: 6,100 lb (27 kN) thrust
J33-A-41: 5,200 lb (23 kN) thrust
Lockheed F-80 Shooting Star
Lockheed T-33 Shooting Star
Lockheed T2V/T-1 Seastar
Martin TM-76 Mace
Related Pages
More about General Electric
More about Allison

page updated 17 August 2003



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Kenneth W Shanaberger 2000 - 2010