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Pratt & Whitney TF33 (JT3D)

The Engine Specifications
The TF33 (JT3D) is a turbofan version of the J57 turbojet.  The first two compressor stages of the canceled J91/JT9 replaced the first three compressor stages of the J57, making it simple to modify existing turbojets with a kit.  The conversion increased thrust by 35 percent and fuel consumption by 15-22 percent.

The TF33 first flew in 1958 and was in production until 1985.  About 8,600 were produced.

bypass ratio: 1.4
mass flow: 450 lbs/sec
Models Used by
JTD3-3: 18,000 lb (80.1 kN) thrust
TF33-P-3: 17,000 lb (75.6 kN) thrust
TF33-P-5: 18,000 lb (80.1 kN) thrust
TF33-P-7: 21,000 lb (93.4 kN) thrust
TF33-P-11: 16,000 lb (71.2 kN)
Boeing KC-135 Stratotanker
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page updated 31 December 2004



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Kenneth W Shanaberger 2000 - 2010