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Pratt & Whitney TF33 Turbofan

The Pratt & Whitney TF33 turbofan engine was developed from the highly successful Pratt & Whitney J57 engine core. Starting in 1960, the civilian version (designated the JT3D) powered the Boeing 707-120 and McDonnell Douglas DC-8 airliners. The TF33 military version powered the Boeing B-52H Stratofortress and KC-135s. Since that time, the U.S. Air Force has used variants of the TF33 on Lockheed Martin’s C-141 Starlifters and Boeing’s E-3A Sentry Airborne Warning and Control System (AWACS) and E-8C Joint Surveillance Target Attack Radar System (Joint STARS). The TF33 also powered the Boeing VC-137C SAM 26000 on display in the museum's Presidential Gallery.

The TF33-P-7 engine on display provided 20,250 pounds of thrust to the C-141. It is the same type of engine as those on the C-141C Hanoi Taxi, which is displayed in this gallery. 

TECHNICAL NOTES (Pratt & Whitney TF33-P-7):

Compressor: Axial flow, 7-stage

Turbine: Single and 3-stage

Thrust: 21,000 lbs.

Weight: 4,360 lbs.

Bypass Ratio: 3.9:1

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Related Fact Sheets
Lockheed C-141C Starlifter
Boeing VC-137C SAM 26000 (Air Force One)