HomeVisitMuseum ExhibitsFact SheetsDisplay

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

Click here to return to the Global Reach Gallery. 


Find Out More
Related Fact Sheets
Lockheed C-141C Starlifter
Boeing VC-137C SAM 26000 (Air Force One)
Note: The appearance of hyperlinks does not constitute endorsement by the National Museum of the USAF, the U.S. Air Force, or the Department of Defense, of the external website, or the information, products or services contained therein.

Mask Policy:
In accordance with the updated guidance released by the Center for Disease Control and Prevention (CDC), the Department of Defense (DoD) and Wright-Patterson Air Force Base, the National Museum of the U.S. Air Force will require all visitors to wear face masks indoors effective July 30, 2021 until further notice.

Visitors ages three and up will be required to wear masks while indoors at the museum. This policy applies to all visitors, staff and volunteers regardless of vaccination status. Visitors may wear their own masks or a free paper mask will be provided. Cloth masks will also be available for purchase in the Museum Store.
Additional information available here.

Featured Links

Plan Your Visit button
E-newsletter Sign-up button
Explore Museum Exhibits button
Browse Photos button
Visit Press Room button
Become a Volunteer button
Air Force Museum Foundation button
Donate an item button