Pratt & Whitney JT3C

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YJ57-P-3 cut-away demonstrator at USAF Museum

The Pratt & Whitney JT3C (USAF designation: J57) was a development of the T45 turboprop engine intended for the XB-52. As the B-52 power requirements grew, the design evolved into a turbojet. The JT3C was the first 10,000 lbf (45 kN) thrust class engine in the United States and its designers received the prestigious Collier Trophy for this achievement. On May 25, 1953, a J57-powered YF-100A exceeded Mach 1 on its maiden flight. The engine was produced from 1951 to 1965 with a total of 21,170 built. The JT3C was developed into Pratt & Whitney JT3D turbofan.

Specifications (J57-P-23)

Specifications (J57-P-43WB)

Uses

• Boeing B-52 Stratofortress
• Boeing C-135 Stratolifter and KC-135 Stratotanker
• Convair F-102 Delta Dagger
• Convair XB-60
• Douglas A3D Skywarrior
• Douglas F4D Skyray
• Lockheed U-2
• Martin B-57 Canberra
• McDonnell F-101 Voodoo
• North American F-100 Super Sabre
• Northrop XSM-62 Snark
• Vought F8U Crusader

• Boeing 707
• Boeing 720
• Douglas DC-8

References

1. USAF Museum (http://www.wpafb.af.mil/museum/engines/eng54.htm)
2. Pratt & Whitney (http://www.pratt-whitney.com/about_history_classic_j57.asp)

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