Pratt & Whitney XT57
| J57 / JT3C | |
|---|---|
 |
|
| YJ57-P-3 cut-away demonstrator at USAF Museum | |
| Type | Turbojet |
| National origin | United States |
| Manufacturer | Pratt & Whitney |
| First run | 1950 |
| Major applications |
B-52 Stratofortress KC-135 Stratotanker B-57 Canberra Boeing 707 Douglas DC-8 F-8 Crusader F-100 Super Sabre Lockheed U-2 |
| Number built | 21,170 built |
| Developed from | Pratt & Whitney XT45 |
| Variants | JT3D/TF33 |
| Developed into | TF33/JT3D |
The Pratt & Whitney J57 (company designation: JT3C) was an axial-flow turbojet engine developed by Pratt & Whitney in the early 1950s. The J57 (first run January 1950) was the first 10,000 lbf (45 kN) thrust class engine in the United States. The J57/JT3C was developed into the J75/JT4A turbojet, JT3D/TF33 turbofan and the PT5/T57 turboprop.
The J57 was a development of the XT45 (PT4) turboprop engine intended for the XB-52. As the B-52 power requirements grew, the design evolved into a turbojet, the JT3. The prestigious Collier Trophy for 1952 was awarded to Leonard S. Hobbs, Chief Engineer of United Aircraft Corporation, for "designing and producing the P&W J57 turbojet engine". 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.
One XT57 was installed in the nose of a JC-124C (BuNo 52-1069), and tested in 1956.
Data from Flight
Data from
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Wikipedia