Pratt & Whitney J57
| J57 / JT3C | |
|---|---|
| J57 on display at the Evergreen Aviation & Space Museum | |
| Type | Turbojet |
| National origin | United States |
| Manufacturer | Pratt & Whitney |
| First run | 1950 |
| Major applications | |
| Number built | 21,170 built |
| Developed from | Pratt & Whitney XT45 |
| Developed into | |
| Variants | Pratt & Whitney JT3D/TF33 |
The Pratt & Whitney J57 (company designation: JT3C) is 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. It is a two spool engine.
The J57/JT3C was developed into the J52 turbojet, the J75/JT4A turbojet, the JT3D/TF33 turbofan, and the XT57 turboprop (of which only one was built). The J57 and JT3C saw extensive use on fighter jets, jetliners, and bombers for many decades.