Pratt & Whitney J57
From Wikipedia, the free encyclopedia
| J57 / JT3C | |
|---|---|
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| YJ57-P-3 cut-away demonstrator at USAF Museum | |
| Type | Turbojet |
| National origin | United States |
| Manufacturer | Pratt & Whitney |
| First run | 1952 |
| Major applications | B-52 Stratofortress B-57 Canberra Boeing 707 Douglas DC-8 F-8 Crusader F-100 Super Sabre |
| Variants | Pratt & Whitney J52 Pratt & Whitney JT3D |
| Developed into | Pratt & Whitney J75 |
The Pratt & Whitney J57 (company designation: JT3C) was an axial-flow turbojet engine developed by Pratt & Whitney in the early 1950s. The J57 was the first 10,000 lbf (45 kN) thrust class engine in the United States. The J57/JT3C was developed into J75/JT4A turbojet, and the JT3D/TF33 turbofan.
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[edit] Design and development
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 prestigious Collier Trophy for 1952 was awarded to Leonard S. Hobbs, Chief Engineer of United Aircraft Corp., for "designing and producing the P&W J57 turbojet engine".[1] 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.
[edit] Variants
- J57-P-4A: 16,200 lbf (72.1 kN) thrust
- J57-P-8A: 10,200 lbf (45.4 kN) thrust
- J57-P-10: 12,400 lbf (55.1 kN) thrust
- J57-P-11: 9,700 lbf (43.1 kN), 14,800 lbf (65.8 kN) thrust
- J57-P-13: 14,880 lbf (66.2 kN) thrust
- J57-P-16: 16,900 lbf (75.2 kN) thrust
- J57-P-20: 18,000 lbf (80.1 kN) thrust
- J57-P-20A: 18,000 lbf (80.1 kN) thrust
- J57-P-21: 17,000 lbf (75.6 kN) thrust
- J57-P-25: 15,000 lbf (66.7 kN) thrust
- J57-P-43W: 13,750 lbf (61.2 kN) thrust
- J57-P-59W: 13,750 lbf (61.2 kN) thrust
- Derivitive
- Pratt & Whitney T57 - 15,000 shp turboprop
[edit] Applications
- J57 (Military)
- Boeing B-52 Stratofortress
- Boeing C-135 Stratolifter and KC-135 Stratotanker
- Convair F-102 Delta Dagger
- Convair YB-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 F-8 Crusader
- JT3C (Civilian)
- T57 turboprop
- Douglas C-132 (not built)
[edit] Specifications (J57-P-23)
General characteristics
- Type: Afterburning turbojet
- Length: 244 in (6,200 mm)
- Diameter: 39 in (1,000 mm)
- Dry weight: 5,175 lb (2,347 kg)
Components
- Compressor: Two-spool 16-stage axial compressor
Performance
- Maximum Thrust:
- 11,700 lbf (52.0 kN) dry
- 17,200 lbf (76.5 kN) with afterburner
- Overall pressure ratio: 11.5:1
- Turbine inlet temperature: 1,600 °F (870 °C)
- Specific fuel consumption: 2.10 lb/(h·lbf) (214.2 kg/(h·kN)) with afterburner
- Thrust-to-weight ratio: 3.32:1 (32.6 N/kg)
[edit] Specifications (J57-P-43WB)
General characteristics
- Type: Turbojet with water-methanol injection for thrust augmentation
- Length: 169 in (4,300 mm)
- Diameter: 35 in (900 mm)
- Dry weight: 3,875 lb (1,757 kg)
Components
- Compressor: Two-spool 16-stage axial compressor
Performance
- Maximum Thrust: 11,220 lbf (49.9 kN) with water-methanol injection
- Overall pressure ratio: 12.0:1
- Turbine inlet temperature: 1,600 °F (870 °C)
- Specific fuel consumption: 0.755 lb/(h·lbf) (77.0 kg/(h·kN)) at maximum military power
- Thrust-to-weight ratio: 2.9:1 (28.4 N/kg)
[edit] See also
Related development
Related lists
[edit] References
[edit] External links
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