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J57 / JT3C
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.

Contents 1 Design and development 2 Variants 3 Applications 4 Specifications (J57-P-23) 5 Specifications (J57-P-43WB) 6 See also 7 References 8 External links

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.

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

Derivative

• Pratt & Whitney T57 - 15,000 shp turboprop

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)

• Boeing 707
• Boeing 720
• Douglas DC-8

T57 turboprop

• Douglas C-132 (not built)

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)

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)

See also

Related development

• Pratt & Whitney J52/JT8A
• Pratt & Whitney J75/JT4A
• Pratt & Whitney JT3D/TF33
  

Related lists

• List of aircraft engines
  

References

External links

• USAF Museum
• Pratt & Whitney

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This page was last modified on 9 March 2010 at 09:37.

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