Pratt & Whitney YJ57 / JT3C
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YJ57-P-3 cut-away demonstrator
The J57 was a turbojet 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 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. First run in 1952, the engine was produced from 1951 to 1965 with a total of 21,170 built.
One XT57 was installed in the nose of a C-124 (BuNo 52-1069), and tested in 1956.
The Pratt & Whitney J57 (company designation: JT3C). The J57 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.
Variants:
J57-P-1W
11,400 lbf (51 kN) s.t with water injection (B-52B)
J57-P-1WA
As P-1W
J57-P-1WB
As P-1W
J57-P-4A
16,200 lbf (72.06 kN) thrust
J57-P-8A
10,400 lbf (46.26 kN) thrust
J57-P-10
12,400 lbf (55.16 kN) thrust
J57-P-11
9,700 lbf (43.15 kN) thrust, 14,800 lbf (65.83 kN) thrust
J57-P-13
14,880 lbf (66.19 kN) thrust
J57-P-16
16,900 lbf (75.17 kN) thrust
J57-P-20
18,000 lbf (80.07 kN) thrust
J57-P-20A
18,000 lbf (80.07 kN) thrust
J57-P-21
17,000 lbf (75.62 kN) thrust
J57-P-25
15,000 lbf (66.72 kN) thrust
J57-P-31
J57-P-37A
J57-P-43W
13,750 lbf (61.16 kN) thrust
J57-P-43WB
13,750 lbf (61.16 kN) thrust
J57-P-59W
13,750 lbf (61.16 kN) thrust
T57
15,000 hp (11,185.50 kW) turboprop
JT3C-2
Civilian derivative of the J57-P-43WB, 13,750 lbf (61.16 kN) thrust
JT3C-6
13,500 lbf (60.05 kN) thrust
JT3C-7
12,000 lbf (53.38 kN) thrust
JT3C-12
13,000 lbf (57.83 kN) thrust
JT3C-26
Civilian derivative of the J57-P-20, 18,000 lbf (80.07 kN) thrust
JT3D/TF33
A turbo-fan derivative of the J57.
PT5
Company designation for the T57.
Applications:
J57 (Military)
Boeing B-52 Stratofortress (dash 1W, 1WA, 1WB)
Boeing C-135 Stratolifter and KC-135 Stratotanker
Convair F-102 Delta Dagger (dash 25)
Convair YB-60 (dash 3)
Douglas A3D Skywarrior (dash 10)
Douglas F4D Skyray (dash 8, 8A, 8B)
Douglas F5D Skylancer
Lockheed U-2
Martin B-57 Canberra
McDonnell F-101 Voodoo (dash 55)
North American F-100 Super Sabre (dash 21 and 21A)
Northrop SM-62 Snark
Vought F-8 Crusader (dash 8)
JT3C (Civilian)
Boeing 707
Boeing 720
Douglas DC-8
T57 turboprop
Douglas C-124 Globemaster II testbed
Douglas C-132 (not built)
Specifications:
JT3C-7
Type: civil turbojet
Length: 136.77in (3474mm)
Diameter: 38.8in (985.5mm) LP compressor inlet
Dry weight: 3495lb (1585kg) dry
Compressor: all-axial, 9-stage LP compressor, 7-stage HP compressor
Combustors: cannular, 8 flame tubes
Turbine: all-axial,single stage HP turbine, 2-stage LP turbine
Maximum thrust: 12030 lbf (53.5 kN) @ Take-off, SLS, ISA
Overall pressure ratio: 12.5:1
Specific fuel consumption: 0.785 lb/hr/lbf (22.24g/s/KN) @ Take-off, SLS, ISA and 0.909 lb/hr/lbf (25.75g/s/KN) @Max Cruise 3550lbf M0.85,35000ft,ISA
Thrust-to-weight ratio: 3.44
J57-P-23
Type: Afterburning turbojet
Length: 244 in (6,200 mm)
Diameter: 39 in (1,000 mm)
Dry weight: 5,175 lb (2,347 kg)
Compressor: Two-spool 16-stage axial compressor
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)
