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| Stuff
You Can Buy |
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| Other
Stuff |
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Pratt
& Whitney J57 (JT3)
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| The
Engine |
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Specifications |
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The
J57 was the world's first jet engine to develop 10,000 lbs
thrust. It evolved from the T45 turboprop engine designed for the
XB-52 program. The J57 featured a dual-rotor axial-flow compressor
which allowed low fuel consumption over a wide operating range and
improved the sluggish acceleration previously characteristic of jet
engines.
The civil version, the JT3 made possible
the Boeing 707 and Douglas DC-8.
Production began in 1953 and lasted to 1970 (per U.S. Air Force
Museum. Pratt & Whitney gives the production dates as 1951 -
1965). Over 21,000 were produced.
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 | Turbojet |
| Dual-rotor axial-flow compressor |
| mass flow: 164-187 lbs/sec |
| pressure ratio: 12.5 |
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| Models |
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Used
by |
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| YJ57-P-3: 8,700 lb (38.7 kN) thrust |
| J57-P-8B: 14,500 lb (64.5 kN) thrust w/afterburner |
| J57-P-10: 10,500 lb (46.7 kN) thrust |
| J57-P-19W: 12,100 lb (53.8 kN) thrust with water injection |
| J57-P-20A: 18,000 lb (80.1 kN) thrust |
| J57-P-21A: 17,000 lb (75.6 kN) thrust |
| J57-P-23: 17,200 lb (76.5 kN) thrust |
| J57-P-55: 16,900 lb (75.2 kN) thrust with afterburner |
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| Related
Pages |
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page updated 19 July 2003
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