Pratt & Whitney J57 (JT3)
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 XB52 program. The
J57 featured a dualrotor axialflow 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 DC8.
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.
models
 YJ57P3: 8,700 lb (38.7 kN) thrust
 J57P8B: 14,500 lb (64.5 kN) thrust w/afterburner
 J57P10: 10,500 lb (46.7 kN) thrust
 J57P19W: 12,100 lb (53.8 kN) thrust with water
injection
 J57P20A: 18,000 lb (80.1 kN) thrust
 J57P21A: 17,000 lb (75.6 kN) thrust
 J57P23: 17,200 lb (76.5 kN) thrust
 J57P55: 16,900 lb (75.2 kN) thrust with afterburner
specifications
 Turbojet
 Dualrotor axialflow compressor
 mass flow: 164187 lbs/sec
 pressure ratio: 12.5
used by
 Douglas A3 Skywarrior
 Boeing B52 Stratofortress
 Boeing C135/707
 Boeing C137
 Douglas DC8
 Douglas F4D Skyray
 Vought F8 Crusader
 North American F100 Super Sabre
 McDonnell F101 Voodoo
 Convair F102 Delta Dagger
 Lockheed U2
