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The ''' engine intended for the XB-52 . As the B-52 power requirements grew, the design evolved into a Turbojet . The JT3C was the first 10,000 Lbf (45 kN) thrust class engine in the United States and its designers received the prestigious Collier Trophy for this achievement. 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. The JT3C was developed into Pratt & Whitney JT3D Turbofan .


SPECIFICATIONS (J57-P-23)

  type Afterburning Turbojet
  length 244 in (6,200 mm)
  diameter 39 in (1,000 mm)
  weight 5,175 lb (2,347 kg)
  compressor Two-spool 16-stage Axial Compressor
  thrust <br>
  compression 115:1
  aircon 165 lb/s (75 kg/s) at maximum power
  turbinetemp 1,600 °F (870 °C)
  specfuelcon 210 lb/(h·lbf) (2142 kg/(h·kN)) with afterburner
  thrust/weight 332:1 (326 N/kg)




SPECIFICATIONS (J57-P-43WB)

  type Turbojet with water-methanol injection for thrust augmentation
  length 169 in (4,300 mm)
  diameter 35 in (900 mm)
  weight 3,875 lb (1,757 kg)
  compressor Two-spool 16-stage Axial Compressor
  thrust 11,220 lbf (499 kN) with water-methanol injection
  compression 120:1
  aircon 180 lb/s (82 kg/s) at maximum power
  turbinetemp 1,600 °F (870 °C)
  specfuelcon 0755 lb/(h·lbf) (770 kg/(h·kN)) at maximum military power
  thrust/weight 29:1 (284 N/kg)




USES

Military (J57)



REFERENCES

# USAF Museum (http://www.wpafb.af.mil/museum/engines/eng54.htm)
# Pratt & Whitney (http://www.pratt-whitney.com/about_history_classic_j57.asp)