Encyclopedia Astronautica

Pratt and Whitney turbofan engine. 75.6 kN. In Production. Thrust is maximum sea level thrust; specific impulse is sea level value at that thrust. Isp=1980s.

Thrust (sl): 68.700 kN (15,444 lbf). Thrust (sl): 7,008 kgf.

Status: In Production.
Thrust: 75.60 kN (16,996 lbf).
Specific impulse: 1,980 s.
Burn time: 33,000 s.

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Associated Propellants
  • Air/Kerosene Ambient air (78 % nitrogen, 21% oxygen, etc.) is scooped up by air intakes and used in turbojet, turbofan, ramjet, scramjet, or other airbreathing engines. It is used to burn aviation-grade kerosene, commercial grade JP-4 or JP-5, their military equivalents, or special high-temperature blends such as those used in the SR-71. More...

Associated Stages
  • B-1A Mach 2 rocket launch aircraft. Loaded/empty mass 159,637/81,587 kg. Thrust 302.40 kN. Specific impulse 1980 seconds. N. American Bomber-variable geometry. Maximum release conditions: Bomb bay mounted, 16,364 kg (9.4 m length x 2.5 m diameter x 2.5 m span) at 2,096 kph at 11,900 m altitude. More...

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