Encyclopedia Astronautica
R-31


Lyulka turbojet engine. 91.2 kN. MiG-25. Out of Production. Used in MiG-25. Thrust is maximum sea level thrust; specific impulse is sea level value at that thrust. Isp=2073s.

Application: MiG-25.

Thrust (sl): 82.900 kN (18,637 lbf). Thrust (sl): 8,449 kgf.

Status: Out of Production.
Thrust: 91.20 kN (20,503 lbf).
Specific impulse: 2,073 s.
Burn time: 3,000 s.

More... - Chronology...


Associated Countries
See also
Associated Manufacturers and Agencies
  • Lyulka Russian manufacturer of rocket engines. Lyulka Design Bureau, Russia. More...

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...

Bibliography
  • Gunston, Bill, The Osprey Encylopedia of Russian Aircraft 1975-1995, Osprey, London, 1995.

Associated Stages
  • MiG-25 Mach 3 rocket launch aircraft. Loaded/empty mass 32,136/19,995 kg. Thrust 182.34 kN. Specific impulse 2073 seconds. Mikoyan Interceptor-cropped delta. Maximum release conditions: Wing mounted, 750 kg (6.3 m length x 2.2 m wingspan) at 3,161 kph at 24,000 m altitude More...

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