Encyclopedia Astronautica
RD-550


Glushko exotic rocket engine. 98.060 kN. Experimental upper stage engine. Developed 1963-70. Isp=400s. Propellants Lox/30% Beryllium+Pentaborane in 70% Hydrazine.

Toxic exotic propellant engine studied by Glushko in 1963-1970. The specific impulse would have been between 360 and 400 seconds. This was one of the category B engines that had to be developed by OKB-456 Filial 1 because test of the extremely toxic propellants was impossible at Khimki. The notes to Korolev's memoirs report a different propellant combination was considered in 1963, in the earliest design stage of the engine: H2O2/Hydrazine with 30% beryllium additive only.

Application: experimental upper stage engine.

Status: Developed 1963-70.
Thrust: 98.06 kN (22,045 lbf).
Specific impulse: 400 s.
First Launch: 1963-70.

More... - Chronology...


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

Associated Propellants
  • Lox/Beryllium+Pentaborane in Hydrazine 30%/70% Liquid oxygen was the earliest, cheapest, safest, and eventually the preferred oxidiser for large space launchers. Its main drawback is that it is moderately cryogenic, and therefore not suitable for military uses where storage of the fuelled missile and quick launch are required. More...

Bibliography
  • Vetrov, G S, S. P. Korolev i evo delo, Nauka, Moscow, 1998.

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