Encyclopedia Astronautica

RS-18 / LMDE
Credit: Boeing / Rocketdyne
Rocketdyne N2O4/Aerozine-50 rocket engine. 15.563 kN. Apollo Lunar Ascent Module Engine. Pressure-fed. Isp=310s.

Thrust: 15.56 kN (3,499 lbf).
Specific impulse: 310 s.
First Launch: 1967.

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Associated Propellants
  • N2O4/Aerozine-50 Nitrogen tetroxide became the storable liquid propellant of choice from the late 1950's. Aerozine was a 50-50 mixture of hydrazine and UDMH developed for use in the Titan 2 missile. Copied in one Russian missile but otherwise straight UDMH used more commonly. Higher boiling point than UDMH. More...

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