Encyclopedia Astronautica
MD-620


Dassault N2O4/UDMH rocket engine.

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Associated Countries
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Associated Manufacturers and Agencies
  • Dassault French manufacturer of rockets, spacecraft, and rocket engines. Dassault Aircraft, France. More...

Associated Propellants
  • N2O4/UDMH Nitrogen tetroxide became the storable liquid propellant of choice from the late 1950's. Unsymmetrical Dimethylhydrazine ((CH3)2NNH2) became the storable liquid fuel of choice by the mid-1950's. Development of UDMH in the Soviet Union began in 1949. It is used in virtually all storable liquid rocket engines except for some orbital manoeuvring engines in the United States, where MMH has been preferred due to a slightly higher density and performance. More...

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