Encyclopedia Astronautica
SE-1, 1-1, -2, and -4 Series



rdyse134.jpg
SE-1, 1-1, -2, -4
Credit: Boeing / Rocketdyne
Rocketdyne N2O4/UDMH rocket engine. SE-1, 1-1, -2, and -4 Series. Spacecraft Reaction Control. Pressure-fed. Multiple thrust levels. First flight 1959.

Application: SE-1, 1-1, -2, and -4 Series.

First Launch: 1958.

More... - Chronology...


Associated Countries
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Associated Manufacturers and Agencies
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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