World's First Cryogenic Engine Used for Rocket Launchers

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World's First Cryogenic Engine

Cryogenic Engines were being developed during World War II, but the first country that used Cryogenic Engines for Space Mission is Unite States .

The U.S first used the Cryogenic Engine with liquid hydrogen and liquid oxygen fuel in the Space Shuttle Main Engine ( SSME ) which is also known as RS-25 in the year 1981 .

The RS-25 had three engines , at lift-off each producing Thrust of 1859 kN .

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Cryogenic Engine

Its been hard time for the space agencies to do space missions with Ordinary Jet propulsion engines, to go ahead one step further countries like U.S, Russia, France, India, China and Japan developed CRYOGENIC ENGINES .

Advantages of Cryogenic Engines :


  • It uses Liquefied Natural Gas ( LNG ) as fuel
  • Emits ten times less harmful gases than ordinary engines
  • Economical owing to the use of LNG
  • High Amount of Thrust Produced


Hence because of its advantages over traditional rocket engines many space agencies like ISRO, NASA uses Cryogenic Engines for their rocket launchers to carry their pay loads.

In India, ISRO developed CE-20 cryogenic engine with 200kN of thrust which is being used for satellite launch missions   mostly used in  GSLV rockets .


Also read : Difference Between PSLV and GSLV

Cryogenic engine , first cryogenic engine in the world

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