Cryogenic means law temperature ‘cryogenic technology is used in satellite launch vehicles and rockets liquid oxygen and liquid hydrogen are used as the propellant. Liquid oxygen requires temperature below-183oC and liquid hydrogen requires temperature below – 253oC liquid oxygen is highly reactive. These engines give much more thrust in comparison to other propellant of same weight. They are very efficient and are used through about the world.
In 1995 a successful ground – firing of the liquid engine was achieved by ISRO. These engines can be to proved very helpful in launch of heavy vehicles in space. India is launching many Satellites and so this technology is much required for its space programme development.
When India will develop this technology it will provide not only self – reliance in space projects but also a big market of satellite launch of the world.