Consider the following Statements about Cryogenic engines 1 Cryo...........

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Consider the following Statements about Cryogenic engines

1. Cryogenic engines use liquid oxygen and liquid hydrogen at very low temperatures.

2. This technology is needed to put heavier, communication Satellites in a geosynchronous transfer orbit.

3. A cryogenic engine provides more force with each kilogram of cryogenic propellant it uses compared to other propellants.

Which of the statements given above is/are correct?

1, 2 and 3

2 and 3 only

1 and 2 only

2 only

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Explanation:

A cryogenic engine/ cryogenic stage is the last stage of space launch vehicles which makes use of Cryogenics. Cryogenics is the study of the production and behaviour of materials at extremely low temperatures (below -150 degree Centigrade) to lift and place the heavier objects in space. Cryogenic stage is technically a much more complexed system with respect to solid or liquid propellant (stored on earth) stages due to the usage of propellants at extremely low temperatures. A cryogenic engine provides more force with each kilogram of cryogenic propellant it uses compared to other propellants, such as solid and liquid propellant rocket engines and is more efficient.