what is the role of liquid hydrogen in space rocket class 11
Answers
Liquid hydrogen used as a fuel in space rocket
Answer:
High specific impulse: In combination with liquid oxygen, it produces highest specific impulse.
High exhaust velocity : This is the single most important performance goal and is related to the heat of combustion of the fuel and the molecular mass of the combustion products. Hydrogen surpasses all other chemical fuels in exhaust velocity.
High reaction rate : Rapid reaction of fuel and oxidizer over a wide range of conditions is advantageous in converting the energy content of a chemical fuel to heat in a minimum volume. Hydrogen has high flame speed, low ignition energy, and wide flammability limits.
Combustion chamber cooling: Combustion chamber can be regeneratively cooled by liquid hydrogen being a cryogenic fuel