Explanation

Liquid propellant with a boiling point below 200K at standard atmospheric pressure. The fuels include liquid hydrogen, liquid methane, etc; oxidizer includes liquid oxygen, nitrous oxide, etc; It is a gas at room temperature and can be liquefied under deep cold or high pressure conditions. It shall be stored in containers made of special materials and provided with thermal insulation measures. The materials used shall have good compatibility, and their physical properties such as ductility and ductility shall be able to withstand the thermal stress changes caused by temperature changes. It has the characteristics of high energy. It is often used as a component of bipropellant liquid propellant. For example, liquid hydrogen can form a bipropellant high-energy propellant with liquid oxygen, and liquid oxygen can form a bipropellant liquid propellant with kerosene, which is usually used in large launch vehicles.

Classification