What is the fuel used for rocket launch?

Theoretically, the best liquid fuel is liquid hydrogen, which can be mixed with liquid oxygen to produce a specific impulse of about 350 [specific impulse: the ratio of thrust (kilogram force) of rocket engine to its mass flow per second (kilogram/second)].

2. Solid rocket fuel

Sodium borohydride, dimer acid diisocyanate, ferrocene and their derivatives can be used as composite solid rocket fuels. Some low-density metals or nonmetals, such as lithium, beryllium, magnesium, aluminum, boron, etc. Beryllium, in particular, can release huge energy when burning, and the heat released by complete combustion of beryllium per kilogram is as high as 15000 kJ, which is a high-quality rocket fuel.

Extended data rocket fuel

Aviation kerosene is colorless and transparent, smells no different from ordinary kerosene and is non-volatile. The ignition point is around 3000℃, let alone flint, even if there is an open flame, it will not ignite.

The oxidant is dinitrogen tetroxide (n? o？ ), liquid oxygen (o? ) or hydrogen peroxide (h? o？ )

Long before the invention of launch vehicles, people used oil and steam as fuels, and cars, ships and planes were driven by these fuels. Later, scientists invented a launch vehicle powered by chemical energy.

The launch vehicle uses kerosene, alcohol, unsymmetrical dimethylhydrazine and liquid hydrogen. As the combustion agent, oxidants such as liquid oxygen and nitrogen tetroxide are used. Help burn. People are used to calling combustibles and oxidants the fuels or propellants of rocket engines.

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