Its been studied that only in comparison with solids, liquids have the ability to start and stop. But with the technology improving, theoretically it is possible for solids to stop and start. As of today Only liquids are capable.
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Chemical rocket
Chemical rocket
The heavier it is the stronger the engine has to be. And the stronger the engine the more fuel will it burn. And the more fuel it burns the more fuel has to be carried in the rocket. And the more fuel the rocket has to lift the stronger the engine has to be. While some Spacecrafts are not light weight such as the Apollo 11 But is the Largest And Fastest That Got to the moon
Two common elements found in rocket fuel are liquid oxygen (O2) and liquid hydrogen (H2). When these two elements are combined and ignited in the rocket engine, they react to produce a powerful thrust that propels the rocket into space.
Solid fuel
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A liquid-fuel rocket or a liquid rocket is a rocket with an engine that uses propellants in liquid form.
in the engine
The fuel in a rocket engine contains chemical energy. When the fuel is burned, it releases heat energy that is converted into thrust to propel the rocket forward.
The heavier it is the stronger the engine has to be. And the stronger the engine the more fuel will it burn. And the more fuel it burns the more fuel has to be carried in the rocket. And the more fuel the rocket has to lift the stronger the engine has to be.
Yes it does. It is the primary factor involved in lending the rocket the ability to leave the launch pad.
Chemical rocket
Chemical rocket
Liquid hydrogen is a common fuel used in rocket engines.
A rocket engine is a reaction engine as the fuel is burnt the thrust created pushes the rocket forward. Newton's 1st law in action; for every reaction there is a equal and opposite reaction.
A jet engine takes oxygen from the air to burn with its fuel. A rocket engine has to take oxygen or some comparable oxidizer with it.