liquid fuel
There are solid rocket fuels, and there are liquid rocket fuels.
Rocket fuel is either liquid or solid. Other kinds are being developed.
The correct term is "solid propellant rocket". These are rockets that burn fuel that is not a liquid(or they are NOT liquid fuel rockets). These rockets have a fuel that is poured into the rocket case and turns to a solid. Once ignited, there is no stopping the burn or controlling it.A simple example of this is rocket you shoot on the 4th of July. It burns black powder that has been formed into a cardboard case.Whereas, a liquid fuel rocket can be controlled by varying the amount of fuel that is injected into the rocket motor.
The two main types of rocket engines are Solid fuel rocket engines and Liquid fuel rocket engines.
Only two: solid liquid fuel
The name of a common rocket fuel is liquid hydrogen, which is often used in combination with liquid oxygen. There are also other types of rocket fuels including solid fuels and hybrid fuels, but liquid hydrogen is one of the most commonly used.
There are two main types of rocket engines: Solid fuel and liquid fuel. Liquid fuel rocket engines are usually considered significantly better than solid propulsion units, however, they are also significantly more expensive.
A solid fuel rocket engine is just what it sounds like. The fuel inside the rocket is completely solid. In a liquid fuel rocket the fuel is a liquid. Bottle Rockets that you can buy in many stores are fueled with Solid Fuel. Most liquid fuel rockets contain 2 different types of fuel. Once that fuel is mixed and ignited you get your thrust.
Depends on the rocket. Some rockets use solid fuel, some use liquid.
The SRBs (Solid Rocket Boosters) use solid fuel. The 3 main engines and the OMS (Orbital Maneuvering System) use liquid fuel stored in the External Tank.
The earliest rockets--i.e., those built by the Chinese as early as the 14 century--used solid fuel.
There are two main types of rockets: liquid-fuel and solid-fuel. Liquid-fuel rockets consist of a fuel and oxygen (or other oxidizer) in liquid state. They are combined in a combustion chamber and ignited. The fuel flow to the engine can be controlled, the amount of thrust produced can be regulated and the engine can be turned off or on as needed. Solid-fuel rockets consist of a fuel and oxidizer that are pre-mixed in a solid form. Once the solid fuel is ignited, the resulting thrust cannot be regulated or turned off. This fuel system is simpler, safer, and cheaper-but less efficient-than that of a liquid-fuel rocket.