There are several possibilities. The largest NASA rockets used liquid hydrogen (with liquid oxygen as the oxidizer).
Hydrazine is one of the more powerful fuels, but it is dangerous and difficult to handle. Some rockets use a version of kerosene, the same chemical used as jet fuel.
Liquid hydrogen. Because it has such i low boiling point, it must be super cooled to liquid form.
Some, or all of the fuel circulates through a cooling jacket around the rocket engine before it is burnt and this cools the rocket's engines. But there might be more to it than that.
The US's first solid fuel rocket capable launching a satellite into orbit was named Scout. I think this was the first solid fuel rocket to carry payloads into orbit because the Soviet Union did not begin it's solid rocket program until later. It is possible the Minuteman ICBM may have been the first solid rocket to reach space but in a ballistic flight (go up and fall back down like a cannon ball), but I haven't been able to find the date of the first Minuteman sub orbital flight and both rockets were developed at about the same time.
Jet engines need oxygen that is pulled from the air outside the aircraft and into the engine to be mixed with fuel and ignited for propulsion. Rocket engines will either use fuel that already contains oxygen in it (such as hydrazine) or pulls in oxygen that is stored onboard the air/spacecraft separate from the fuel.
How much energy is in one gallon of gas, compare this to quantity of energy in one gallon of rocket fuel, voila, your answer!!!
N2 + 3H2 -------> 2NH3
Liquid hydrogen is a common fuel used in rocket engines.
The two main types of rocket engines are Solid fuel rocket engines and Liquid fuel rocket engines.
AMMONIA
it bad
Rocket engines can obtain momentum with fuel additives known as "oxidizers." These substances enhance the combustion of fuel, allowing for more efficient propulsion. Common oxidizers include liquid oxygen and ammonium perchlorate, which help to increase the energy output of the rocket engine.
There are several types of rocket motors, including solid rocket motors, liquid rocket engines, and hybrid rocket engines. Solid rocket motors use a solid propellant that burns uniformly, providing thrust until the fuel is consumed. Liquid rocket engines utilize liquid fuel and oxidizer, allowing for adjustable thrust and the ability to shut down and restart. Hybrid rocket engines combine aspects of both, using a solid fuel and a liquid oxidizer, offering some advantages in performance and safety.
gasoline along with liquid oxygen, so the fuel can burn
Less complexity and cost compared to liquid fuel and it's complex, expensive engines
The space shuttle main engines (SSME) RS 24 engines use rocketdyne liquid hydrogen and liquid oxygen fuel in the engine that is designed in such a way that the engines are reusable.
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.
Liquid rocket engines would act much like a car engine. More fuel, more thrust. Solid rocket engines are either on or off. No throttle control.
Rocket engines that can obtain forward momentum with fuel additives include hybrid rocket engines, which use a combination of solid and liquid or gaseous oxidizers. These engines can enhance performance and efficiency by introducing additives like nitric oxide or hydroxyl-terminated polybutadiene (HTPB) into the fuel mix. Additionally, some liquid rocket engines utilize additives in their propellants to improve combustion characteristics and thrust. Overall, the use of fuel additives can optimize engine performance and enable more efficient propulsion.