The answer, is that there are only two types of rockets which fuel modern spacecraft. they are solid fuel rockets, and liquid fuel rockets
The three kinds of rockets are solid fuel rockets, liquid fuel rockets, and ion powered rockets.
The earliest rockets--i.e., those built by the Chinese as early as the 14 century--used solid fuel.
Rocket fuel.
The two main types of rockets are, Solid Fuel and Liquid Fuel
Here's a rephrasing: How are rockets powered, by fuel? Yes, that's pretty much correct.
Heavier than What?
Yes they do
HNO3
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.
The rockets underneath the shuttle. The side rockets have solid fuel that essentially fuels a controlled explosion out of the nozzles.
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.