How do rocket engines work?

Can you explain how rocket engines work?

Sure! Rocket engines work on the principle of Newton's third law of motion: for every action, there is an equal and opposite reaction. They expel gas at high speed, which propels the rocket in the opposite direction.

What types of rocket engines are there?

There are mainly two types: liquid rocket engines, which use liquid propellants, and solid rocket engines, which use solid propellants. Each has its own advantages and applications.

How do liquid rocket engines differ from solid ones?

Liquid rocket engines can be throttled and restarted, allowing for more control, while solid rocket engines are simpler and more reliable but cannot be turned off once ignited.

What fuels are commonly used in rocket engines?

Common fuels include liquid oxygen and liquid hydrogen for liquid engines, and a mixture of powdered metals and oxidizers for solid engines.

Can you give an example of a rocket that uses these engines?

Certainly! The Space Shuttle used liquid rocket engines for its main propulsion, while the boosters used solid rocket engines.