Rocket
- Mixture of hydrogen and oxygen fuels burn in the combustion chamber.
- Hot gases are expelled through the exhausts at very high speed .
- The high-speed hot gas produce a high momentum backwards.
- By conservation of momentum, an equal and opposite momentum is produced and acted on the rocket, pushing the rocket upwards.
Jet Engine
- Air is taken in from the front and is compressed by the compressor.
- Fuel is injected and burnt with the compressed air in the combustion chamber.
- The hot gas is forced through the engine to turn the turbine blade, which turns the compressor.
- High-speed hot gases are ejected from the back with high momentum.
- This produces an equal and opposite momentum to push the jet plane forward.
