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Provide thrust ... which changes velocity.

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Q: What does the engine do on a space rocket?
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Why doesn't a rocket in space need to use an engine to keep moving in space?

Because there is no friction in space to slow the rocket down. Once the rocket is at its cruising speed, the engine can be switched off. Of course, that means that you have to use a different engine (pointing forwards) to slow down and stop the rocket since friction won't do it for you.


Why wouldn't you hear the roar of a rocket engine in space?

Space is essentially a vacuum. Sound needs a medium to travel through to be heard. Therefore the sound of a rocket engine cannot be heard in space.


Does a rocket have an engine?

yes, a rocket does have a engine. the engine is the horse power to a rocket that gets it to go... and keep going... and keep going. as long as it has a good engine then it would be a pretty long ride in to space.


What happends to fule after it leaves the rocket in space?

The fuel, spelled F-U-E-L, is burned or autocombusts (in the case of hydrazine), and the exhaust shoots out of the rocket engine, propelling the rocket in the opposite direction. After it leaves the engine, it spreads out into space.


Can you use petrol as a fuel in rocket engine?

Rocket fuel contains oxygen, which is not found in space. A rocket in space could theoretically work in space if it were to carry its own oxygen, but other fuels such as hydrogen are more efficient.


During a rocket launch whioch is greater thrust of the rocket engine or weight of the rocket?

During a rocket launch, the thrust of the rocket engine is greater than the weight of the rocket. This is necessary for the rocket to overcome Earth's gravitational pull and lift off into space. The thrust generated pushes the rocket upwards while gravity pulls it down.


How the rocket stay in space and aeroplane can't stay in space?

The engine on the plane is not as strong and big as the rocket Also the pressure could destroy the plane into pieces


What is the name of the part of the rocket where the flames come out of?

The part of the rocket where the flames come out is called the rocket engine or rocket nozzle. This is where the fuel and oxidizer mix and ignite to produce thrust that propels the rocket through the atmosphere or space.


Type of engine used to power space flights?

rocket engines,compared to jet engines


Why does a space craft requires a rocket engine instead of a jet engine?

because jet engines reqire air to take in in order to work, rocket engines spew matter to privide thrust


How was the first rocket launged in space?

The first rocket launched into space was the V-2 rocket developed by Nazi Germany during World War II. It was launched on October 3, 1942, and reached a height of 84.5 kilometers, making it the first man-made object to reach the boundary of space. The rocket was used primarily as a weapon during the war.


Why does a spacecraft need a rocket engine?

A spacecraft needs a rocket engine to provide thrust for propulsion in the vacuum of space. Unlike in the atmosphere, where planes can use lift for flight, rockets rely on their engines to push against the inertia of their mass and propel themselves forward in space.