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While they may appear to be the same type engine, a jet engine and rocket
engine are two separate types of engines. A jet engine functions by pushing
air backwards through the use of different methods (turbines, atmospheric pressure,
etc.) while a rocket engine operates through the force of its exhaust pushing
backwards, thus providing thrust in the opposite direction. In short, because
a rocket engine pushes force backwards through its own exhaust, it is more efficient
than a jet engine in lower atmospheric pressures or sometimes vacuums (such as in space)
A jet, on the other hand, needs air. This is because it uses air as its medium of force
and not its own exhaust.
In relation to your question, a rocket uses a rocket engine
because it is usually built for higher altitudes or escape from the earth's immediate
influence altogether. It therefore has more need for an engine to match. They are
also used by enthusiasts because they are easier, cheaper (depending on type)
and (in comparison, but also depends on type) smaller to build.
I hope this answers your question (but probably confused you
more) Hopefully, someone else who understands this will simplify it
for me, and correct possible mistakes.
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∙ 12y ago
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Type of engine used to power space flights?
rocket engines,compared to jet engines
Working principle of rocket engine?
A rocket engine, or simply "rocket," is a jet engine[1] that uses only propellant mass for forming its high speed propulsive jet. Rocket engines are reaction engines and obtain thrust in accordance with Newton's third law. Since they need no external material to form their jet, rocket engines can be used for spacecraft propulsion as well as terrestrial uses, such as missiles. Most rocket engines are internal combustion engines, although non combusting forms also exist.Rocket engines as a group, have the highest exhaust velocities, are by far the lightest, and are the most energy efficient (at least at very high speed) of all types of jet engines. However, for the thrust they give, due to the high exhaust velocity and relatively low specific energy of rocket propellant, they consume propellant very rapidly.
What is an aircraft engine?
A mechanical device that can work by means of fuel consumption. A mechanical device that can work by means of fuel consumption.
What tarvles faster than a jet plane?
a rocket travles faster than a jet plane
How much hp has a rocket?
rocket what? an engine?, need to know the year and engine size.
What is difference between a rocket a jet engine?
A rocket explodes and a jet doesnt.
What is the difference between a jet engine and a rocket engine in relations to oxygen?
A jet engine takes oxygen from the air to burn with its fuel. A rocket engine has to take oxygen or some comparable oxidizer with it.
Working principal of rocket?
Rocket engines obtain their thrust in accordance with Isaac Newton's third law, making the rocket a reaction engine. A rocket engine is simply a jet engine.
How is a rocket engine like a jet engine?
Because they both fly in the sky
How does the engine make the rocket take off?
jet propultion
What kind of engines do you require to achieve flight in earth atmosphere and in outer space?
To fly in the lower atmosphere requires a jet engine, but to fly in the upper atmosphere and outer space requires the vehicle to have rocket fuel and a speciallly designed rocket engine.
What is an engine with greater engine specs?
A steam engine, a stirling engine, a combustion engine, a jet engine, a rocket engine.
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
What is the difference between a jet and rocket engine?
Well, to start with, a rocket creates thrust by expelling combusted fuel out the back of an opening in the tank or fuel container. The thrust is created by the chemical reaction you might call an explosion. A jet engine uses fans and multiple levels of chambers to compress air which it sucks in the front and blows out the back with greater force. A jet engine sucks oxygen from the air and combusts it with fuel carried in a tank. A rocket engine carries both fuel and oxygen in separate supply tanks and does not require an external oxygen source. For this reason jet engines can only operate inside the Earth's atmosphere, whereas rocket engines can operate outside of the atmosphere. == == == ==
Difference between the thermal jet engines and the chemical rocket engine?
dnt knw
Is a jet a kind of rocket?
Jet engines and rockets are different means of propulsion. A jet engine takes in air, compresses it and mixes it with vaporized fuel. The air fuel mixture is ignited and produces thrust out the rear of the engine. A rocket uses fuel wich is burned and produces thrust with no air intake. Rocket fuels can be solid, liquid or compressed gas.
Which is the fastest between jet and rocket?
A rocket can go faster than a jet because it does not have to deal with the problem of supersonic shock waves blocking the airflow in the intake and thus putting the engine out. However the rocket must carry its own oxidizer.
