how does a jet engine works?

Answer 1

Well, a jet engine is like two sets of fans on the same shaft. You have a fan in front that sucks air in and compresses it. The you mix in fuel and it burns causing the gas to expand. This expanding gas drives a fan at the back. Conceptually, this works the same as a turbocharger which pumps air into an engine and is driven by the exhaust coming out.

That is how a regular turbo jet engine works and it gets all of its thrust by the exhaust out the back. However, most airliners today use fan jets. These are similar but the front fan is bigger than what you need. Some of the air blows around the compressor section and adds thrust similar to they way a propellor does.

Answer 2

First you get a bunch of jet fuel. Then you hit the starter switch in the cock pit. Now you want to light the burners and kick on some fuel. The fuel is atomized so that it mixes with air and gives us a nice clean burn. Once the fire's lit, the burner starts heating up. The heat causes the air to expand rapidly and causes it to shoot out the back end like a rocket. Now the air is streaming out the engine but it has to go through these turbines to get to the other side. Well once it is passing through the tubines it makes the turbines start to crank. So you have the one tubine cranking over the compressor now and also creatin some 'lectricity for us. Now the other turbine is going to start cranking down on the fan. What we got now is a fan suckin in a bunch of air giving the compressor some head. Now that the compressor has head it can pump that air into the boiler at a much more compressed air. This will increase our engergy output as compared to when it was first started. Well the engine keeps on cranking over till it reaches its operating speed.

Hope that helps. I realize I didn't go into the lubrication system and electrical system in much detail and also there's the afterburner and nozzle. Lot's of tubing, channels, and stages are not mentioned either. You also didn't mention which type of jet engine so I didn't get into the specific engine configurations.

Answer 3

Cool air from the intake of the engine is heated in one direction. The warming air direction is changed toward the center of the engine where it is heated further and compressed. The combination of the expansion of the hot air and the directional change toward a more confined space, builds the pressure of the air. The hot, compressed air is then changed in direction again towards the rear of the engine, where the "thrust" is delivered out the rear of the engine. The expulsion of this hot air propels what ever is attached to the engine in the opposite direction.

Answer 4

Hi. A jet engine works by compressing air, adding fuel, burning the fuel (which expands the air) and pushing the exhaust out the back for thrust. If you are curious, look up "jet engine", "scramjet", ramjet", "turbofan", "turboprop". They all genetate thrust but use different techniques. Good question!!

Answer 5

This is the same answer I gave to your same question:
A jet engine sucks air in and compresses it while mixing it with fuel. The air is then ignited and gets forces out. The force is then used to propel the aircraft.

Answer 6

It's quite simple. a combustable material ignites, and the expanding gass gets pushed through a nozzle. Newton's 3rd law. The gas gets pushed downward (or backward), pushing the vehicle the opposite way.

Answer 7

I give Up

Answer 8

Similar to if you blow up a balloon and then let it go.

Answer 9

http://www.usnasw.org/jet_engine_work.htm

Good site.