how to make a jet engine?

Question

how can i make a really small jet engine?

Answer 1

try this link out....

http://www.junkyardjet.com/

or you could just google up the question you asked and it should bring up more information for you...Hope this helps....

Answer 2

Basically, you have an axial-flow compressor mounted on one end of a shaft and a turbine on the other end. This is called the 'Rotor'.

The outlet air from the compressor is passed through a combustion chamber where it is heated to a very high temperature by mixing with burning jet fuel.

The hot air/gas mixture is fed onto the blades of the turbine causing rotation of the whole rotor. The exhaust gases still contain a massive amount of energy. As this exhaust leaves the back of the engine it provides the thrust needed to move the plane.

This cannot all take place on start-up. The rotor is first turned by a starter motor (just like your car) until a certain speed of rotation is achieved. The fuel is then introduced to the combustion chamber and ignited. The starter shuts down and the engine becomes self sustaining .. the compressor is operated by the turbine which in turn, is operated by the air from the compressor being heated in the combustion chamber.

As fuel flow is increased, the engine speed increases, the air flow from the comressor increases and so on ... Eventually the plane is flying. The forward thrust of the plane also increases the air flow into the engine.

And the best of luck ...

Answer 3

The basic principal is really quite simple, you have one spinning shaft, to one end you put a drive proppellar, which is driven by the ehaust fumes of your combustion chamber - in the middle - and at the front you put a fan to force air into the engine to fule the combustion process.

You have three problems.

1. heat, you have to make the engine of heat stable materials.
2. Stopping the motor from accelerating out of control.
3. making it light enough to power a veichle

If you over engineer the beast, then it will be too heavy to power your vechial, and you will loose the power to weight ratio which would make a simpler engine more practical.

The best materials for this are light wexpensive alloys. you have to machine them to be balanced, as the engine is a high speed device, and you have to some how control the combustion process.

Most jet engines try to maximise thier output by a series of fans which work on the expanding gases, and then re-heat the gases, After-burn. But you could dispense with the complex rotar I suppose, and make a simple static device, if you really want a challenge.

The turbo fan used in a car would give you the air compression device, and a supercharger exhaust fan would probally undergo the drive end of the device... I'm guessing here, you need to do quite a bit of reading up on this one.

Answer 4

Have a look on http://www.makezine.com/ a guy there built a resonate jet engine rather than one with a compressor section and turbine to drive it.
Also model aircraft engines are sometime built like German V1s. They have a flap at the front where air is forced in. When fuel burns it gives an increase in pressure which closes the flap and the gas is blown out the rear.
Even more simply buy a 'Jetex' motor which has solid fuel pellets in it.
RoyS.

Answer 5

You can find some kits out there for RC planes that are small jet engines. Really cool too. If you want to make your own you need a lathe, milling machine, drillpress, possibly cast your own parts and quite a bit of reference material. Hope this helps.

The Syko Ward

Answer 6

well most guys have eplained the hardware part of it so ill just concentrate on the fule.

first, it wust be light. you wanna fly right?

then, it must be selfigniting. as it will have to be ignited by the heat from the compressed air (no flame involved)

finally, you have to make sure that it is manageable. if you put in gasoline the whole thing will probably explode. and take you with it!!

Answer 7

get one from a jet get a shrinking ray from some mad professor and shrink it hey prestow a really small jet engine

Answer 8

you ca buy ones for model planes, or, if you're ambitious, make one fom an old car turbocharger, powered by propane from a cylinder - bicycles fitted with one of these can get to 60mph (if you feel suicidal!)

Answer 9

your gonna need a lot of materials and an engineering skill for that

Answer 10

You can buy a kit - look in aeromodelling magazines