2007-01-31 23:34:43 · 6 answers · asked by kcsecu 1 in Cars & Transportation ➔ Aircraft
Here is the process -
The fuel is pumped to the combustion chamber and mixed with air .
Then the mixture is squeezed and blasts . It creates thrust from all sides and the escapes through the back of the combustion chamber where there is a gap . It thrusts the air outside and provides a little weaker thrust and causes the airplane to move .
2007-02-01 01:46:22 · answer #1 · answered by ASH 2 · 0⤊ 0⤋
I'll give you the quick and dirty answer since there are many different kinds of 'jet engines'. Layman's terms are in quotes, since describing the theories and discussing such things as pressure differential would take to long.
Stage 1 - Intake - Air is 'sucked' into the engine and compressed by the compressor blades. There are many stages of blades depending on the engine. These stages increase the pressure and slow down the air. In turbofan engines some of the air is bypassed around the inside of the engine for many technical reasons.
Stage 2 - Burn - The high pressure air is mixed with fuel and burnt, resulting in high temperature, high velocity expansion. Unlike a car engine, in which the combustion is similar to rythmic explosions, a jet engine burns continuously.
Stage 3 - Expand - The high velocity air 'blows' through turbine stages. These turbines stages are connected to the compressor stages. The turbines turn the compressor stage to produce the 'suck'. This is why a jet engine needs a source of power (Auxillary Power Unit- APU) to start up, something has to start turning the blades first.
Stage 4 - Exhaust - The high temp, high velocity air blows out of the tail pipe, producing thrust. Thrust comes down to physics (Action-Reaction).
Some jet engines are fitted with 'After-Burners'. An after-burner is when fuel is sprayed directly into the exhaust (in a special section called a 'burn-can'), causing it to ignite. Using after-burners can double thrust, but also will also almost triple fuel consumption.
The stages of a jet engine are often called 'Suck, Press, Burn, Blow'.
2007-02-01 00:14:10 · answer #2 · answered by BP 2 · 2⤊ 0⤋
The poster above pretty much nails this question.
In short, jet engines are principally based on one of Newton's Laws of Motion: "Every action has an equal and opposite reaction".
Air is sucked into the engine from the front, compressed, mixed with fuel, ignited, and then blasted out of the back. The act of blowing the exhaust gasses out the back end pushed the engine forward - thus creating thrust.
It is the same concept as a garden hose moving around whilst water is being sprayed through the outlet!
2007-02-01 00:26:39 · answer #3 · answered by Woody 3 · 1⤊ 0⤋
it is called Thrust. not much unlike blowing up a balloon and letting it go. The escaping air pushes the balloon through the air. Well the jet engine is of course attached to the airframe of the plane and produces an abundance of thrust by compressing air, adding and igniting fuel and exhausting it through a nozzle to produce the thrust which pushes the plane. The cycle of the jet engine is called the Brayton cycle.
2007-02-01 00:12:59 · answer #4 · answered by alk99 7 · 0⤊ 0⤋
basically so no person is defective via any previous solutions, the X-15 develop into no longer a jet. It develop right into a rocket. It develop into taken aloft via a jet airplane. It develop into released at intense altitude and propelled via rocket engines to an altitude that is often ordinary as area. Jets desire air. while there is little or none, jets won't artwork. Jets are in basic terms used to get spacecraft close to area, no longer into it.
2016-11-02 01:03:51 · answer #5 · answered by quinteros 4 · 0⤊ 0⤋
They are mounted to the body of the jet.
2007-01-31 23:37:16 · answer #6 · answered by Anonymous · 0⤊ 2⤋