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propleller aircraft have long wings that resistant the spin that an engine would generate. if turbine engines spin and if jet airplanes have smaller wings to help them go faster, how do they not spin why flying? single jet planes only. I dont think that pilot influence would be a satisfying answer.

2007-02-18 15:14:25 · 5 answers · asked by jonatan 2 in Science & Mathematics Engineering

sorry about the incoherent phrasing.

2007-02-18 15:16:12 · update #1

jet engines use turbines to pressurize gases. turbines spin so they must produce torque

2007-02-18 15:25:27 · update #2

5 answers

The engine does produce torque. But unlike that of the propeller, the jet engine torque is stronger counterbalanced by two factors: (1) the radial components of the compressed and combusted gases, and (2) the exhaust flow correction guides.

At the exhaust end-plane of the jet engine if the vector velocity of the outlet air pressure is not purely axial any radial component will net out a torque on the engine chassis and hence on the aircraft.

2007-02-18 15:41:29 · answer #1 · answered by sciquest 4 · 0 1

Jet engines (or turbine engines) use stators in the compressor section and nozzles in the turbine (or hot) section. The air flow path in a turbine engine is thus a straight line.

The spinning propeller does not have stators or nozzles so the air flow spins causing a rotational force applied to the air frame.

The turbine engine does not produce spinning air flow.

The turbine engine is sometimes known as a gas producer and is designed to pull in large amounts of air using a rotating air compressor that increases the air pressure through a series of spinning compressor blades and alternate static devices or stators. The spinning blades speed the air up and the stators slow it down. Keep in mind that where there is a velocity decrease there is a pressure increase. By staging this process over and over the air pressure in incrementally increased.

The compressed air is then used to provide cooling and combustion air to burn fuel thereby expanding the air fuel mixture by a factor of several times creating gas flow and thereby force / thrust / pounds per hour / hp or some other power measurement depending on the use of the power. About 75 to 80% of the compressed air is used to cool the turbine engine the remaining air is used to burn the fuel.

Check out solarturbines.com for a picture of the internals of the gas turbine engine.

Cheers.

2007-02-18 15:42:34 · answer #2 · answered by jimmy cee 2 · 0 0

Having spent a bit of time (4,000+ hours on a Commercial license) in various types of prop and turbine driven aircraft, I can tell you that turbine torque effects aren't all that great. However, gyroscopic forces *are* quite noticeable in prop driven aircraft and, to a lesser extent, in turbines. About the only time that prop torque is really noticible is when you suddenly push the dengine from idle to full throttle. Especially in some of the old WWII fighter aircraft.

If pilot control isn't going to be a satisfying answer, I gues you'll just have to be dissatisfied ☺


Doug

2007-02-18 15:42:33 · answer #3 · answered by doug_donaghue 7 · 0 0

According to an air-force pilot on the Military Channel, one of the things that he liked about the new jet fighters (as compared with the older P-51 Mustangs) were that they had no propeller prop to produce torque on the aircraft.

2007-02-18 15:26:05 · answer #4 · answered by Randy G 7 · 0 0

Jet engines do not produce torque.

2007-02-18 15:19:02 · answer #5 · answered by Anonymous · 1 1

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