2006-08-18 00:46:56 · 12 answers · asked by ducky-mani 2 in Science & Mathematics ➔ Engineering
Jet engines do not really have gears for that purpose.
They get their power from thrust.
By varying the thrust, or exhaust pressure, they can vary the forward speed, similar to a gas engine and the gas pedal.
They do have brakes on their wheels to help them slow down and stop while on the ground.
Their thrust, is similar to a blown up balloon, and let it go. but if you make the hole smaller the balloon will travel slower.
Turboprop have gears but just to reduce the speed, the turbine turns at a much faster speed 40,000 rpm and up, while a turboprop requires a much lower speed
There are different type of jet engines if you are interested check out NASA
http://www.grc.nasa.gov/WWW/K-12/airplane/turbine.html
Hit next at the bottom for the next page,
have fun
2006-08-18 01:00:20 · answer #1 · answered by Juggernaut 3 · 0⤊ 0⤋
Mechanical thrust is given through the exhaust which is directly attached to the engine of the plane for which it does not require any gear shift. Gears are basically used to transmit power. Wheels of an airplane just roll while the plane is taking off. However, they do have brakes.
2006-08-18 09:52:14 · answer #2 · answered by techno_geek 2 · 0⤊ 0⤋
Short answer: No.
Long answer: You only need gears when the engine power is mechanically transfered to the wheels, and the wheels are forced to push the car. On an airplane, the engines push the air, not the wheels, which are only there to keep the plane from skidding.
2006-08-18 03:17:13 · answer #3 · answered by Anonymous · 0⤊ 0⤋
You mean, I'm assuming, DO airplanes have gears. No, they have a propeller attached directly to the crankshaft. The speed is controlled directly by the speed of the motor.
2006-08-18 00:51:52 · answer #4 · answered by Anonymous · 0⤊ 0⤋
No. There is no connection between the engines and the wheels on any airplane.
2006-08-18 00:52:28 · answer #5 · answered by Bostonian In MO 7 · 0⤊ 0⤋
No, the engines of planes with propellers are similar to those of cars, but they don't have gears.
2006-08-18 00:54:46 · answer #6 · answered by StéphanDeGlasgow 5 · 0⤊ 0⤋
NO. They just run their engines faster or slower since it is the jet push from the engines that is moving them.
2006-08-18 00:51:39 · answer #7 · answered by Rich Z 7 · 0⤊ 0⤋
No.
They still need the thrust from the engines to move.
2006-08-18 00:52:01 · answer #8 · answered by beedaduck 3 · 0⤊ 0⤋
Yeah, sure Dud
2006-08-18 00:53:03 · answer #9 · answered by www.tonizek.com 3 · 0⤊ 0⤋
They have mice in the wheels.
2006-08-18 00:52:11 · answer #10 · answered by catnap 4 · 0⤊ 0⤋