2006-07-13 14:08:03 · 23 answers · asked by Anonymous in Cars & Transportation ➔ Aircraft
Aerodynamics and lift due to the structure of the wings and air passing the wings. Check wikipedia for a more detailed explanation.
2006-07-13 14:11:34 · answer #1 · answered by Anonymous · 1⤊ 0⤋
A plane flies , because of many factors, 1. the shape of the wing , creates a low pressure on top of the wing and a high pressure on the bottom, and since air pressure moves from High to low, it creates lift (with enough airspeed) 2 . thrust created by the engine (props/jet) moves thge plane forward, until the air passing over the wing(s) is enough to overcome gravity, thats why most airplanes have a wing that is somewhat flat on the bottom (might be curved) and the top of the wing is a chambered . The air hits the leading edge of the wing and some goes up over the wing and some goes under the wing. the air going over the wing has to move faster to keep up with the air moving under the wing, and as moves faster in creates low pressure, and the air thats under the wing is slower. it has higher pressure.
2006-07-13 21:19:50 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Lift.
Lift is the force that directly opposes the weight of an airplane and holds the airplane in the air. Lift is generated by every part of the airplane, but most of the lift on a normal airliner is generated by the wings.
Lift occurs when a moving flow of gas is turned by a solid object. The flow is turned in one direction, and the lift is generated in the opposite direction, according to Newton's Third Law of action and reaction. Because air is a gas and the molecules are free to move about, any solid surface can deflect a flow. For an aircraft wing, both the upper and lower surfaces contribute to the flow turning.
2006-07-13 21:15:21 · answer #3 · answered by Farly the Seer 5 · 0⤊ 0⤋
The shape of the wing. The upper part is curved, making the air take longer to travel over its surface. The underside is flat, so the air travels quicker. This causes a difference in air pressure, and creates "lift". The engine (either propeller or jet) provide thrust. The easiest way to remember it all is:
..................Lift
Drag<----Airplane----->Thrust
................Gravity
So if the force of lift is greater then gravity, the plane will fly. To move the airplane forward, thrust must exceed drag. If the plane is moving forward, then air is passing by the wings, creating lift.
2006-07-13 21:14:49 · answer #4 · answered by trevor_brown 4 · 0⤊ 0⤋
That's a complex question! Let's start here: there are 4 factors affecting a plane's flight. Weight opposes Lift, and Drag opposes Thrust. To put it simply, in unaccelerated flight, Lift equals Weight and Drag equals Thrust. Pretty much what gives it the ability to take off the ground is Lift, which is controlled by different things on the wings, such as the flaps and ailerons. Once you give Lift more force than Weight and Thrust more power than drag, you can take off and stay up there.
2006-07-13 21:13:54 · answer #5 · answered by Anonymous · 0⤊ 0⤋
An aircraft is designed, so that the engine power, gets it off the ground and keeps it flying. This power has to over come the weight of the plane and contents - so that power/thrust is equal to drag, while the design / lift equals weight. No power means that there is no thrust, so there is no lift, the aircraft comes back to earth like a greased crow bar.
2006-07-13 23:41:03 · answer #6 · answered by bnncpr 2 · 0⤊ 0⤋
The wing is rounded on top. This creates a low pressure zone. The bottom of the wing is flat. This creates a high pressure zone. Coupled with the thrust of the engine, the plane "lifts".
2006-07-13 21:15:50 · answer #7 · answered by MARIA 4 · 0⤊ 0⤋
its the design of the wings that creates lift for the aircraft to leave the ground. it is called the airfoil. The shape of the wing such that
when aircraft is moving very fast(because of the thrust of the engines) the air flowing over the upper surface of the wing is faster than the air flowing below it. hence, the pressure is low above the wing (according to the bernauli's theorem) . When the pressure is low enough , the aircraft leaves the ground.
2006-07-14 11:23:59 · answer #8 · answered by genius 2 · 0⤊ 0⤋
Forward thrust and the Bernoulli effect. Look it up. Too complex to explain here. And you cannot oppose gravity without losing. If your airplane loses forward thrust, even old Bernoulli can't save you. The best he can do is get you to the crash site in a straight line.
2006-07-13 22:57:04 · answer #9 · answered by Me again 6 · 0⤊ 0⤋
The shape of the wings. They are curved on top. This makes the air travel further to move across the upper portion, thereby creating lift. Simple process once man figured it out. Its kind of spooky to think of a huge jet that weighs thousands of pounds being able to saty up in the air.
2006-07-13 21:12:43 · answer #10 · answered by K B 6 · 0⤊ 0⤋