how an aeroplane floats avoiding gravity?

Question

if u throw something it goes up but gravity pulls it back and u need 9.81A p/s to cheat gravity and obviously aeroplane doesn't generates dat much speed. so how it keep floating in the sky

Answer 1

Actually, an acceleration of an airplane exceeds 9.8m/s^s, but that is not what allows it to fly. Rather it's a combination of forward thrust (the acceleration) and lift. Lift consists of the sum of all the fluid dynamic forces on a body perpendicular to the direction of the external flow approaching that body. That is to say, if the wing surface area is proportionally larger than the mass of the plane, given enough thrust, the force of air pressure will lift the plane by countering forces. Hope that makes sense. Here's a link that may help.

http://en.wikipedia.org/wiki/Lift_%28force%29

Answer 2

It is the motion of air on the wing. The wings are shaped in such a way that it generate a low pressure on the upper surface, basically, it is like the wings were held up using a huge suction cup. To maintain this low pressure, the airplane has to move forward, and that is done either by the thrust of an engine, of by the force of gravity (when the plane glides). Actually, an airplane always glide, the motor is essentially there to glide it back up at the same rate as it is going down (or more when the plane is climbing) (so the person who stated that a plane would fall if the negine was to stop does not know what she is talking about, she apparenlty never heard of sailplane or hanggliders, which work on the SAME principle as motorized airplane, as far as lift is concerned).

The only heavier than air flying objects that "muscles" their way up against gravity are rockets and vertical jumpjets like the Harrier; all the other ones (including helicopter) use a fast moving airfoil to generate lift.

Answer 3

A airplane doesn't avoid gravity, since gravity is acting constantly on it. As the airplane moves forward the wings create a low preasure on top and a high preasure below creating a lifting factor

Answer 4

It's lift that keeps the plane in the air. Thrust is used to create airflow over the wings, and that airflow generates the lift.

In level flight, the lift generated by the wings exactly equals the weight of the aircraft.

Answer 5

a 747 and a380 no it quite is going to be an extremely little probability possibly like 2% look at the engines...thier on the wing. if thier nevertheless going the engines will suck up the water and turn the airplane. you have a greater effectual probability of a secure water landing in case you fying a 717 or md-80 the place the engines are interior the lower back and the physique of the airplane is flat and the engines are on the lower back of the airplane fixed so the airplane won't turn.

Answer 6

it's the shape of the wings, the top part is curved, making the wind slow down as it flies over it, and the under part of the wing is flat, making the wind speed faster. Also, the speed of the plane is important. They speed up down the runway and when they've generated enough speed and enough energy, they pull the plane in the air.

Answer 7

Airplanes don't float, they're motorized vehicles. If the engines stop working, the plane crashes really, really fast. Gliders work on a different principle (buoyancy, similar to ships), but they still have to land eventually.

Answer 8

Anti gravity devices...
How do you think people avoid gravity & float ?
Anti Gravity shoes...

Answer 9

the same reason a rock skips across the water that would ordinarilly sink

Answer 10

mass * drag < lift * thrust