Haha dis is prolly a stupid question?

Question

how do planes fly?!?!?! like stay up in the air and not fall . ???!?!?!?!

Answer 1

The wings support the airplane in flight.

As the wings of the aircraft move forward through the air, they pull the air above them downwards, so that there is an invisible but very large swath of air flowing downward behind the aircraft, called the downwash.  The shape of the wings (long, thin, and flat) and their slight upward tilt twist the air downwards into this downwash as they pass.  The force required to pull all this air downwards is enormous, and it creates an equal and opposite force that tries to push the wings upwards.  This latter force is the force that supports the wings (and the aircraft to which they are attached) in the air.

Answer 2

The force of the wings against the air. In a vacuum a plane can have the baddest engine made and go faster but without air it can't fly.

Answer 3

When air moves faster over an object than under an object, there is less air pressure over the object than under the object.  

The FORCE of the larger pressure under the object overcomes the FORCE of the smaller pressure on top of the object and pushes the object up.

Why it does not completely explain flight:

The top of a wing would have to be 50% longer than the bottom to generate enough lift for an airplane to stay in the air.  On a typical airplane, the top is only 2-5% longer.

Airplanes can do acrobatics - FLY UPSIDE DOWN!  If Bernoulli's Principle explained flight, flying upside down would not be possible.

Answer 4

Only if grammar counts.

Planes fly by magic.

Answer 5

flys by the principles of flight which include control surfaces, weight, balance, stability, the four forces(lift,weight,thrust,and drag)

it flys by the primary flight controls(elevator,spoilers,ailerons etc...)

Answer 6

actually the way wings are built air has farther to go over the top than over the bottom causing lift.. this makes no difference rite side up or upside down as the angle of attack in the inverted position will make the air think it is rite side up and still creat lift..

Answer 7

the wings on the plane are shaped and angled so when the air is split and flows over and under the wing, the pressure under it is higher and causes lift.

Answer 8

Where did you learn to spell?  What's up with the stupid language you are using?   Dis? Prolly?  You should learn to talk,  learn to spell and then come back and ask a question in English not some stupid unintelligent slang c**p.

Answer 9

uh,

the wings!

and air...

and other stuff.

the engine.

Answer 10

OK I'll try to say this slowly and as clearly as I can.

Bernoulli's Principle states that the faster air flows, the less pressure it has.

Ok now, how does a curved surface versus a flat surface make air flow faster?? The answer is because the air has to "meet up" at the same time at the end of the wing. Say two cars have to both be at the end of a road within 10 minutes. One of the cars' track is curved, like one big turn, while the other is straight. Since that car has a longer distance to travel, it has to go faster to keep up with it's competitor. So it goes faster and they both hit the finish line at the exact same time. Same thing with air. AND remember Bernoulli's law? The air OVER the wing goes faster, like the car in the example. So it has less pressure, according to the law.

So what does that mean?

Well let's just say the wing wants to go up because it wants to fill in the less pressurized spot with stuff so that everything is equal in pressure. It's just how pressure and objects work. Like how a pressurized cabin on a high flying plane wants to explode because the air inside wants to escape and make everything equal because the air outside is less dense. Hopefully the cabin though is sealed and it doesn't let any air out. Which allows the passengers and pilots to keep breathing.

So the wing wants to go up. It pulls it's plane up with it.

And about the thing someone said about the wing only being slightly curved at the top rather than 50%. Well that's possible because of speed. That's why slower planes (passenger jets, propeller planes, gliders) need more curvature while supersonic jets (military jet, concorde) only need a slight curve to stay up. Also you said something about flying upside down. Well yes the pilot has to adjust the elevators down a bit to keep the plane level. If not then the plane will just go pull up (which is down when upside down) and eventually crash. So the pilot compensates, basically.

Hope you got all that. if you have any questions just e-mail

[e-mail]

Answer 11

To prove the statement that the air moving faster over the top of the wing causes lift, tear a piece of typing paper into a 3 inch wide strip, hold one end of the paper between your thumb and forefinger allowing the rest of the paper hang down. Hold your hand close to your lips and blow air over the top of the strip of paper. The harder you blow, the more the paper will rise. Law: When you increase velosity, you decrease pressure. The increase in wind velosity over the top of the wing as the plane moves foward, causes a decrease in pressure, allowing the plane to lift into the sky.

That explains basically how a wing, because of it's shape, lifts the airplane into the sky. The upper surface of the wing is longer than the bottom of the wing, thus causing a differential pressure, called lift.

Answer 12

Check out the principles 1,2 and 3 in the upper right. Depends on how deep you want to go, but Bernoulli's principle ain't really it.

http://www.allstar.fiu.edu/

Answer 13

Planes do not fall out of the sky because the Wright Bros. figured out how to keep them up. Simples as that.

Answer 14

Hehe this is a good question. I think I could grind my fingers into dust writing the answer and it\'s better to use other resources and place the link here! =)I think there is a really good answer for your question:http://www.allstar.fiu.edu/AERO/airflylv...