Please explain aerodynamics to a lame man. I want to understand how an airplane takes off and land.?

Answer 1

Here is the simplest explanation of how a plane defies gravity:

A plane uses its forward speed to deflect some air downwards using aerodynamic surfaces such as wings and tailplanes. Forcing high speed air down forces the plane to go in the up direction because of newton's 3rd law. This is how airplanes fly. It is not more complicated than that.

Answer 2

I am a pilot and had to learn this...so this is not a guess

There are two principles that allow a plane to fly the first one has to do with differing pressure on the top and bottom of the wing the and the other is Newton laws of motion.

The wing is made in the shape of an airfoil. This shape allows air to flow faster on one side then the other. The faster a fluid or gas is moving the less pressure it has. In an aircrafts wing the top is designed so the air has a longer path to go then the bottom side. This makes the air over the top move faster and have a lower pressure then the air below the wing. The higher pressure air under the wing then pushes up on the wing in an attempt to equalize the pressure pushing the wing and in turn the rest of the aircraft up. This accounts for about 60-65% of the lift the rest is accomplished by Newtons law stating that for evry reaction there is an equal and opposite reaction. The wing are placed reative to the aircraft on an angle this angle is called the angle of incedence. So when the wing is moving forward it also deflects some of the air down, in the action of deflecting this air down the opposite reaction is to deflect the aircraft up. These two aerodynamic principles allow a plane top become airborn. There is a lot more going on to keep in under control with the other control surfaces and the weight loading...but the wings are what get it up and down.

As for getting up and down this is accomplish by changing the relative wind to the wing, the angle the winf strikes the wing is called the "angle of attack" the higher the angle of attack the less lift a wing produces. So when the plane is climbing the "angle of attack" is low enough that the wing is producing more left then the weight of the aircraft. When the plane is coming down the angle of attack is high enough that the wing is producing less lift then the weight of the aircraft. So the aircraft decends.

Answer 3

When you "dive" into the water, you break the surface and then you have water on your back and belly. Each surface has water moving in the same direction, but in different "drags" depending upon the "shape" of your body. If your out of shape, your belly with really slow you down, if you have a six pack, you will smoothly transfer through the water, just like your back does.

Now, replace the water with air currents . . .

An airplane needs speed and aerodynamic body to stay in the sky. When it hits the proper speed, the body will lift from below, the wings will be adjusted to facilitate the lift and then your in the sky.

Answer 4

Airplanes have wings to fly and engines to push the airplane.
The shape of each wing create a different air pressure on the wing sides. Under the wing the pressure is much bigger and that why is lifting the wings.

Answer 5

This is a large topic, and cannot be answered very clearly in the space provided here. If anyone tries to answer it here, they are doing you a considerable disservice, because it will be oversimplified and excessively brief, and will probably just be confusing.

Instead, please go to the library, where you can sit quietly and absorb the information peacefully by reading about it. If you literally mean "lame," and it is difficult for you to get out to a library, you can find the information on the internet. Look up "aeronautics," "aeronautical engineering," or "how an airplane flies."

Answer 6

Hello,

That is a very good question. The answer is far more interesting than you may expect. Once you understand the answer you will have fun looking for this principle in many aspects of daily life.

Planes take off and land because of "Bernoulli's Principle"

http://en.wikipedia.org/wiki/Bernoulli's_principle

Answer 7

i believe the shape of the wing is key the air flow over top of the wing traveles faster creating lift versus slower air travel under the wing it could be the other way around

Answer 8

By controlling exhaust and wings