Using Bernouli's principle, explain how an airplane is able to lift up in the air.?

Question

science

Answer 1

Please have a look at this.

http://www.allstar.fiu.edu/aero/airflylvl3.htm

Maybe Bernouli's is a good pasta joint, but it really doesn't explain lift very well.

And as usual, Chris H is right.

Answer 2

Bernouli's principle states that faster moving air (or fluid) creates a lower pressure than slower moving air. Since the wing of an airplane is curved, the faster moving air is on top of the wing and the slower air is beneath the wing causing it to lift.

More info on links below:

Answer 3

I used to say that it was suction. However, my physics teacher always said "There is no such thing as suction, you are creating a partial vacuum." (Imaginge with a snobby south Georgia drawl for full effect.

He is right. As the aircraft moves through the air, the air is split into two streams. One flowing above the wing, and one below.

The upper portion of the wing has a curve to it and there for since the air above and the air below have to meet at the trailing edge of the wing, the layer of air over the wing moves faster than the lower wing air flow. This creates a partial vacuum. The air moving faster exerts much less pressure ON the wing, a lower air pressure is created. Essesntiall, to put into layman's terms, the plane is sucked up in the air. It's called Bernoullies principal. I imagine that you can find alot of discussion on that topic at your local library, on-line library, or go out and learn to fly! I'll guarantee you'll understand it then.

Good Question!

Answer 4

Using wikipedia, check out how a plane flies. Or how about doing a search on here or looking back for all the references to Bernouli's principal or even doing what your teacher intended and trying to do your own homework and develop some small additional mental capacities instead of asking this bunch of jokers?

Answer 5

using the longer path theory, assuming the wings of an aircraft is curved at the top and flat at the bottom, the air particles on top travels a longer distance than the air particles at the bottom in the same time, creating a pressure difference. This pressure difference "suck" the wing up, creating lift.

This is just a simple explanation, going indepth, many will find fault with this arguement.. anyway, this theory predicts lift creation fairly well =)

Answer 6

The faster-moving air above the wing has lower pressure than the slower-moving air below the wing (speeds of air flow relative to the wing.)

The air above the wing moves faster because of the angle of attack. It has nothing to do with the wing being curved. Otherwise, aerobatic aircraft would not be able to fly upside-down.

Answer 7

By creating the lowest pressure at the camber of the upper side of the wing and enough speed to move and create that phenomenon it creates a flight..

Answer 8

I too agree with Chris H's answer above. Furthermore, try out the more specialized "Education & Reference > Homework Help" in Yahoo Answers, the folks there are real helpful.

Answer 9

http://uk.encarta.msn.com/encyclopedia_761560121/Bernoulli's_Principle.html

The above link suggests it is a mistake to apply Bernoulli's Principle to explain wing lift.

The next two are more traditional.

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

http://www.bookrags.com/Bernoulli's_principle

Answer 10

A HA ! you will find many explanations on the theory of flight. All most all plausible. Though not applicable.