How do force, lift, thrust, and lift apply to flight?

Question

I have an assignment and I need more information on the physics of flight and Bernoulli's principle.

Answer 1

Airplane wings are curved on top and flat on the bottom so that air flowing above the wing has to travel further to reach the back of the wing than does the air flowing beneath the wing. Bernoulli's principle states that as the velocioty of a fluid increases, it's pressure decreases. In flight, the air flowing around the wings acts like a fluid, so as a result, the air pressure below the wings becomes greater than the pressure above the wings, the difference being enough to overcome the force of gravity and the aircraft stays afloat but it has to be travelling at a minimum speed in order for this to work.

Answer 2

The wings are built in such a way that the air moves faster above the wings than below. This means that the pressure ABOVE the wing is lower then below the wing. Therefore a "lift" force will try 2 equalize the pressure and move to the area of decreased pressure, up. thus allowing the plane to fly. This is why planes have to have speed to fly, they need 2 make the air above the wing move fast enough to create enough of a pressure difference to generate enough of a "lift" force to create flight.

Wikipedia desribes bern. principle pretty well.

http://en.wikipedia.org/wiki/Bernoulli%27s_principle


hope ive helped.Good Luck!!

Answer 3

>>>>> Lift is the upward force that "lifts"

> the aircraft higher and higher as it takes off.



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Answer 4

If you don't have them, you don't have flight.