Quote:
On 2002-04-18 15:59, johnwitts wrote:
Lift is caused my a pressure difference between the top and bottom of the wings.
...which causes a thrust upwards?
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Yep.
Example: Picture two air molecules, one on top of another, right in front of a semi-circle with the flat side facing down. The top air molecule will take longer to travel over the curved surface, right? Because it takes longer, there's less pressure above the semi-circle, or, in the case of an airplane, the wing, than there is below it, which produces lift, or thrust upwards. Thrust is just the movement of the plane through the air.