Please answer it well. TRUE or False: Beyound the point of stall, the wing generates zero...

Please answer it well.

TRUE or False: Beyound the point of stall, the wing generates zero lift and the airplane falls from the sky.

Expert Solution

This is true statement. Reason is as below.

The magnitude of the lift generated by an object depends on the shape of the object and how it moves through the air. For airfoils the lift varies almost linearly for small angles of attack (within +/- 10 degrees). For higher inclinations, however, the dependence is quite complex. As an object moves through the air, air molecules stick to the surface. This creates a layer of air near the surface (called a boundary layer) that, in effect, changes the shape of the object. The flow turning reacts to the boundary layer, just as it would to the physical surface of the object. To make things more confusing, the boundary layer may lift off or "separate" from the body and create an effective shape much different from the physical shape. The separation of the boundary layer explains why aircraft wings will abruptly lose lift at high inclination to the flow. This condition is called a stall.

In the above figure you will see at the stall point lift becomes almost zero.

genius_generous answered 3 months ago

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