Angle of Attack and Stalls Everything that an airplane does in flight depends on the angle with which the leading edge of the wing meets the oncoming stream of air. This is also called the angle of attack. If you go too slowly while pulling the nose higher to try to maintain flight, the wing will stall. A wing can be stalled at any speed, including the airplane’s top speed. To accomplish a stall, all you have to do is to simply increase the angle of attack past its critical point, normally between 16º and 18º in a light airplane. Gliders have no engine but they still are able to fly. Their wings produce lift as a glider moves in the air just as the wings of a powered airplane do. Stalling the wing is what destroys lift not shutting off the engine power. Stall Warning Devices All modern airplanes have some sort of device to warn the pilot of an impending stall. The first is the aerodynamic warning that occurs when the entire airplane buffets, which is usually accompanied by the control wheel shaking in the pilot’s hands. Almost all airplanes have also an additional warning that is visual or aural. There is a sensor on the leading edge of the wing usually in the form of a little metal tab mounted upward, which moves and activates an electrical switch. This in turn, activates a horn in the cockpit or turns on a bright red warning light. Satish KS Author of “The Insiders Guide to Becoming A Private Pilot”
