as opposed to the drag due to skin friction (parasite drag) and to turbulent eddies left behind as the airplane passes. Induced drag increases as the airplane slows down and the angle at which the ...

Compressed Air Supercharging has developed equipment that delivers extremely cold, dense air to the engine in an instant—and racers are getting results with it.

These twisters represent an energy loss and are strong enough to flip airplanes that blunder into them. Winglets produce an especially good performance boost for jets by reducing drag, and that ...