Common
Lift-induced drag
Type of aerodynamic resistance against the motion of a wing or other airfoil
Lift-induced drag
Lift-induced drag, induced drag, vortex drag, or sometimes drag due to lift, in aerodynamics, is an aerodynamic drag force that occurs whenever a moving object experiences aerodynamic lift. This drag force acts on the wings of aircraft, birds and insects whenever lift is being generated. It also acts on propellers and rotors whenever thrust is being generated. It acts on the horizontal stabilizer of an aircraft and an airfoil installed on a racing car. It is symbolized as D i {\textstyle D_{\text{i}}} , and the lift-induced drag coefficient as C D , i {\textstyle C_{D,i}} . For a fixed-wing aircraft in straight flight, the lift-induced drag is directly proportional to the weight of the aircraft. However, it is inversely proportional to its airspeed so as the speed of the aircraft...
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