Dissymmetry of lift

Dissymmetry of lift in helicopter aerodynamics refers to an uneven amount of lift on opposite sides of the rotor disc.

dissymmetry of lift
Dissymmetry of lift is the difference in lift that exists between the advancing half of the rotor disk and the retreating half.

Dissymmetry of Lift
The unequal lift across the rotor disc area resulting from the difference in the velocity of air over the advancing blade half and the retreating blade half of the rotor disc area.
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This tendency is caused by the combined effects of dissymmetry of lift and transverse flow.

See also: Rotor, Lift, Helicopter, Flight, Pitch