The four aerodynamic forces are thrust, drag, lift, and weight.
Lift is created through the combination of Bernoulli’s principle and Newton’s 3rd law.
The lift formula or equation is CL ½ p V2 S.
Induced flow is the downward vertical movement of air through the rotor system due to the production of lift, often referred to as downwash.
Dissymmetry of lift is the unequal rotor thrust, or lift, produced by the rotor disc due to forward flight or wind.
Coning is an upward sweeping angle of the rotor blades as a result of lift and centrifugal force.
Effective translational lift (ETL) is when the lift generation from the rotor disc is more efficient due to increased aircraft speed or wind.
The rotor disc becomes more efficient within close proximity of the ground, so it takes less power to provide the same amount lift.