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.
Total drag is the sum of parasitic drag, profile drag, and induced drag.
When flying for endurance, operate the helicopter at the speed using the least amount of power.
The three primary forces that affect wind are pressure gradient force, Coriolis force, and friction.