Definition of waiver. 1  1 : the act of intentionally relinquishing or abandoning a known right, claim, or privilege; also : the legal instrument evidencing such an act.
Roll, pitch and yaw. Roll, pitch and yaw are rotations along the natural axes of the helicopter (or any aircraft). A rolling movement is where the helicopter rotates along a line along its length using lateral cyclic inputs (aileron), eventually turning from right way up to inverted while maintaining the helicopter's heading.
Difference Between Helicopter and Chopper. Helicopter is a winged aircraft where the wing on the top is rotating unlike airplanes that have fixed wings that are stationary. These rotating wings allow and help the rotorcraft to take off, land, and to hover over a particular point in space.