One chapter deals with controlling helicopters near hover, and another offers an introduction to the stabilization of aeroelastic instabilities ... necessary for designing a good feedback control ...

Reports indicate that another Russian helicopter sustained damage during the same engagement ... despite the absence of a stabilization system or rotatable launcher. The missile’s solid propellant ...

The crash occurred when the helicopter lost stabilization mid-maneuver due to the uniform Martian terrain, which hindered its navigation system. Despite the crash, NASA considers Ingenuity a success.