Types of V/STOL aircraft; helicopters: hovering, vertical ascent and descent,forward flight, autorotation; unpowered flaps: performance of wings with flaps, effectof sweepback, nose flaps; powered flaps: lift, pitching moment, drag, thrust and groundeffect performance; , propeller-wing interaction; ducted propeller in axial flight and atangle of attack; fan-in-wing configuration; thrust augmentation; ground-effectmachines (GEM); static stability and control of GEM.
