Helicopter Control Flapping

>> YOUR LINK HERE: ___ http://youtube.com/watch?v=1P84rLgB17I

Helicopter control relies on motion, or degrees of freedom, of the rotor blades. This video explains why the flapping degree of freedom is essential for controlling a helicopter. • Other topics covered are flapping hinge offset, advancing and retreating blades, the region of reversed flow, forward flight dissymmetry of lift, retreating blade stall and rotor blowback. • Other videos mentioned... • Helicopter Swashplate Control... • Helicopter Swashplate Control • helicopter rotor control - phase delay... • helicopter rotor control - phase delay • 00:00 Intro • 00:48 Rotor Degrees of Freedom • 01:36 Flapping in a Hover • 02:15 Rotor Coning • 03:13 Preconing • 03:42 Balance of Forces • 04:39 Rotor Tip Path Plane • 05:00 Flapping Hinge Offset • 05:46 Summary of Control Concept • 06:05 Forward Flight Considerations • 06:27 Advancing and Retreating Blades • 07:43 Region of Reversed Flow • 08:28 Forward Flight Dissymmetry of Lift • 11:27 Retreating Blade Stall • 13:16 Rotor Blowback

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