To view this page ensure that Adobe Flash Player version 9.0.124 or greater is installed. f) Flying controls -the three planes -pitching about the lateral axis -rolling about the longitudinal axis -yawing about the normal axis -effects of cyclic, collective and rudder pedal inputs -stabilizer and rudder -control in pitch, roll and yaw -cross coupling, roll and yaw -effect of rotor configuration on control power g) Blade-stall -angle of attack -boundary layer and reasons for stalling -variation of lift and drag in the stall -movement of the centre of pressure h) Transonic effects on blades -shock waves -the reasons for their formation at subsonic speed -their effect on the handling and operation of the helicopter i) Limitations -manoeuvring and gust envelope j) Performance degradation -adverse on performance due to profile contamination -icing -rain -modification to and condition of the airframe 3. Helicopter Aerodynamics a) The helicopter and associated terminology -comparison with fixed wing and autogiro -plane of rotation -axes of rotation -rotor shaft axis -tip path plane -rotor disc -disc loading -blade loading b) The forces diagram and associated terminology - pitch angle -rotational airflow -induced airflow -relative airflow to the blade -angle of attack -drag-blade -total reaction – blade - rotor thrust -
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