To view this page ensure that Adobe Flash Player version 9.0.124 or greater is installed. -necessity to achieve balance -methods of achieving balance e) Stability -aircraft axes and planes of rotation -static stability -dynamic stability -effects of design features on stability -inter-action between stability in difference planes -effect of altitude/ speed on stability -roll and yaw dampers rotor thrust, H-force CIVIL AVIATION REQUIREMENTS SERIES ‘B’ PART IX, ISSUE II SECTION 7 16TH JUNE, 2011 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 CIVIL AVIATION REQUIREMENTS SERIES ‘B’ PART IX, ISSUE II SECTION 7 16TH JUNE, 2011 |