A flight investigation of various stability augmentation systems for jet-lift V/STOL aircraft, using a variable stability helicopter, is reported. The main emphasis was placed on overcoming the directional divergence due to the unstable weathercock stability that occurs at low airspeeds, but short investigations of a roll stabilizer to reduce the pilot work load, and a pitch stabilizing device to assist the pilot to maintain attitude in the presence of an angle-of-attack instability, were included. Both visual and a limited number of simulated instrument flights were conducted. After testing several stabilizing devices, it was concluded that a lateral accelerometer operating through the yaw reaction controls yielded directional handling qualities in the 'acceptable-satisfactory' region. (Author)
A Flight Investigation of Various Stability Augmentation Systems for a Jet-Lift V/STOL Aircraft (Hawker-Siddeley P1127) Using an Airborne Simulator
1968
40 pages
Report
No indication
English
Aircraft , Fluid Mechanics , Vertical take-off planes , Simulators , Stabilization systems , Airborne , Flight testing , Stability , Malfunctions , Angle of attack , Roll , Pitch(Motion) , Simulation , Accelerometers , Yaw , Short take-off planes , Equations of motion , Control systems , Aerodynamic characteristics , Canada , V/STOL aircraft
Engineering Index Backfile | 1968
|Hawker Siddeley P.1127 V/STOL Strike Reconnaissance Aircraft
SAE Technical Papers | 1964
|