This report addresses position corrections made to airspeed and aerodynamic flow angle measurements on fixed-wing aircraft. These corrections remove the effects of angular rates, which contribute to the measurements when the sensors are installed away from the aircraft center of mass. Simplified corrections, which are routinely used in practice and assume small flow angles and angular rates, are reviewed. The exact, nonlinear corrections are then derived. The simplified corrections are sufficient in most situations; however, accuracy diminishes for smaller aircraft that incur higher angular rates, and for flight at high air flow angles. This is demonstrated using both flight test data and a nonlinear flight dynamics simulation of a subscale transport aircraft in a variety of low-speed, subsonic flight conditions.
Position Corrections for Airspeed and Flow Angle Measurements on Fixed-Wing Aircraft
2017
36 pages
Report
No indication
English
Aircraft airspeed system and method of cross checking airspeed
European Patent Office | 2020
|Aircraft airspeed system and method of cross checking airspeed
European Patent Office | 2020
|