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Estimation of air data probe characteristics

This paper is dedicated to one of the promising directions in the development of aircraft air data systems that provide information about the altitude and airspeed parameters. The issues of the required air data measurement error as well as of further conversion of the measured air pressure by the pressure sensors are considered. In connection with the trend of eliminating of movable vane aerodynamic angles sensors, the paper dwells upon the rise of developments in the field of multifunctional air data probes which provide information not only about the total and static air pressure, but also about the aerodynamic angles of attack and slip. This paper describes the main sources of altitude and speed parameters measurement error and the ways to reduce such measurement error, mainly due to combined calibration of the air pressure probes and pressure sensors.