Novel Approach for Angles Calibration of Air-Data Systems with Inertial Measurements.

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The flow angles calibration of air-data systems is based on the availability of high-accuracy reference measurements of angle-of-attack and sideslip angles. Typically, these are obtained by auxiliary sensors directly providing the reference angles (e.g., nose-boom vanes) or by analytically reconstructing them using calibrated airspeed measurements and inertial data. This paper proposes a novel approach in which the reference data for the flow angles calibration are obtained by inertial measurements only. The methodology, aiming to lower the development costs of advanced aircraft, is developed and validated with reference to the triple-probe air-data system of a Piaggio Aerospace Medium Altitude Long Endurance Unmanned Aerial System.

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