Patent ID: 6609421
Filing Date: 2003-08-26
Classification: G01C,G01P

Abstract:
An air data sensor system comprising first and second probes forming a pair of probes symmetrically mounted on opposite sides of an aircraft, the probes each having ports for sensing angle of attack and pitot pressure, each of the probes including instrumentation for providing electrical signals indicating the pressure at each of the ports on the respective probe, and providing local angle of attack at the probes as a function of differential pressure between the angle of attack sensing ports and total pressure measurement sensed at the pitot port, and a third probe mounted to have an axis thereof substantially on a center plane of the aircraft in which angle of attack is measured, said third probe having a pair of ports with axes lying on a plane perpendicular to the center plane of the aircraft to directly measure differences in pressure at the pair of ports on the third probe caused by the sideslip of the aircraft, said third probe having communication instrumentation for providing correction factors to compensate for sideslip effects on local angle of attack and local static pressure measurements at at least one of the first and second probes due to sideslip.