Abstract. The problem of the significance of aerometric information for piloting and ensuring the aircraft flight safety is considered, as well as the disadvantages of aerometric systems built based on autonomous receivers of the incoming air flow parameters from sensors distributed over the fuselage. The prospect of a variant of constructing an axisymmetric multifunctional receiver, which ensures the perception of the total and static pressure, as well as pressures, characterizing changes in the angular position of the velocity vector of the incoming air flow and determining the aerodynamic angles of attack and slip of the aircraft, is substantiated. A geometric model of a multifunctional receiver is presented, mathematical models of input informative signals are derived, and requirements for analytical models of the signals processing to determine the aerodynamic angles of attack and slip are formulated. Analytical models of the absolute and relative errors in determining the aerodynamic angles due to the instrumental errors of the used differential pressure sensors are presented. The obtained results provide a theoretical basis for design, study of characteristics and errors of aerometric systems for aircraft air signals measuring with an axisymmetric multifunctional receiver of incoming air flow parameters.

Keywords: airplane, aerometric systems, multifunctional receiver, informative signals, models, processing, errors

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