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Aerospace Instrument-Making

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AERODYNAMIC FORCES AND MOMENTS MATHEMATICAL MODEL OF THE UAV PARAMETERS DETERMINATION ACCORDING TO FLIGHT TESTS RESULTS
V.I. Akhrameev, E.V. Danilevich, E.S. Tsvetkov

The paper proposes a methodology to automatically determine the aerodynamic coefficients of a mathematical model of unmanned air vehicle (UAV) according to the results of full-scale fl ight research with the implementation of the modes dispersal-braking, inputs and reversals of control surfaces, which are automatically implemented by the control system of the UAV. The method of calculating the aerodynamic coefficients of the UAV based on the test results is based on the function of the Kalman filter of recursive re-evaluation of the state vector of the a priori known dynamic system. The method of identification of parameters of the UAV mathematical model presented in the article can be applied to clarify the aerodynamic coefficients of the UAV mathematical models that are suitable for the initial setting of the autopilot and the system of stabilization and stability of the UAV.
Keywords: unmanned air vehicles, control system, aerodynamic characteristics, aerodynamic forces and moments coefficients, methods of flight tests, identification of characteristics by results of flight tests.


DOI: 10.25791/aviakosmos.06.2019.675

Contacts: E-mail: akhrameev_vi@mail.ru

Pp. 27-37.

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