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Aerospace Instrument-Making

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ESTIMATION OF STABILITY AND CONTROL OF AIRCRAFT SYSTEMS WITH THE USE OF MODELLING AND IDENTIFICATION
S.V. Nikolaev

The article describes a new method for evaluating characteristics of stability and controllability of naval aviation complex on the basis of a rational combination of methods of identification, modeling, and results of flight experiments. The method allows to obtain the mathematical model of the dynamics of the aircraft for subsequent use of the model on flight stands, for the purpose of simulation of the characteristics of stability and controllability. In the method includes: a new procedure of identification of the aerodynamic characteristics of the aircraft and new algorithmic techniques that can be used to visualize the dependence of aerodynamic coefficients as a function of angle of attack. First applied the approach to the identification of the longitudinal side of the channel test flight modes, and proof of its permissibility according to the flight experiment. The difference of this article from others is the detailed analysis of the problems in determining the characteristics of stability and controllability, identification results of the aerodynamic characteristics of longitudinal and lateral movement taking into account the thrust of the engine, a new special software that allows to reduce the time spent handling materials of flight tests, to improve the usability and accuracy of calculations, by creating a package of computer programs on the basis of application of modern technologies of programming. All the results obtained in this work confirmed the processing of materials flight experiments.
Key words: Identification,stability and control, aerodynamic coefficients, modeling.

Contacts: E-mail: nikozavr@mail.ru

Pp. 71-84.

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