IDENTIFICATION OF THE AERODYNAMIC COEFFICIENTS OF THE MULTIROLE MANEUVERABLE AIRCRAFT BASED ON UNSTEADY FLIGHT

摘要

The article describes the identification of theaerodynamic characteristics of the longitudinalmotion of the maneuverable aircraft on the timedomain by analysis of the data recorded in. Theaerodynamic coefficients are represented as thesum of the components. The method permits toestimate each component of lift coefficient orpitching moment coefficient by itself. Theaerodynamic wind tunnel database chosen asinitial approximation of components. Foranalysis of algorithm, convergence it is usedsome arbitrary values as initial approximationof components the aerodynamic. The algorithmbelongs to a class of Kaczmarz’s projectionalgorithms. It enables to compute points of nonlinearcoefficient avoiding additionalparameterization. It is presented results isprocessing of series of flights. Flight simulationwith the estimation aerodynamic coefficient andthe aerodynamic wind tunnel database wascompared.