21st Congress of International Council of the Aeronautical Sciences, Melbourne, Australia, 13-18 September, 1998
Paper ICAS-98-1.4.3

UNCONVENTIONAL FLIGHT ANALYSIS

Rohacs J.
Technical University of Budapest, Hungary

Keywords: flight analysis

The flights out of conventional flight or load envelopes like motion of aircraft at high angle of attack, or after loosing the conventional control are the unconventional flights. The paper describes the problems and methods of analysis of the unconventional flight situations. It gives some recommendations for generation and development of the highly non-linear models of aerodynamic coefficients, shows the effects of non-linearities on the dynamics of the high angle manoeuvrable aircraft. The simulation of the aircraft unconventional motion is realised by application of the system of stochastic non-linear differential equations. The fully stochastic process of the aircraft real motion is approximated by Markov chain.

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