L.N. Nikiphorova

The expansion of the coaxial helicopter manoeuver capabilities demanded the study of flight dynamics at the modes with limited values of flight parameter and application for this purpose of the optimal control theory modern methods. The solution of most unclassic tasks, i.e. those whith constraints is based on the Pontrjagin maximum principle. To solve the helicopter optimization control task, as an unlinear object, the Krotov iteration method - the method of improvement is selected. Based on the developped approaches and on the system of mathematic models proposed by the author a package of applied programs is created to solve a number of practical tasks for definition of the helicopter manoeuver capabilities at the modes with the flight parameters limiting value, to examine complex flight modes and to provide for the helicopter flight modes automation. From a number of solved tasks the following are examined: determination the effect of the desing constrains upon the helicopter heading turn angle in hover and the Ka-32 helicopter autorotation landing task at different flight weights.

17th European Rotorcraft Forum 1991, Berlin

Conference Paper

englisch

21,0 x 29,7 cm, 20 Seiten

DGLR-Bericht, 1991, 1991-08, 17th European Rotorcraft Forum Proceedings; S.319-338; 1991; Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V., Bonn

NA

helicopters, ka-32 helicopter

Bestellbar

1991