Nonlinear regular and chaotic dynamics of a helicopter

• Autorzy: Dżygadło Z. , Kowaleczko G.
• Języki publikacji: EN

Abstrakty

EN

A helicopter is a rotorcraft, which can be subjected, during its motion, to various types of vibrations. This paper presents selected results of analysis of these vibrations. It is carried out on the basis of the complete set of nonlinear differential equations describing the helicopter fuselage motion and all the blades motions. For the helicopter performing a steady-state flight, the control law for static autopilot is formulated on the basis of the method of motions separation. In the case of a ground resonance the forces and moments produced by a landing gear are taken into consideration. The flutter phenomenon is also simulated. Some results of numerical analysis are presented, which show that some oscillations are regular and others have rather a chaotic character.

Słowa kluczowe

PL

aerodynamika; analiza numeryczna; chaos; drganie; dynamika nieliniowa; dynamika chaotyczna; dynamika regularna; flatter; helikopter; równanie różniczkowe nieliniowe; ruch kadłuba; ruch obrotowy; ruch śmigła

• Wydawca: Instytut Podstawowych Problemów Techniki PAN
• Czasopismo: Journal of Technical Physics
• Rocznik: 2001
• Tom: Vol. 42, no 2
• Strony: 241--268
• Opis fizyczny: Bibliogr. 10 poz.,Rys., wykr.,

Twórcy

autor

Dżygadło Z.

autor

Kowaleczko G.

• Military University of Technology and Institute of Aviation S. Kaliski str. 2, Warsaw, Poland