Regular and chaotic vibrations of an airfoil in supersonic flow

• Autorzy: Dżygadło Z. , Nowotarski I. , Olejnik A.
• Języki publikacji: EN

Abstrakty

EN

An airfoil in supersonic flow, having deformable nonlinear supports, is an aeroelastic system for which various types of bifurcation and regular or chaotic motions can appear. The airfoil has two degrees of freedom - that is, plunge dispalcement and angle of pitch displacement. The stiffness force and moment for those motions are assumed to be nonlinear ones. The airfoil is subjected to the pressure difference produced by its motion in supersonic flow. Types of bifurcation occurring in the system, limit cycles of self excited vibrations and regions of regular or chaotic motions have been investigated. The effect of some parameters of the system on the course of nonlinear vibrations has been studied.

Słowa kluczowe

PL

bifurkacja; drgania nieliniowe; drgania regularne płata; drgania chaotyczne płata; drgania samowzbudząjace; przepływ naddźwiękowy

• Wydawca: Instytut Podstawowych Problemów Techniki PAN
• Czasopismo: Journal of Technical Physics
• Rocznik: 1999
• Tom: Vol. 40, no 1
• Strony: 117--143

Twórcy

autor

Dżygadło Z.

autor

Nowotarski I.

autor

Olejnik A.

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