Nonlinear, regular and chaotic vibrations of an airfoil with a trailing and edge flap 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 instability, bifurcations and regular or chaotic motions can appear. The airfoil has three degrees of freedom - that is, plunge displacement, angle of pitch and angle of flap deflection. The stiffness force and moments for all those motions are assumed to be nonlinear ones. The airfoil is subjected to the pressure difference produced by its motion in supersonic flow. Stability and bifurcations 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 linear and nonlinear vibrations has been studied.

Słowa kluczowe

PL

aerodynamika; bifurkacja; chaos; drgania nieliniowe; drgania regularne płyty; drgania chaotyczne płyty; numeryczna analiza drgań; przepływ naddźwiękowy; równanie ruchu przepływu

EN

bifurcation; chaotic motions; chaotic vibrations; nonlinear vibrations; regular vibrations; supersonic flow

• Czasopismo: Journal of Technical Physics
• Rocznik: 2000
• Tom: Vol. 41, no 3
• Strony: 219-229
• Opis fizyczny: Bibliogr. 9 poz.,

Twórcy

autor

Dżygadło, Z.

autor

Nowotarski, I.

autor

Olejnik, A.

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