Flutter, Postflutter, and Control of a Supersonic Wing Section | Zendy

Pier Marzocca | Zendy; Liviu Librescu | Zendy; Walter A. Silva | Zendy

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Flutter, Postflutter, and Control of a Supersonic Wing Section

Author(s) -

Pier Marzocca,

Liviu Librescu,

Walter A. Silva

Publication year - 2002

Publication title -

journal of guidance control and dynamics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.573

H-Index - 143

eISSN - 1533-3884

pISSN - 0731-5090

DOI - 10.2514/2.4970

Subject(s) - flutter , supersonic speed , wing , section (typography) , aerospace engineering , flight control surfaces , aeroelasticity , aircraft flight mechanics , aerodynamics , structural engineering , geology , aeronautics , computer science , engineering , operating system

A number of issues related to the flutter and postflutter of two-dimensional supersonic lifting surfaces are addressed. Among them there are the 1) investigation of the implications of the nonlinear unsteady aerodynamics and structural nonlinearities on the stable/unstable character of the limit cycle and 2) study of the implications of the incorporation of a control capability on both the flutter boundary and the postflutter behavior. To this end, a powerful methodology based on the Lyapunov first quantity is implemented. Such a treatment of the problem enables one to get a better understanding of the various factors involved in the nonlinear aeroelastic problem, including the stable and unstable limit cycle. In addition, it constitutes a first step toward a more general investigation of nonlinear aeroelastic phenomena of three-dimensional lifting surfaces.

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