Flutter of Control Surfaces with Structural Nonlinearities

Abstract

Missile control surface systems often contain structural nonlinearities which affect their performance characteristics and flutter boundaries. Presented in this report are flutter analysis procedures which have been developed to evaluate the potential influence of these nonlinearities on control surface flutter. Three type nonlinearities, freeplay, preload, and friction, have been investigated. The describing function technique, which has found application in dealing with nonlinearities in automatic control systems, has been used to mathematically represent these nonlinearities during the investigation. A simplified representation of the aerodynamic loadings acting on the control surface has been assumed and the techniques have application for either a rigid or flexible control surface. Numerous examples of the application of the developed flutter analysis techniques are presented.

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Document Details

Document Type
Technical Report
Publication Date
Aug 31, 1977
Accession Number
ADA045221

Entities

People

  • Robert M. Laurenson
  • Robert M. Trn

Organizations

  • McDonnell Douglas

Tags

Communities of Interest

  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Aerodynamic Loading
  • Aircrafts
  • Astronautics
  • Boundaries
  • Control Surfaces
  • Control Systems
  • Corporations
  • Dynamic Pressure
  • Dynamic Response
  • Dynamics
  • Equations
  • Equations Of Motion
  • Fourier Series
  • Linear Systems
  • Nonlinear Systems
  • Physical Properties
  • Resonant Frequency

Fields of Study

  • Physics

Readers

  • Aerodynamics/Aeronautics.
  • Control Systems Engineering.