HYDROFOIL FLUTTER PHENOMENON AND AIRFOIL FLUTTER THEORY. VOLUME 4. FINITE ASPECT RATIO

Abstract

Measured decay rates and flutter speeds for two-degree-of-freedom hydrofoil models with finite aspect ratio are compared with those predicted by two-dimensional airfoil theory applied in a stripwise manner. The flutter speed of one of the experimental configurations is also predicted by means of three-dimensional lifting-surface theory. Both theory and experiment indicate that flutter speed increases as aspect ratio is decreased. However, the non-conservative discrepancy found previously between measured and predicted two-degree-of-freedom flutter speeds in two-dimensional flow persists in these three-dimensional results.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1966
Accession Number
AD0642746

Entities

People

  • Charles J. Henry
  • M. R. Ali

Organizations

  • Stevens Institute of Technology

Tags

Communities of Interest

  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Aspect Ratio
  • Center Of Gravity
  • Computational Chemistry Methods
  • Computational Science
  • Equations
  • Equations Of Motion
  • Fluid Dynamics
  • Frequency
  • Geometric Forms
  • Integral Equations
  • Kernel Functions
  • Lifting Surfaces
  • Lines (Geometry)
  • Resonant Frequency
  • Three Dimensional
  • Three Dimensional Flow
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Aerodynamics/Aeronautics.
  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Theoretical Analysis.