VERIFICATION OF THREE-DIMENSIONAL FLUTTER CALCULATIONS BY MEANS OF WIND TUNNEL TESTS ON A FLEXIBLE MODEL,

Abstract

The model reproduced the planform of a supersonic aeroplane. Its mass and stiffness characteristics were chosen to ensure that the tests provided a valuable check on the theoretical method used to predict the behaviour of the model: in particular, the frequencies of the model showed significant changes in the wind stream, the model approached a flutter condition, and its natural mode shapes included chordwise as well as spanwise deformation. The determination of the unsteady aerodynamic forces was based on lifting-surface theory. Comparison between the theoretical and experimental results justifies the method of calculation used, even though the model contained components such as nacelles and fuselage which were not included in the theoretical aerodynamic representation. (Author)

Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1966
Accession Number
AD0676709

Entities

People

  • L. Darovsky
  • R. Destuynder

Organizations

  • AGARD

Tags

DTIC Thesaurus Topics

  • Aerodynamic Forces
  • Airframes
  • Airplanes
  • Frequency
  • Fuselages
  • Lifting Surfaces
  • Materials
  • Physical Properties
  • Planform
  • Shape
  • Stiffness
  • Structural Components
  • Surfaces
  • Three Dimensional
  • Wind Tunnel Tests
  • Wind Tunnels

Fields of Study

  • Physics

Readers

  • Aerodynamics/Aeronautics.
  • Computational Modeling and Simulation

Technology Areas

  • Hypersonics
  • Hypersonics - Hypersonic Boundary Layers
  • Hypersonics - Hypersonic Flow