Supercritical Wing Flutter

Abstract

Transonic methods for correcting subsonic oscillatory aerodynamic influence coefficients (AIC's) based on the Doublet Lattice Method for use in flutter and dynamic response analyses of supercritical wings are developed and applied to a TF-8A flutter model and the YC-15II prototype aircraft. The effects of static aeroelasticity are included and evaluated. Reynolds number effects on test results are discussed. Correlation of improved methods showed good agreement with test results. For the two applications included, the steady corrections dominated the unsteady corrections. In the process of developing transonic corrections a new transonic lifting surface theory (currently two- dimensional) is presented, explored and correlated using the NLR 7301 airfoil. The effects of shock wave motion are included in the theory.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1978
Accession Number
ADB029329

Entities

People

  • J. A. Mcgrew
  • J. P. Giesing
  • K. Zuhuruddin
  • M. E. Schmidt
  • R. M. Pearson

Organizations

  • Douglas

Tags

Communities of Interest

  • Air Platforms
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Acoustic Waves
  • Aircrafts
  • Boundary Layer
  • Computational Science
  • Dynamic Pressure
  • Fluid Dynamics
  • Geometry
  • Mach Number
  • Measurement
  • Mechanics
  • Pressure Distribution
  • Shock
  • Swept Wings
  • Test And Evaluation
  • Three Dimensional
  • Two Dimensional
  • Wind Tunnels

Fields of Study

  • Physics

Readers

  • Aerodynamics.
  • Aerodynamics/Aeronautics.