The Aeroelastic Analysis of a Two-Dimensional Airfoil in Transonic Flow.

Abstract

A procedure is developed for the aeroelastic analysis of a two-dimensional airfoil in transonic flow. The fluid is assumed to be described by the unsteady low frequency small disturbance transonic potential equation for which a fully time implicit method of integration (LTRAN2) exists. Structural equations of motion for a three degree of freedom NACA 64A010 airfoil are integrated in time simulataneously with the unsteady potential equation using representative values of the structural parameters. The method is shown to be both stable and accurate, and the time response for several choices of initial conditions and reduced freestream density is presented. Oscillations with either increasing or decreasing amplitudes are found to result solely from the choice of initial conditions. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1977
Accession Number
ADA057505

Entities

People

  • Donald P. Rizzetta

Organizations

  • University of Dayton Research Institute

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Air Force
  • Amplitude
  • Cartesian Coordinates
  • Computational Fluid Dynamics
  • Computational Science
  • Computations
  • Dynamics
  • Equations
  • Equations Of Motion
  • Flow
  • Fluid Dynamics
  • Frequency
  • Mechanical Properties
  • Mechanics
  • Steady State
  • Transonic Flow

Fields of Study

  • Physics

Readers

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