Hereditary Models for Airfoils in Unsteady Aerodynamics, Numerical Approximations and Parameter Estimation.

Abstract

This report is concerned with the development of a general mathematical model for the motion of a two-dimensional airfoil in unsteady aerodynamics and with the study of numerical schemes for estimating parameters in this model. The equations of motion are a set of coupled ordinary and functional differential equations. Approximating Wagner functions are used to construct state space models that retain the hereditary nature of unsteady fluid flow. The results of some simple numerical experiments are presented including a preliminary analysis of wind-tunnel data. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1982
Accession Number
ADA118446

Entities

People

  • Eugene M. Cliff
  • John A. Burns

Organizations

  • Virginia Tech

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Aerodynamics
  • Aeronautical Laboratories
  • Air Force
  • Algorithms
  • Computational Science
  • Control Systems
  • Differential Equations
  • Engineering
  • Equations
  • Equations Of Motion
  • Government Procurement
  • Governments
  • Integrals
  • Numerical Analysis
  • Two Dimensional
  • Unsteady Aerodynamics
  • Wind Tunnels

Fields of Study

  • Mathematics
  • Physics

Readers

  • Aerodynamics/Aeronautics.
  • Computational Fluid Dynamics (CFD)
  • Regression Analysis.

Technology Areas

  • Space