Prediction of Gust Loadings and Alleviation at Transonic Speeds.

Abstract

The transonic indicial theory is used to predict the effect of a gust on an airfoil at transonic speeds. The effect of operating two control surfaces is also modeled by the indicial method. The transonic indicial mehtod is linear in a strained coordinate system and superposition can be used. This allows the effects of an arbitrary gust and control surface deflection to be modeled simply if the indicial responses for the gust and each control surface are known. The computation time is small and, therefore, an optimization technique can be used to detrmine the best contorl surface deflections to alleviate the gust loading. Keywords: Transonic flow; Unsteady aerodynamics.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1986
Accession Number
ADA167748

Entities

People

  • David Nixon
  • Keh L. Tzuoo

Organizations

  • Nielsen Engineering & Research (United States)

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Boundary Layer
  • Classification
  • Computational Fluid Dynamics
  • Computational Science
  • Computations
  • Control Surfaces
  • Coordinate Systems
  • Equations
  • Fluid Dynamics
  • Free Stream
  • Molecular Dynamics
  • Optimization
  • Pressure Distribution
  • Steady State
  • Three Dimensional
  • Two Dimensional
  • Unsteady Flow

Fields of Study

  • Physics

Readers

  • Adaptive Control and Estimation with Uncertainty in Dynamic Systems.
  • Aerodynamics/Aeronautics.
  • Mechanical Engineering/Mechanics of Materials.