A Finite Element Mach Box Procedure for Flutter Predictions of Panels in Three-Dimensional Supersonic Unsteady Potential Flow

Abstract

A finite element formulation and solution procedure are developed for flutter predictions of rectangular panels with one surface exposed to three- dimensional supersonic unsteady potential flow. The effect of in-plane force is included. Each element is divided into several Mach boxes. The aerodynamic influence coefficients between each pair of sending and receiving boxes are computed by the method of Gaussian quadrature. The aerodynamic matrix is based on the numerically computed velocity potentials for all boxes.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1976
Accession Number
ADB017944

Entities

People

  • T. Y. Yang

Organizations

  • Flight Dynamics Laboratory

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Air Force
  • Computational Fluid Dynamics
  • Computational Science
  • Computer Programs
  • Equations
  • Equations Of Motion
  • Fluid Dynamics
  • Frequency
  • Geometry
  • Mach Number
  • Mechanics
  • Potential Flow
  • Resonant Frequency
  • Sea Level
  • Structural Mechanics
  • Test And Evaluation
  • Three Dimensional

Fields of Study

  • Physics

Readers

  • Calculus or Mathematical Analysis
  • Fluid Mechanics and Fluid Dynamics.
  • Structural Dynamics.

Technology Areas

  • Hypersonics