AERODYNAMIC INFLUENCE COEFFICIENTS FROM PISTON THEORY: ANALYTICAL DEVELOPMENT AND COMPUTATIONAL PROCEDURE

Abstract

A method is presented for calculating the aerodynamic influence coefficients (AICs) based on third-order piston theory with an optional correction to agree with Van Dyke's quasi-steady second-order theory. The AICs are computed assuming the airfoil to have a rigid chord with or without a (rigid chord) control surface. The influence coefficients relate the surface deflections to the aerodynamic forces through. The piston theory is limited to high Mach number (or high reduced frequency), but Van Dyke's quasi-steady correction extends the validity to some lower supersonic Mach number at low reduced frequency. The Aerospace IBM 7090 Computer Program Number HM11 provides the AICs from this theory in both a printed and an optional punchedcard output format. The program capacity is 25 surface strips, 15 Mach numbers, and 20 reduced velocities for each Mach number.

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Document Details

Document Type
Technical Report
Publication Date
Aug 15, 1962
Accession Number
AD0445924

Entities

People

  • Adam M. Kliszewski
  • Edith F. Farkas
  • Heathera. Malcom
  • William P. Rodden

Organizations

  • The Aerospace Corporation

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Air Force
  • Computational Fluid Dynamics
  • Computational Science
  • Computer Programs
  • Computers
  • Control Surfaces
  • Data Processing
  • Flow
  • Fluid Dynamics
  • Free Stream
  • Frequency
  • Geometry
  • Leading Edges
  • Mach Number
  • Punched Cards
  • Trailing Edges
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Aerodynamics.
  • Aerodynamics/Aeronautics.
  • Control Systems Engineering.

Technology Areas

  • Hypersonics
  • Hypersonics - Hypersonic Flow
  • Space
  • Space - Hall-Effect Thruster
  • Space - Orbital Debris