Aerodynamic Forces and Trajectories of Separated Stores Disturbed Flow Fields

Abstract

A vortex-lattice potential flow computer program capable of accepting nonuniform flow boundary conditions but previously restricted to incompressible flows with symmetry was modified to eliminate these restrictions. The program was structured in such a way that, after preliminary calculations of a purely geometric nature were performed one time for a given body, potential flow solutions for any set of boundary conditions on that body could be obtained in computer times measured in seconds rather than minutes. The aerodynamic characteristics of an M-117 bomb, represented by a network of 312 vortices, were calculated for uniform flow at a Mach number of 0.5 and were found to agree with wind tunnel measurements to within 10 percent, except for drag.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1973
Accession Number
AD0757932

Entities

People

  • P. W. Johnson
  • W. N. Macdermott

Organizations

  • Arnold Engineering Development Complex

Tags

Communities of Interest

  • Air Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Aerodynamic Forces
  • Air Force
  • Aircrafts
  • Boundary Layer
  • Central Processing Units
  • Computational Science
  • Computer Programs
  • Computers
  • Differential Equations
  • Equations Of Motion
  • Flow Fields
  • Incompressible Flow
  • Mach Number
  • Measurement
  • Nonuniform Flow
  • Potential Flow
  • Wind Tunnels

Fields of Study

  • Physics

Readers

  • Aerodynamics/Aeronautics.
  • Computational Modeling and Simulation
  • Fluid Dynamics.