Aerodynamic Validation of Emerging Projectile and Missile Configurations

Abstract

The M549 projectile has been analyzed using two different aerodynamic codes. The semi-empirical AP05 code has provided a very fast way to obtain results. The CFX code, based on the numerical solution of the full Navier-Stokes equations, took about four hours for one data point. The comparison between the AP05 and CFX computed total drag coefficient shows a difference of about 30 percent in the high subsonic range, good agreement in the transonic region, but a difference of 22 percent at M=1.2, decreasing to zero at M=3.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 2010
Accession Number
ADA536478

Entities

People

  • Tan W. Chieh

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Aeronautical Engineering
  • Boundary Layer
  • Computational Fluid Dynamics
  • Computational Science
  • Computer Programs
  • Differential Equations
  • Equations
  • Fluid Dynamics
  • Fluid Flow
  • Geometry
  • Heat Transfer
  • Mechanical Engineering
  • Navier Stokes Equations
  • Partial Differential Equations
  • Projectiles
  • Three Dimensional
  • Weapons

Fields of Study

  • Physics

Readers

  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Fluid Mechanics and Fluid Dynamics.
  • ballistics.