Unsteady Aerodynamic Simulations of a Finned Projectile at a Supersonic Speed With Jet Interaction

Abstract

This report describes a computational study to understand the unsteady free-flight aerodynamics and flight dynamics of a finned projectile with jet control. Numerical simulations have been performed for this projectile with jet maneuver using an advanced coupled computational fluid dynamics (CFD)/rigid body dynamics (RBD) technique. The coupled CFD/RBD method allows time-accurate virtual fly-out simulations of projectiles and simultaneously predicts the aerodynamics and the flight dynamics in an integrated manner. The control is provided by a transient pulsed jet that is activated only once in the beginning for a fixed duration and then turned off for the remaining trajectory computation. Computed results show the actual time-dependent response of the flight vehicle and the resulting unsteady aerodynamics and flight dynamics with jet control for a variety of conditions.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 2014
Accession Number
ADA606268

Entities

People

  • Frank E. Fresconi
  • Jubaraj Sahu
  • Karen R. Heavey

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Angular Motion
  • Boundary Layer
  • Computational Fluid Dynamics
  • Fluid Dynamics
  • Fluid Flow
  • Free Flight
  • Geometry
  • High Performance Computing
  • Mathematical Models
  • Mechanical Properties
  • Physics Laboratories
  • Projectiles
  • Simulations
  • Three Dimensional
  • Trajectories
  • Unsteady Aerodynamics
  • Weapon Control

Fields of Study

  • Physics

Readers

  • Aerodynamics/Aeronautics.
  • Computational Fluid Dynamics (CFD)

Technology Areas

  • Hypersonics