Roll OrientationDependent Aerodynamics of a Long-Range Projectile

Abstract

A computational investigation was performed to determine the aerodynamic coefficients dependence on roll orientation for a low-aspect-ratio finned projectile. Navier-Stokes (CFD ) and inviscid (Cart3D) computational fluid dynamics flow solvers were used to characterize the aerodynamics of the flight vehicle. The results suggest that viscous flow phenomena become relevant when the lifting fins are oriented leeward on the projectile at moderate to high angles of attack. To improve our understanding of the flow physics associated with the observed phenomena, the generation and advection of the vortical flow structures produced by the fins were studied.

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Document Details

Document Type
Technical Report
Publication Date
Aug 14, 2020
Accession Number
AD1106758

Entities

People

  • Joseph D. Vasile
  • Jubaraj Sahu

Organizations

  • United States Army Research Laboratory

Tags

DTIC Thesaurus Topics

  • Abstracts
  • Aerodynamic Characteristics
  • Aerodynamics
  • Airframes
  • Aspect Ratio
  • Boundary Layer
  • Center Of Gravity
  • Computational Fluid Dynamics
  • Department Of Defense
  • Euler Equations
  • Flow
  • Flow Visualization
  • Fluid Dynamics
  • Fluid Flow
  • Geometry
  • High Angles
  • Mach Number
  • Military Research
  • Ordnance Laboratories
  • Orientation (Direction)
  • Physics
  • Physics Laboratories
  • Pressure Distribution
  • Projectiles
  • Reliability
  • Simulations
  • Viscous Flow

Fields of Study

  • Physics

Readers

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