Drag Coefficient Measurements for Typical Bomb and Projectile Fragments

Abstract

The FRAGHAZ computer program has been developed to predict the hazardous regions due to fragments produced by an accidental explosion of stored ammunition. Determination of these hazardous regions is based on computer simulations of fragment trajectories. Currently, the fragment drag coefficients used in the program are extrapolations of subsonic drag coefficients out to transonic and supersonic speed regimes. Errors in the Mach numbers effects of these fragments can influence the predicted range characteristics. This paper describes a series of wind tunnel and air gun tests conducted to measure the drag coefficients of representative bomb and projectile fragments over the entire Mach number range experienced in flight. Comparative trajectories are made to illustrate the differences between using the original and current drag coefficient data for the FRAGHAZ program.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1990
Accession Number
ADA527412

Entities

People

  • Miles C. Miller

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Guns
  • Ammunition
  • Blast
  • Coefficients
  • Computer Programs
  • Computers
  • Explosions
  • Flight
  • Flight Paths
  • Free Flight
  • Guns
  • Mach Number
  • Radar
  • Reynolds Number
  • Trajectories
  • Wind Tunnel Tests
  • Wind Tunnels

Fields of Study

  • Physics

Readers

  • Explosive Engineering.
  • Fluid Dynamics.

Technology Areas

  • Hypersonics
  • Hypersonics - Hypersonic Flow