A Simple Method for Predicting Muzzle Brake Effectiveness and Baffle-Surface Pressure

Abstract

The objective of this work is to produce a simple method for calculating load distributions on muzzle brake baffles during the firing process. With the load distribution known, the muzzle-brake effectiveness expression can be obtained and easily evaluated. The approach is to use a simple model for the muzzle-jet flow to predict the pressure on the baffle. The baffle is located in the supersonic jet core during much of the gun-exhaust cycle. This impinging flow onto the baffles is approximated by adopting a source flow model. Newtonian theory is used to predict the resulting pressures on the baffles. The theoretical results compare well with previous published experimental results. With this model, brake-effectiveness variation with parameter changes can be simply obtained for most gun systems.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1981
Accession Number
ADA102349

Entities

People

  • Kevin S. Fansler

Organizations

  • Ballistic Research Laboratory

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Efficiency
  • Ejection
  • Fluids
  • Gases
  • Gun Barrels
  • Guns
  • Instrumentation
  • Jet Propulsion
  • Load Distribution
  • Mach Number
  • Measurement
  • Method Of Characteristics
  • Military Research
  • Muzzle Brakes
  • Pressure Distribution
  • Projectiles
  • Weapons

Readers

  • Fluid Dynamics.
  • Marksmanship and Weaponry.
  • Military Engineering.

Technology Areas

  • Hypersonics