The Gasdynamics of Perforated Muzzle Brakes

Abstract

In a study of perforated muzzle brakes, Nagamatsu, Choi, Duffy, and Carofano calculated the three-dimensional steady flow of a perfect gas through one vent hole and used the results to predict overall brake performance. The importance of the gas covolume is considered here by using the Abel equation of state. The brake performance calculations in the above study were limited to sets of holes of a single diameter. The merit of using sets of varying diameters is explored with particular emphasis on enhancing the structural integrity of the brake. In studies of conventional muzzle brakes, the gasdynamic efficiency, beta, has been found useful for comparing various brake designs and for scaling. A simple formula is presented which represents the efficiency of a wide variety of axisymmetric perforated brakes.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1988
Accession Number
ADA191054

Entities

People

  • G. C. Carofano

Organizations

  • United States Army Armament Research, Development and Engineering Center

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Aspect Ratio
  • Axial Loads
  • Diameters
  • Efficiency
  • Engineering
  • Euler Equations
  • Experimental Data
  • Geometry
  • Mach Number
  • Military Research
  • Muzzle Brakes
  • Pressure Distribution
  • Pressure Gradients
  • Security
  • Structural Integrity
  • Three Dimensional
  • Weapons

Readers

  • Computational Modeling and Simulation
  • Fluid Dynamics.
  • ballistics.