Test Results from a Two-Stage Traveling Charge Liquid Propellant Gun

Abstract

Test data for a 40-mm fractional traveling charge (FTC) gun system are described. The system consists of a hybrid propulsion method using a solid propellant booster charge and a liquid propellant traveling charge. The purpose of the two stage propellant system was to create a traveling charge gun with a delay mechanism created by a separator piston between the solid and liquid charges. The data showed increased performance when compared to the Mayer Hart model, for projectiles less than 250 grams and charge to mass (C/M) ratios of less than 2. Tests fired at C/M greater than 2 with heavy projectiles yielded high pressures in the long liquid charges. The combustion of the second stage of the traveling charge produced waves that were tracked in a space time manner for one of the FTC rounds. The calculated wave speed gave reasonable agreement when compared with estimated sound speeds determined from chamber measurements in other regenerative fixtures.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1990
Accession Number
ADA224593

Entities

People

  • Bruce D. Bensinger
  • Irvin C. Stobie
  • John D. Knapton
  • Robert A. Pate

Organizations

  • Ballistic Research Laboratory

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Combustion
  • Engineering
  • Gunpowder
  • High Pressure
  • Hybrid Propulsion
  • Jet Propulsion
  • Liquid Propellants
  • Materials Laboratories
  • Materials Science
  • Measurement
  • Mechanical Engineering
  • Munitions
  • Pressure Transducers
  • Projectiles
  • Propellants
  • Propulsion Systems
  • Solid Propellants

Fields of Study

  • Physics

Readers

  • Electrical Engineering
  • Wave Propagation and Nonlinear Chaotic Dynamics.
  • ballistics.

Technology Areas

  • Space
  • Space - Hall-Effect Thruster