Pressure Oscillations during the Interior Ballistic Firing of Regenerative Liquid Propellant Guns

Abstract

Pressure oscillation data from 25-mm and 30-mm regenerative Injection liquid propellant gun tests are examined and interpreted in terms of acoustical instabilities. Data from one test with the 30-mm suggest that the observed frequencies are consistent with sound speeds between 976 m/s and 1,009 m/s. For comparison, the thermodynamic computed sound speed, based on a BLAKE calculation and assuming a 10% heat loss, Is 1,134 m/s. Also, a mean sound speed computed from the RLPG model by Terence Coffee of the Ballistic Research Laboratory and assuming delayed burning is 967 m/s.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1992
Accession Number
ADA248622

Entities

People

  • C. A. Watson
  • J. D. Knapton
  • N. E. Boyer

Organizations

  • Ballistic Research Laboratory

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Artillery
  • Combustion
  • Combustion Chambers
  • Engineering
  • Frequency
  • Gun Propellants
  • Heat Loss
  • Jet Propulsion
  • Liquid Gun Propellants
  • Liquid Propellant Guns
  • Liquid Propellants
  • Materials Laboratories
  • Munitions
  • Propellants
  • Recording Systems
  • Standards
  • Weapons

Fields of Study

  • Physics

Readers

  • Plasma Physics / Magnetohydrodynamics
  • ballistics.