Multizone Modular Artillery Propelling Charge Studies.
Abstract
Many of the requirements for the design of a multizone, combustible-cased, modular charge for howitzer applications that will minimize pressure waves at all zone levels without compromising performance are essentially unknown at the present time. An unsuccessful development program for a 155-mm, multizone bagged charge (XM211) highlighted the need for careful selection of the interrelated components that comprise a multizone charge. Multizone, combustible-cased modular artillery propelling charges were fabricated with both granular and stick propellants and were used in this study to investigate the influence of charge interzone permeability, propellant bed permeability, distribution of ullage, and igniter brisance on the two-phase flow, interior ballistic process, in particular, on the formation of pressure waves. Test charges used to study these phenomena were fabricated to resemble the modular charge configurations proposed for future artillery applications. Gun tests with these charges were conducted using M549 Projectiles fired from an M199 Cannon instrumented to measure chamber and differential pressures. Representative data for each series fired in the standard gun are presented in detail. For the situations investigated here, in which a wide range of loading configurations, boundary permeabilities, and ignition stimuli were studied the results demonstrated the superiority of stick propellant over granular propellant for this modular-charge application.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1985
- Accession Number
- ADA152654
Entities
People
- C. R. Ruth
- T. C. Minor
Organizations
- Ballistic Research Laboratory