Ignition Phenomena in Developmental, Stick Propellant, Combustible-Cased, 155-mm, M203E2 Propelling Charges.
Abstract
The US Army is currently developing a new top-zone propelling charge to replace the M203 Charge for the 155-mm, M198 Towed Howitzer. While the M203 Propelling Charge is a bagged charge consisting of granular M30A1 propellant and a centercore igniter, the new charge will feature stick propellant and a rigid, combustible cartridge case. The stick propellant is expected to eliminate pressure-wave problems; simplify igniter requirements; and, because of higher loading densities, allow use of a cooler, lower energy M31-type propellant, while the rigid case will facilitate automated handling and loading in future artillery weapons. During the course of development of the new charge, designated M203E2, a problem was experienced with high maximum chamber pressures when firing cold-conditioned charges. This report documents an experimental study commissioned by the Office of the Project MaNAGER, Cannon Artillery Weapons Systems, to investigate the interplay among the igniter, propellant, and case during the early portion of the interior ballistic cycle in order to identify potential contributors to and solutions for the problem. Of particular concern was the possibility of propellant fracture either caused directly by the brisance of the basepad igniter or resulting from charge motion and impact against the projectile base.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1984
- Accession Number
- ADA145283
Entities
People
- A. W. Horst
- T. C. Minor
Organizations
- Ballistic Research Laboratory