Fiber Reinforcement of Gun Propellant
Abstract
The basis for this paper is the hypothesis that explosive reactions of gun propellant charges subjected to gross damage from attack by shaped charge (SC) or kinetic energy (KE) rounds are the result of catastrophic grain failures; i.e., that as a result of this type of event, the reactive surface area is increased by many orders of magnitude. Thus, given a propellant ignition by the impact of the SC or KE round, the gas generation rate will also be orders of magnitude greater than that for which the propellant was designed. To obviate this, it was proposed that propellant grains be made stronger through the addition of small percentages of high strength-to-weight-ratio materials; e.g., graphite fibers. It was anticipated that these reinforcing elements would assume the stress, and because of their extremely large elastic moduli would tend to limit the strain experienced by the propellant material. This in turn would tend to limit the damage, in particular the fracturing experienced by the propellant grains, and thus limit the gas generation rate. Representative fibers and propellants were selected, mixed, and tested for sensitiveness and mechanical properties. Response to standard sensitiveness tests was relatively unaffected by fiber addition; mechanical properties of a Low Vulnerability Ammunition (LOVA) propellant, CAB/RDX, were enhanced while those of a standard propellant, M-30, were degraded.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1985
- Accession Number
- ADA152296
Entities
People
- L. J. Vande Kieft
- W. W. Hillstrom
Organizations
- Ballistic Research Laboratory