Structural Design Issues for Electromagnetic Projectiles
Abstract
Many structural design issues in electromagnetic (EM) launch of projectiles can be analyzed by techniques used for conventional powder gun- launched projectiles. We give general design guidance and discuss analysis methods for assessment and management of EM launch loads. This information is distilled from design and analysis experience on saboted-rod kinetic energy (KE) projectiles to survive conventional launch environments. While the physics of EM launcher systems differ radically from conventional systems, many of the barrel/ projectile interactions problems are similar to those encountered in conventional systems over the past 15 years. Knowledge on solving conventional KE projectile problems may then benefit the EM community. In-bore loading characteristics of concern are: (1) large axial forces; (2) rapid initial rise times and 'jogs' in loading due to EM current changes; and (3) lateral loads. Transient finite element analyses of a 120-mm KE round subjected to EM and conventional loadings are presented. These help illustrate dramatic response differences between the two kinds of propulsion environments.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1991
- Accession Number
- ADA243851
Entities
People
- K. A. Bannister
- L. Burton
- W. H. Drysdale
Organizations
- Ballistic Research Laboratory