Launchability of Base-Driven Electromagnetic Projectiles
Abstract
The launchability of penetrator projectiles at the velocities attainable in electromagnetic (EM) launch is examined. By assuming a base-driven model, theoretical expressions are derived for the ratio of projectile mass to the mass of the penetrator core (M sub T/M sub p) as a function of the ratio (lambda) of the length of the penetrator (l) to the unsupported length of the penetrator. This analysis relates the specific strengths and densities of the penetrator and sabot materials to lambda and M sub T/M sub p. It is shown that an electromagnetic projectile made from materials used in fielded penetrators and launched with a maximum acceleration of 150,000 G's can have an unsupported length of 5 to 7.2 cm dependent on the material yield criteria used. Using conservative design criteria similar to those used in the XM829 round, we show that a projectile of 2 kg mass having a 1 kg penetrator core may be launched in the base-driven mode without exceeding material properties.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1987
- Accession Number
- ADA189635
Entities
People
- C. G. Homan
- P. M. Vottis
Organizations
- United States Army Armament Research, Development and Engineering Center