A new railgun configuration with perforated sidewalls is investigated. The motivation for this new configuration is the desire to minimize the detrimental effects of inertial and viscous drag at high velocities caused by the debris from the projectile and the gun wall trapped in the plasma armature. The test has been done on a 1.2-m long railgun with a 3.2-mm-diameter bore. Results for hydrogen pellet acceleration show that at high currents the perforated railgun outperforms the unperforated one. Combined with a newly designed cryogenic pellet generator and the first stage gas gun, a solid hydrogen pellet velocity of 2.46 km/s has been achieved on the 1.2-m railgun.
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering