Conveners
8.1 Electromagnetic Launch
- Mark Crawford (Los Alamos National Laboratory)
ASELSAN Inc. has been conducting experimental research on electromagnetic launchers since 2014. A 1 MJ first generation and 3.25 MJ second generation Pulsed Power Supplies are built and tested with 25 mm x 25 mm square bore EMFY-1 Electromagnetic Launcher at open area test range by ASELSAN. In 2018 ASELSAN constructed a laboratory in Ankara to conduct experiments up to 2 MJ muzzle energy. For...
The induction type multi-stage coilgun with pulsed power supplies has been widely developed to apply on the missile launcher system as cold-launching technology using electromagnetic forces. In this coilgun system, the electromagnetic energy generated by pulsed power module is transferd to the kinetic energy to accelerate the armature coil equipped with a projectile. It has advantages that the...
Due to the large muzzle velocities achieved by railguns, they are especially usefull to further extend the reach of artillery systems. At gun exit velocities of about 2.5 km/s a heavy artillery round is able to cover distances far above 100 km. In contrast to conventional, explosively driven guns, railguns apply constant acceleration pressure over the full acceleration length, resulting in a...
A 3-axis custom built probe is utilized to measure the diffused magnetic field magnitude inside a shielded structure with walls composed of conductive and magnetic materials. The probe has a sensitivity of 2 mV per tesla per second at a spatial resolution of approx. 0.3 cm3 per coil. The probe’s temporal resolution of 1.5 microseconds is more than sufficient to capture the sinusoidal magnetic...
In this paper, the results of a study of the parameters which influence the efficiency of an induction coilgun are presented. Efficiency in the present context is defined as the ratio of final kinetic energy ($\frac{1}{2}$m$v^2$) of the projectile to the total input electrical energy of all the stages taken together ($\sum_{k=1}^{n} \frac{1}{2}C_{k}V_{k}^2$), where $m$ is the mass of the...
We present early results for a novel flyer acceleration method using pulsed power. Flyer plate impact is of interest for material equation of state research, and more recently for a novel fusion ignition scheme being developed at First Light Fusion Ltd. Generation of the desired planar shock is dependent on maintaining a symmetric flat flyer face, with the front surface of the flyer in a solid...
Electromagnetic launchers using pulsed power are more advantageous than chemical guns because they use electromagnetic force to accelerate amateurs at a higher velocity. The railgun can accelerate a light projectile to hypervelocity, while the induction-based coilgun is used for accelerating heavy projectiles (weighing hundreds of kilograms). The induction-type coilgun systems are therefore a...
