J. Phys. IV France
Volume 10, Numéro PR11, November 2000Fourth International Workshop on Ram Accelerators
|Page(s)||Pr11-41 - Pr11-47|
J. Phys. IV France 10 (2000) Pr11-41-Pr11-47
Laser-propelled ram acceleratorA. Sasoh
Shock Wave Research Center, Institute of Fluid Science, Tohoku University, 2-1-1 Katahira, Aoba, Sendai 980-8577, Japan
The concept of 'laser-propelled ram accelerator (L-RAMAC)' is proposed. Theoretically it is capable of achieving a higher launch speed than that by a chemical ram accelerator because a higher specific energy can be input to the propellant gas. The laser beam is supplied through the muzzle, focused as an annulus behind the base of the projectile. The performance of L-RAMAC is analized based on generalized Rankine-Hugoniot relations, suggesting that a superorbital muzzle speed is achievable out of this device.
© EDP Sciences 2000