J. Phys. IV France
Volume 10, Numéro PR11, November 2000
Fourth International Workshop on Ram Accelerators
Page(s) Pr11-41 - Pr11-47
Fourth International Workshop on Ram Accelerators

J. Phys. IV France 10 (2000) Pr11-41-Pr11-47

DOI: 10.1051/jp4:20001105

Laser-propelled ram accelerator

A. 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