In ’in-tube propulsion,’ that is the combination of conventional rocket propulsion and ballistic range operation,propulsion performance can be enhanced with increases in thrust due to spatial confinement and in payload capa-bility because propellant can be placed off board a projectile.This paper describes proofed concepts of in-tube propulsion by using repetitive laser pulses. ’That is the combination of conventional rocket propulsion and ballistic range operation, propulsion performance can be enhanced with increases in thrust due to spatial confinement and in payload capa-bility because propellant can be placed off board a projectile. This paper describes proofed concepts of in-tube propulsion by using repetitive laser pulses.