A launch tube system has two concentric sleeves. An inner sleeve having
holes formed therethrough defines a launch tube, and an outer sleeve
surrounds the inner sleeve and is spaced apart therefrom. One or more
flexible bladders are disposed between the inner outer sleeves. When
filled with fluid, the flexible bladder(s) expands and extends into and
through the holes and into confines of the inner sleeve to thereby form
shock isolation for a projectile housed in the inner sleeve.