Abstract: A propellant tank can be used with a launch vehicle and can include at least one ring baffle having corrugated surfaces which are aligned circumferentially with respect to a longitudinal axis of the propellant tank. Folds of the corrugated surfaces may rise and fall in a first direction which is along the longitudinal axis. The ring baffle may be on an interior circumference of the propellant tank and the corrugated surfaces can extend in a second direction which is along a lateral axis of the propellant tank. Further, the ring baffle is of a predetermined width from the interior circumference of the propellant tank and can address slosh in a propellant used therein.

Abstract: A reusable module is affixed atop a reusable orbital vehicle (OV). Various configurations of the reusable module have identical external dimensions in the region of attachment to the OV to permit interchangeability. Different configurations can accommodate a variety of missions of different type and duration. A variety of cargo modules of different configurations allow cargo to be uplifted into orbit. In one embodiment, the cargo module is an unpressurized cargo module in which the cargo is exposed to the environment of space during the unloading process. The cargo module may also be a pressurized cargo module. In an alternative embodiment, the cargo module may include both a pressurized cargo module and unpressurized cargo module.