An aerospace vehicle comprising an airplane or spacecraft, operatively coupled to an airship balloon containing lighter than air gas adapted to elevate the vehicle. A control system adapted to deflate the balloon upon reaching a specific altitude by directing the gas to a propulsion system and high pressure gas chambers for powering the vehicle at a greater speed or to a greater altitude. The balloon can be retracted into the vehicle to achieve a better aerodynamic shape and further re-inflated for decreasing the speed of the vehicle upon reaching a destination.