Abstract: A spacecraft launch system includes a support assembly and a seat coupled to a hinge having a hinge axis. In operation, the support assembly and the seat rotate about the hinge axis to move the spacecraft from a horizontal position to a vertical position for launching. The launch system may incorporate an alignment technique that includes alignment members and actuators.

Abstract: A recoverable/reusable booster stage has a restartable center liquid-fueled rocket engine mounted in the aft portion of a vehicle body in alignment with the center axis of the body. The booster stage may also include two side liquid-fueled rocket engines mounted in the aft portion of the body in symmetrical relation to the center rocket engine. After booster stage separation, the center engine is restarted to direct the booster stage towards a recovery site.

Abstract: A two-stage wingless reusable aerospace vehicle having upper and lower stages that take off from a take-off area and separate at a separation point along a first trajectory. The separation forces are generated by air retained between the upper and lower stages, which is at a pressure higher than ambient pressure at the separation point. The lower stage is then propelled along a return trajectory to a landing area. After separation from the lower stage, the upper stage continues to an Earth orbit for deployment of a payload. After deploying the payload, the upper stage moves out of the Earth orbit, re-enters the Earth's atmosphere, and returns to the take-off and landing area. The upper and lower stages are powered by liquid oxygen and kerosene engines.