Reusable orbital launch system
The concept is based on a shuttle without pilot and launched by a carrier plane. Once in the air, the shuttle continues the ascent till it reaches its orbit and then launches its satellite. Then, it comes down in automatic pilot up to a landing ground to be recovered with the aim of a new launching. This technique allows to avoid any rejection of waste (tank, boosters) and to lower strongly the costs of launching.
(For more infos look : http://www.s-3.ch/