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scottb50
Guest
The four keys to efficient launches are re-usability, flexibility, rapid turn-around time and most important, available payloads. <br /><br />I propose a fully re-usable two stage concept; a vertically launched, flyback first stage and a second stage that stays in orbit and is used to build an infrastructure in LEO.<br /><br />Proven engines proven aerodynamics and the ability to transport an unlimited number of existing or future payloads. <br /><br />Using existing launch facilities and personnel would further reduce costs and development time while allowing time to develop simpler facilities and phase them in as they become available. <div class="Discussion_UserSignature"> </div>