It was a paper study as far as I know, no hardware other than Energia and components used on existing spcecraft. I have seen no artwork of mission profiles, launch configurations, etc.<br /><br />Jon <div class="Discussion_UserSignature"> <p><em>Whether we become a multi-planet species with unlimited horizons, or are forever confined to Earth will be decided in the twenty-first century amid the vast plains, rugged canyons and lofty mountains of Mars</em> Arthur Clarke</p> </div>