<font color="yellow">probably the Virgin Galactic ship</font><br /><br />It looked like an evolution of the SS1 design. Rather than just a scaled-up version, I mean.<br /><br />Burt's designed and built a few of these "free-wing" type planes. So if he thinks he can use feather recovery to return from orbital speeds, then maybe he can. On the show, it was pretty clear the feathered tail booms did their job really, really well.<br /><br />The Shuttle orbiter "stalls" all the way through transonic, shedding velocity by generating heat. But it wants to fly, so there's alot of flight control going in to keeping the tail down. It spends lots of minutes in reentry, so the G forces are very low.<br /><br />With the Virgin Galaxtic planform we saw in the show, the tough part (it seems to me) from a flight profile standpoint, is that the feathered tail booms look like they force the craft into a vertical drop, with lots of G's getting generated. Recall that steely-eyed Mike Melville only had 2 to 3 G's on the way up, but 5 G's on the way back.