You picked a really strange counter-example with the V2 / Saturn V comparison. If there were ever a set of rockets that shared a lineage would be those. Von Bra

You picked a really strange counter-example with the V2 / Saturn V comparison. If there were ever a set of rockets that shared a lineage would be those. Von Braun was brought to the US specifically for his rocketry expertise and he designed the Saturn V. It's ludicrous to claim that the similarities were only skin deep. Regarding the flying wing, I note that the replica was built by engineers at Northrop, who as it happens also designed the B-2 bomber. So it seems Northrop was at least aware of the plane, and they probably did not discover it recently. The lag between WW2 and the introduction of the B-2 (wikipedia claims a first flight in 1989) can be explained by the need for advances in control for the flying wing design (thrust vectoring, fly-by-wire, etc). Edit. Compare also the YB-49, designed by Northrop (http://en.wikipedia.org/wiki/Northrop_YB-49 http://en.wikipedia.org/wiki/Northrop_YB-49) and first flown in 1947 and the YB-35 (http://en.wikipedia.org/wiki/Northrop_YB-35 http://en.wikipedia.org/wiki/Northrop_YB-35). Given Jack Northrop's interest in flying wing designs, I'd be very surprised if he was not aware and perhaps influenced by this plane.