There are several rocket assited aircraft on that site. I was pretty suprised. There are tame bloopers of planes just turning into confetti, all the way to a 15'+ ws B-29 that drops a seperately r/c x-1 that is rocket powered. The x-1 propulsion wasn't that impressive only because I saw the other one first. Nevertheless, the b-29's sound is impressive by itself. Part 2 enjoy
http://www.youtube.com/watch?v=GtIL_VjBUGo