I heard a tale once that concord whilst during flight test did a barrel roll, but I only heard it once so .....
Also, provided that 1g is maintained through out the move (can't spell manouvre!) what is the limitation to doing a barrel roll?
I think the china SP went to about 90 degrees.
what about the space shuttle, that rolls onto its back, does it continue to roll as its flight progresses?
oh well, back to work I suppose
hay roll - roll another one