Helmut
The Harrier as Engines said has a bicycle gear so cannot rotate during any sort of ground roll (think B-52, B-47 etc) because with a bicycle CG is so far in front of the rear leg.
For this reason the wing is mounted leading edge up on the fuselage to that it has 8 AoA during any ground roll thuis generating significant lift with a few knots. (I was not aware that this changed from the P1127 prototype days Engines - but my awareness has always been a bit variable)
This inability to shed wing lift when doing a conventional landing is the reason for some of the fun seen after high speed landings on old conversion movies in the days before two seaters or simulators. It is also the reason the outriggers did not break off when going sideways on some of them.
Last edited by John Farley; 6th Mar 2014 at 17:13.