Yet another Concorde question

[M2dude]

Gas Path
Yes, I've noticed that the GE90 shakes a bit when shut down, less so the Trent I've found.
wetbehindear
No honestly, it was just that, a very slight sideways bowing of the L/P and H/P shafts. This was slight of course, but still enough to cause a fair amount of vibration on a hot start. These shafts were relatively long inter-bearing, particularly in the 'hot bit', and uneven cooling after shut down caused this phenomenon. (I know it sounds weird, but it was a fact).

Dude