I've always wondered what kind of stresses and resulting deformations jet engines are subjected to when running.
I don't know the exact answer, but it's on the order of 0.100" (i.e. it's more than 0.010" and less than 1.00"). The more interesting part is that it's not just a simple linear stretching. The blades have a twist to them, and at speed they untwist, which is a strong contributor to the total change in length from 0 rpm to redline.