[mikeash]

Are you familiar with Apollo 13's pogo oscillation? Money quote:

"The engine shutdown was determined to be caused by severe pogo oscillations measured at a strength of 68 g and a frequency of 16 hertz, flexing the thrust frame by 3 inches (76 mm)."

It was this close to ripping the whole rocket apart, but it managed to withstand some incredible shaking until the engine shut down.

[stcredzero]

Are you familiar with Apollo 13's pogo oscillation?

One of my friends in Houston was dealing with pogo in rockets specifically. So yes, I am familiar with pogo in general, and I had heard of it during the Apollo program.

[mikeash]

Neat. Apollo 13's is one of my favorite little-known facts, so I thought I would mention it. They came so close to being famous for a completely different (and equally, perhaps more, catastrophic) reason.