Fin Flutter Video

[Blake]

If you have not see it, check out the video on the following page, http://www.dph.com/vidroc/XPRS_2004/index.html .

[rocketkyle]

I've seen that one a few times. This is a very contraversial issue, because some people think it is the video camera being affected by mach conditions. One thing that seems to be against this theory is that nothing but the fins seemed distorted during flight, and the root of the fins were cracked afterwards. I personally think it was flutter, as he said in that page that he could bend the G10, although not much. Mach does some really weird things sometimes. It is an amazing video, and it shows what mach can really do to a rocket.

Kyle.

[Blake]

I was wondering if it was like the illusion that you get when you hold a pencil and wabble it up and down and make it look like it bends.

[rocketkyle]

there was some discussion over at the Rocketry Forum about this back in 2004. http://rocketryforum.com/showthread.php?s=&threadid=12440&highlight=
It has had some pretty good "discussion".