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Old 06-03-2011, 06:19 PM   #21 (permalink)
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Originally Posted by aerohead View Post
beer,you'll want to keep an eye out for flutter.The steps will have a natural frequency and harmonics of that frequency in which they'll vibrate like a tuning fork.If not sufficiently stiff enough for dampening they can shake themselves apart in the vortex.
Yep, I'm aware of that, kind of the same affect which happened with "galloping gertie".
What I also want to keep in considoration, is that weak/thin pieces will vibrate quicker, and couse vortexes of there own.

So I've to make a HUGELY heavy bulky louvre to make it strong enough,
the weight will compensate for the lift generated. (just joking)

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