Seeing your vibration!

This is a really cool video of some guys using a strobe light to see the vibration in their frame.  Great idea!  I've got to try this.

...Tiger

[youtube]http://www.youtube.com/watch?v=dGif0Ny0Gi8&feature=endscreen&NR=1[/youtube]

 

Certainly is interesting ...

... and I'm sure in the correct hands the information this test might provide could be useful. But I notice a few problems with their methodology. First up is the bench testing, vibration on the bench is not the vibration we would see in flight. Second issue: is the way they had bolted down the aircraft. Not only is it not wise to bolt a rotary aircraft down in the first place as this introduces vibration and torsional effects you wouldn't see in flight but bolting down at the arms outer length in a fashion that restrict the arms up and down flexibility I would have to question. I would think securing the bird down closer to it's center would give a closer to real world result. Yup this kind of testing could be useful but they should have thought it out somewhat better.

It's only the way I see it
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