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JetPilot
Joined: 10 Jan 2006
Posts: 1246
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 Posted: Thu Feb 16, 2006 7:02 pm Post subject: Control Surface Flutter ???? |
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Has anyone ever had control surface flutter in a Kolb ? Or the warning signs of flutter such as them starting to buzz at high speeds ? I am planning on putting electric trim tabs on all the control surfaces of my MK-III which will add a little weight to them on the trailing edge (about 8 ounces each), but im hoping it will not be enough weight to induce flutter. Any information or experience on flutter on Kolbs would be greatly appreciated.
Michael A. Bigelow
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"NO FEAR" - If you have no fear you did not go as fast as you could have !!!
Kolb MK-III Xtra, 912-S |
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John Bickham
Joined: 10 Jan 2006
Posts: 170
Location: St. Francisville, LA
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| Posted: Fri Feb 17, 2006 1:10 am Post subject: Re: Control Surface Flutter ???? |
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Experienced my one and only flutter on my third test flight. That was plenty for me. The ailerons on my Mark III went into serious flutter when I reached about 72 MPH indicated. It happens very quickly and can be a bit violent. The five seconds it took to recognize the problem, reduce power and climb a bit to bleed off speed was way to long when the whole plane is shaking. One might think that a firm grip on the stick could bring the flutter under control. Not so. Something is going to break if you try to stop it. Your arm or metal. It is very powerful and will scare the *#%$ out of you. Ordered the counterbalances that day. Kept flying till installed, just stayed away from that speed. No problem since, at or above that speed.
As far as the extra weight. I had none. I did use Aerothane which is a bit heavier.
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Thanks too much,
John Bickham
Mark III-C w/ 912UL
St. Francisville, LA
I know many pilots and a few true aviators. There is a distinct difference that I have the greatest respect for. |
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