Not forgetting that I=mr2, counterbalance weights in the tailplane leadng
edge, apart from being much heavier would have much less inertia, offering a
lower amount of resistance to flutter and/or its initiation.
Duncan Mcf.
----- Original Message -----
From: "Gilles Thesee" <Gilles.Thesee@ac-grenoble.fr>
Sent: Monday, June 25, 2007 5:09 PM
Subject: Re: Europa-List: Article on flutter, now attached
> <Gilles.Thesee@ac-grenoble.fr>
>
> William Harrison a crit :
>> Many thanks to Martin Le Poidevin at Flyer Magazine for letting us
>> distribute the article on flutter, which is now attached. It is PDF and
>> may be easier to read if you print it.
>
> William and all,
>
> Thanks for this very knowledgeable article.
> By the way, balancing control surfaces directly instead of using a bob
> weight on a balance arm is considered safer when practicable, especially
> if the weight is evenly distributed spanwise.
> I'm aware of at least two aerobatics airplanes that went down due to
> aileron balance arm attachment failure followed by explosive flutter. In
> one case the crew was able to bail out.
>
> Has anyone mentioned balancing each tailplane directly with lead in the
> leading edge? This would eliminate any possible slop on the balance arm
> attachment points and reduce wear an tear on the torque tube.
>
> FWIW,
> Best regards,
> --
> Gilles,
> http://contrails.free.fr
>
>
>
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