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Re: Europa-List: Maximum flap extension?

Subject: Re: Europa-List: Maximum flap extension?
From: Graham Singleton <grahamsingleton@btinternet.com>
Date: Wed, 6 Aug 2008 18:34:24

Ron
Thanks for the X-Plane data Ron, I must install my copy and learn to use 
it! Steep learning curve I fear :-(
increased flap deflection would therefore reduce the flap limiting speed 
too.
Graham

rparigor@suffolk.lib.ny.us wrote:
>   
> No matter what the absolute answer is, best to keep maximum flap extension
> speed as published.
>
> That said my partner Wayne built a model of the Europa XS in X-Plane. One
> mode is you can display dynamic arrows of stress. You can not believe how
> rapid the stresses on the outboard section of the wing grow when you
> exceed maximum flap extension speed! It begins that with full flaps the
> tip of the wing is lifting a little, then with increased speed the inboard
> section of the wing is lifting so much it requires that you lower the
> nose, then the outboard section of the wing now is creating negative lift
> and then if you increase speed further, the stresses look downright scary!
>
>
> Increasing flap angle would no doubt place greater loads as stated above. 
>
> Ron Parigoris



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