Tony, don't believe you want more drag! It is as welcome
as a hole in the head! The major feature of the Europa is
that it has low drag aerodynamics, so gives great
performance in terms of speed for given horsepower or fuel
usage. Admittedly slowing down a 'slippery' plane needs a
bit of forethought but certainly not extra drag. I suspect
the benefit of any change in the fairings will be
aesthetic principally, as Don Dykin knew a bit about
aerodynamics. One thing is clear, however, and that is
that you should not have leaky joints allowing air to
bleed from the hi pressure underneath the wing to the
upper surface. If your joints are not air tight then
taping them like every glider does will bring measurable
performance benefits.
Regards, David
Tony Renshaw <tonyrenshaw268@gmail.com> wrote:
> Gidday,
> Some of you may recognise these beautiful fairings of
>Fred Kleins, the Spitfire mod I call it. Freds
>instructions can be modified of course, and Ive done
>that by keeping them complete as one piece, and making
>them removable with a few minutes and a spanner. I am
>interested in input on what people think of the
>aerodynamic impact of me doing it this way though,
>whereas Fred kept the aerodynamic efficiency of the top
>section of the fairing by splitting it such that half
>stays on the fuse, half on wing an half on flap. This
>means that half the fairing articulates as the flap does,
>which means it has half the impact. I expect I will have
>less root lift obviously, and more drag, however I hear
>that the aircraft needs more drag, so Ill certainly get
>that. I have a little clamshell speed brake here, and
>possibly I might have a greater load on my flaps due to
>the drag, but the air can also get under the outer
>portion of the fairing and mightnt be too disturbed
>except for the portion completely under the fairing. If I
>dont like this setup, or decide to change it during the
>build, I can cut them to follow FKs intent. Meanwhile I
>would like to request input from others. Thanks
> Regards
> Tony Renshaw
> Sydney Aussie.
>
> P.S. I am unsure if my photos will be embedded in the
>list bounced emails. I dont get other peoples photos,
>which is irritating, and hope that others dont have this
>issue.
>
> P.S.S. or is it P.P.S. ? Thank you for the responses
>regarding my battery location question.
>
>
>
>
>
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