I would agree with that, having also made, painted and finished a set of
Factory-spec fairings, then decided not to fit them.
Instead I have made another set that have less surface area, better shape
and smaller frontal area. Haven't fitted them yet.
BanBi obviously don't bother , although their hinges are smaller.
Duncan McF.
----- Original Message -----
From: <beecho@beecho.org>
Subject: RE: Europa-List: Drag Reduction
>
> Hi Fred
>
> Do you think that fairings around the flap hinges are beneficial? I have
> made them but am undecided abut mounting them. The frontal area of the
> hinges isn't much and maybe the fairings will be adverse due to more skin
> friction?
>
> Tom Friedland
>
> -----Original Message-----
> From: owner-europa-list-server@matronics.com
> [mailto:owner-europa-list-server@matronics.com] On Behalf Of Fred
> Fillinger
> To: europa-list@matronics.com
> Subject: Re: Europa-List: Drag Reduction
>
>
>>...and am modifying the...a decent airflow in the area
>> of the ugly join between the leg fairngs and the wheel spats.
>>
>> The minor tiny mod merely attaches a small half circle of surplus
>> wheel fairing material, about 15mm tall, fixed to conceal the gap at
>> the bottom of the leg fairing.
>>
>> Patrick
>
> A definitive answer is either a) better; b) worse, or c) no change. :-)
> It
> actually may be possible that interference drag is increased, if you have
> a
> gear leg fairing. What I did is make an aerodynamic "spat" which seals
> everything and mitigates interference drag. Latter BTW is the effect of,
> especially with an acute angle of the gear leg, airflows of different
> velocities mixing and going turbulent at the junction.
>
> The "spat" the airframe manufacturers design here is probably by eye. It's
> so commonly that they may just assume the effect is, net, "proverse."
>
> Reg,
> Fred F.
>
>
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