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
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.
--
--
|