> 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
>
That proposition sounds good to me, meaning not a whole heck of a lot!
But once at Oshkosh, I asked Kim Prout why he didn't do that, and he's
said to be progeny of an actual aerodynamicist. He said probably +/-net
zero. Also, I think the Europa kit fairings are open at the back. Doc.
Sighard Hoerner says very bad. Don't do that. Negative pressure
streamline spills over the aft edge, looks inside the fairing and sees
roughly ambient pressure and no one home have to have any fun with.
Looks aft and sees unknown oblivion. So a pair of "vortex streets" are
created, requiring energy to spin. Like "marching in place" when I was
in the Army. :-)
Reg,
Fred F.
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