Maybe the attached would qualify as a fence.I made these years ago but never got
around to fitting or flying them, not believing that three 1/8" lap hinge plates
edge-on to the wind would create more drag than the greatly additional skin
and frontal areas of the fairing (although it has better form, with prospect
of pressure recovery).Maybe one day!
Duncan McF.
----Original Message----
From: ami-mcfadyean@talktalk.net
Date: 15/10/2017 12:18
Subj: RE: Europa-List: Re: Full trigear speed kit vs hinge fairings only
Can't find anything in the NACA library,
except:http://naca.central.cranfield.ac.uk/reports/1955/naca-rm-a55c30a.pdfwhich
applies to swept wings.Logically, there may be an effect in reducing the
spanwise flow over the outboard section of the (fowler) flap, when the flap is
deployed. But drag in that configuration is a definite advantage in getting the
a/c on the ground. Might be worth exploring to see if there is any detectable
decrease in stall speed?
Duncan McF.
----Original Message----
From: craigb@onthenet.com.au
Date: 14/10/2017 06:08
Subj: RE: Europa-List: Re: Full trigear speed kit vs hinge fairings only
While on the subject of the outer flap hinge, given its location, my
thoughts were it might be advantageous to turn that hinge faring into a
"fence" to help reduce spanwise flow.
What say yee gentlemen to that. Or is it a lot of work for no real gain
Regards
Craig
Kit 577, final prep before paint
-----Original Message-----
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com] On Behalf Of zwakie
Sent: Saturday, 14 October 2017 7:01 AM
Subject: Europa-List: Re: Full trigear speed kit vs hinge fairings only
jonathanmilbank wrote:
> I particularly like this quote from Bud: "The flap brackets (especially
the outers) are a huge drag source. So is the gear. Gear drag is
interesting. The legs and brake callipers actually produce more drag than
the tyres and wheels."
Exactly the two things I thought would be of interest to you and why I
posted the link (pure luck that I had read this article again earlier this
week, otherwise I would not have thought of it [Wink] )
--------
Marcel Zwakenberg
XS TG || 912ULS || PH-SBR
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=473511#473511
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