My thoughts were to blend from near the front of the wing, around the
flap hinge and blend back out near the back edge of the flap,
which as you say would in effect fence the outer edge of the flap when
the flaps are lowered, as well as =9Chopefully=9D a
meaningful
reduction in drag on that hinge.
Regards
craig
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com] On Behalf Of
ami-mcfadyean@talktalk.net
Sent: Sunday, 15 October 2017 9:19 PM
Subject: 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.pdf
which 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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