Today's Message Index:
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1. 06:39 AM - Re: Flap trailing edge thickness (Larry PERRYMAN)
2. 04:41 PM - Re: Flap trailing edge thickness (robert watson)
Message 1
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| Subject: | Re: Flap trailing edge thickness |
21, 2004) at 10/28/2004 03:39:18 PM,
Serialize complete at 10/28/2004 03:39:18 PM
--> RV9-List message posted by: Larry PERRYMAN <larry.perryman@atofina.com>
The trailing edge will work just fine. The original trailing edge on RVs
was folded into the skin and much thicker. The idea of using an adhesive
on the trailing edge came from the user community, not from Vans. The idea
is to have a smooth transition for the air flowing over the wing. That
small difference will have little effect when flying. It is cosmetic more
than functional. It might matter if you are building a plane to be Grand
Champion at Oshkosh instead of a trusty flyer.
Make sure that you round the corners of the flaps and ailerons. I have a
gash in my leg from a sharp corner that I left on the left flap. You can
bet that it is gone now. It cut through a pair of bluejeans and into my
leg as I walked by. Round is better.
Regards,
Larry Perryman
Message 2
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| Subject: | Re: Flap trailing edge thickness |
--> RV9-List message posted by: robert watson <bob1629r@earthlink.net>
-----Original Message-----
From: Gerry Filby <gerf@gerf.com>
Subject: RV9-List: Flap trailing edge thickness
--> RV9-List message posted by: Gerry Filby <gerf@gerf.com>
GERRY You realy dont want a knife edge trailing edge bad for air flow.what you
might do is file all trailing edges squair. as i did. this way you can bring
edge thickness equal on all . and have a better final fit and finish. Bob Watson
N194BN 250 plus hr,s
Folks
I used T-88 expoxy between the skins and AEX wedge of the
trailing edges of the elevators, rudder and ailersons with good
results - very straight and even.
Today I completed the right flap and realized that I had a
thicker layer of epoxy between each skin and the AEX wedge.
Consequently the very edge of the trailing edge is a little
thicker than my previous efforts - I would say its 2.5 mm at
worst and generally 2mm along the span. My other effots were
about 1.5 mm.
I've trawled the lists and the Net but haven't found anything
definitive - is it a bad think to have that thick a trailing
edge ? I see some notes that you want a "knife edge" if you
can get it.
g
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Gerry Filby gerf@gerf.com
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