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Richard Pike
Joined: 09 Jan 2006
Posts: 1671
Location: Blountville, Tennessee
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 Posted: Thu Feb 25, 2010 1:47 pm Post subject: Modified wing tip shape |
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Hey Jack B. Hart, last year on Aug 26, you posted a link to an interesting study on wing tip shapes.
http://naca.central.cranfield.ac.uk/reports/1923/naca-report-140.pdf
It made sense, would be as easy to make as the regular tip, and if it didn't work, probably would'nt hurt. The other link you posted was along the same line, even more interesting, but has since been taken down.
Ed liked the idea, the rebuild process is still coming along, and here is the first tip. Not as radical as what the link said was ideal, but didn't require any major mods either.
Just so you'll know somebody out here is paying attention...
Richard Pike
MKIII N420P (420ldPoops)
PS: No, the trailing edge is not curved, that is the wide angle lens effect.
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Dana
Joined: 13 Dec 2007
Posts: 1047
Location: Connecticut, USA
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| Posted: Thu Feb 25, 2010 3:50 pm Post subject: Modified wing tip shape |
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At 04:47 PM 2/25/2010, Richard Pike wrote:
| Quote: | Hey Jack B. Hart, last year on Aug 26, you posted a link to an interesting study on wing tip shapes.
http://naca.central.cranfield.ac.uk/reports/1923/naca-report-140.pdf
It made sense, would be as easy to make as the regular tip, and if it didn't work, probably would'nt hurt. The other link you posted was along the same line, even more interesting, but has since been taken down.
Ed liked the idea, the rebuild process is still coming along, and here is the first tip. Not as radical as what the link said was ideal, but didn't require any major mods either.
Just so you'll know somebody out here is paying attention... |
I'm doing the same thing, with a 20° rake, for my biplane project:
<http://www.homebuiltairplanes.com/forums/attachments/light-stuff-area/6002d1267057084-tip-ribs-wingtip.jpg>
-Dana
do not archive
--
Arrest rate for Washington DC police officers: 19 per 1000
Arrest rate for New York City police officers: 3 per 1000
Arrest rate for Florida concealed handgun permit holders: 0.9 per 1000 [quote][b]
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williamtsullivan(at)att.n
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| Posted: Thu Feb 25, 2010 3:54 pm Post subject: Modified wing tip shape |
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Richard- Did you lengthen the trailing edge, shorten the leading edge, or both? What about the flaps and ailerons?
Bill Sullivan
Windsor Locks, Ct.
FS 447
39 degrees and raining
[quote][b]
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Richard Pike
Joined: 09 Jan 2006
Posts: 1671
Location: Blountville, Tennessee
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| Posted: Thu Feb 25, 2010 7:19 pm Post subject: Re: Modified wing tip shape |
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[quote="williamtsullivan(at)att.n"]Richard- Did you lengthen the trailing edge, shorten the leading edge, or both? What about the flaps and ailerons?
Bill Sullivan
Windsor Locks, Ct.
FS 447
39 degrees and raining
Cut 1.75" off the leading edge where it stuck out past the last rib, the trailing edge is stock, not going to modify the ailerons. FSII=no flaps.
This was a donor wing that only needs a little work, bought a basket case in Florida for parts. Tomorrow will be pulling out the steel root rib, it has some rust on it, need to make sure it is not rusty where it slips inside the trailing edge.
Ed's original left wing ought to be in pretty good shape, the crash got the tip and a little bit of the trailing edge, will probably pull the cover off next week and get started on it.
Richard Pike
MKIII N420P (420ldPoops)
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