Today's Message Index:
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0. 10:05 AM - What's Your Contribution Used For? (Matt Dralle)
1. 07:32 AM - Re: N2RN pietenpol aircamper for sale (tools)
2. 09:53 PM - Re: Wing ribs (taildrags)
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| Subject: | What's Your Contribution Used For? |
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| Subject: | Re: N2RN pietenpol aircamper for sale |
Unfortunately I was overseas... Keep an eye open though, next time!
Tools
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=462662#462662
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Just to add to this discussion, a bit about the Riblett airfoil nomenclature.
I'm no expert on the subject, but my understanding is that the "612" is Riblett's
GA30-612 (and modifications thereof). By Riblett's terminology, the "30"
means that the maximum thickness occurs at 30% of the wing chord or 18" aft of
the wing leading edge for the 60" chord Piet wing. The "-12" indicates that
the wing depth (thickness) is 12% of the chord, or 7.2". The stock FC-10 airfoil
is about an inch less deep than the 612 and it also has undercamber, which
the Riblett does not. Other considerations aside, including performance, a deeper
spar can carry the same loads with lighter construction than a shorter one...
if properly engineered. A thicker wing section can provide more room for
larger fuel tanks or a baggage compartment, if that's a consideration.
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Oscar Zuniga
Medford, OR
Air Camper NX41CC "Scout"
A75 power, 72x36 Culver prop
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=462742#462742
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