well, the problem is that some things don't scale well. I've actually been thinking of a way to do a truss, but the upper cap still had to be stable, so when I'm modelling that I can look to see how much inertia is required for that section, and see if it can be made weight efficient. With this really light structure, it's often not a problems with strength, but with stability. With heavier structure, you usually get stavility, but just need strength (not always, but generally)


A sinusoidal composite spar would be cool as well, but dang! It would be a manufacturing nightmare; so, the are a few things that need to be balanced.-- especially manufacturing, though, for instance, a constant cord wing would probably cost you too much weight.


I do like you flap idea. Is there any reason the flap would need to go up beyond 0 deg?



--- On Thu, 3/22/12, KarlS <This email address is being protected from spambots. You need JavaScript enabled to view it.> wrote:


From: KarlS <This email address is being protected from spambots. You need JavaScript enabled to view it.>
Subject: [Carbondragonbuildersandpilots] Re: CDII 3-part wing
To: This email address is being protected from spambots. You need JavaScript enabled to view it.
Date: Thursday, March 22, 2012, 5:12 PM



Does anybody else see a center section of the wing? This is more or less the concept to build the wing on I was thinking. Simple it is?
Thoughts?

groups.yahoo.com/group/Carbondragonbuild...inal&start=1&dir=asc

--- In This email address is being protected from spambots. You need JavaScript enabled to view it., "KarlS" wrote:
>
> I suppose it would require some rigging but it would depend on how far you took it apart. The young lady and gent did it on a slope.
>
> Pip pins and fork connectors wouldn't take that long. The tail boom could be pip pinned on as well if it was in a fork configuration and slid up onto the wing center section.
>
> You could do partial tear downs like the photo of the Mitchell A10 on the trailer I posted.
>
> Design folding wings and you're talking even faster.
>
> Here's a couple good shots of the dihedral and possibly some washout.
>
> groups.yahoo.com/group/Carbondragonbuild...inal&start=1&dir=asc
>
> and
>
> groups.yahoo.com/group/Carbondragonbuild...inal&start=1&dir=asc
>
> Karl
>
> --- In This email address is being protected from spambots. You need JavaScript enabled to view it., Kenny Andersen wrote:
> >
> > Right, so if you wanted to put a little dihedral you could do it at the joints outboard joints rather than at the center. In the end, I think the 3-piece wing would likely be a bit lighter, but then wouldn't you want the boom to disassemble? THat makes storing the wing a little more diffidult if you don't. I know the Arc separates the boom form the center section, which means you have to rig the controls every time you hook it up, no?