Archive for June, 2012
OSG pimped for the Slope #3
Ok, here we go again... Wing #3! But this one is going to FLY! One way or another. 
As it turned out, carbon spar, as I put it, is not an ideal way to enforce the wing. I was also way to sloppy while cutting, the blocks I cut the cores from were useless as a help for balsa sheeting.
Besides, I forgot to cut in a washout. Silly me, I *knew* it existed, but didn't think of it until Don asked me.
So - in the dumpster it goes. Well, not in the dumpster yet, have to salvage those carbon rods first.
Armed with the wire-cutting knowledge of the previous wings and this time taking VERY much time to get it as well as I possibly could, this is the result.
The cores still look rather bad near the TE, but I don't think one can actually do this job much better without better tools. Once covered with 1mm balsa, the TE ugliness disappears anyway.
The wing I was aiming at was S6063 (7%). What I ended with, and I *really* tried hard, is something resembling S6063, but not the S6063 itself, due to building inadequacies. GIven the similarity of profiles out there, I'm sure my wing now is a kind of a Frankenstein's Monster, flicked together from different profiles, scattered randomly all over the place.
At least it LOOKS nice and smooth, as far as I can tell; if I didn't know how important the utmost precision is when building a wing strictly to a given profile, I'd say it's perfect, except for the too thin TE, which doesn't look nice, but which is not so much thinner than the original...Continue Reading
As it turned out, carbon spar, as I put it, is not an ideal way to enforce the wing. I was also way to sloppy while cutting, the blocks I cut the cores from were useless as a help for balsa sheeting.
Besides, I forgot to cut in a washout. Silly me, I *knew* it existed, but didn't think of it until Don asked me.
So - in the dumpster it goes. Well, not in the dumpster yet, have to salvage those carbon rods first.
Armed with the wire-cutting knowledge of the previous wings and this time taking VERY much time to get it as well as I possibly could, this is the result.
The cores still look rather bad near the TE, but I don't think one can actually do this job much better without better tools. Once covered with 1mm balsa, the TE ugliness disappears anyway.
The wing I was aiming at was S6063 (7%). What I ended with, and I *really* tried hard, is something resembling S6063, but not the S6063 itself, due to building inadequacies. GIven the similarity of profiles out there, I'm sure my wing now is a kind of a Frankenstein's Monster, flicked together from different profiles, scattered randomly all over the place.
At least it LOOKS nice and smooth, as far as I can tell; if I didn't know how important the utmost precision is when building a wing strictly to a given profile, I'd say it's perfect, except for the too thin TE, which doesn't look nice, but which is not so much thinner than the original...Continue Reading
