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mppalmer(at)aol.com
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 Posted: Fri Oct 20, 2017 8:22 am Post subject: More on Wing Root fairings |
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Interesting. I've tried to "look" at Lavelle's Reno Winning GIII from photos. (Never seen if for real.) But I agree with you that if he's done anything about the flap/fuse junction, it's not obvious.
I'm surprised NASA couldn't find anything obvious on Ken's plane. How then did the GI guy in Barnstormers get 25 mph with his fence type fairings?
I do have my flaps reflexed, and I split the top of the fairing so that it could mate with the top of the flap. We see 165 = 170 Knots True (190-195 mph) at DA of 10,000' running LOP (7 GPH), so we've broken that barrier.
I put a few VG's near the front wing bracket. They moved the bug line on the horiz stab in about an inch or two. (They really need to be by the front of the rear window. But then they would have to be 2 inches tall and we would stick ourselves getting in and out of the plane.)
Since someone tried Spitfire fairings already, maybe I'll try the TBM type vertical fairing with horizontal fences.
(BTW, Robin asked earlier if I have tufted the fuselage. Answer: No. Can't see the tufts from inside the plane. I have oiled the fuselage. The oil traces a hump over the wing and then fades out about a foot after the trailing edge of the flaps.)
I am basing all my theorizing on the fact that we don't get bugs on the inside half of our horizontal stabilizer. What are other Glasair flyers seeing on their tails?
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westmeath(at)rcn.com
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| Posted: Sat Oct 21, 2017 3:36 pm Post subject: More on Wing Root fairings |
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I vaguely recall reading a while ago about a Glasair III builder changing the angle of incidence of the wing for better performance. A lower angle of incidence might result in less trim drag at higher speeds.
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