I've been long talking about tab in slot CNC cut XPS covered with carbon fiber... So kind of skypup, sgian dubh, or m19 squirrel like...And if built like a Skypup?
Might fit into a 30/40' seacan that way, would have to lift the tail to clear overhead though.A one piece wing can swing 180° on a pivot. The Van's RV-5 does. So did the Backyard flyer.
Old NACA docs seem to agree there is some interesting aerodynamics in that AR:3 range.Yeah, the aspect ratio 3:1 works well for RC models. I think AR-3 is the sweet spot for low AR.
I've never seen or heard of fike before, that's actually kind of neat. Off to google another rabbit hole.Since we’re still talking short, fat wings, do all of you remember the Fike?
I remember seeing one around the airport when I was younger. Here are some photos and three views (not many photos available so I included some pics of models).
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Fikes are neat and have been pretty popular as free flight models where the rules constrained wingspan. IIRC the real deal has an overhead stick and a geodetic wing with a steel tube fuselage and tail. I think the idea was to have a good little airplane for getting around Alaska, the cantilever wing and top stick being there so you could get in and out easily in full cold weather gear.I've never seen or heard of fike before, that's actually kind of neat. Off to google another rabbit hole.
Yes, a high CL at 1.27 AR. But it comes with high Cd. Not a concern to Zimmerman because he was designing for powered vertical lift.But like the UFO Arup and others show there's something in the 1.27 range too...
Looks like a raw sketch to me.This is one of my crazier ones. Just a random sketch, started off as a double delta with a equilateral triangle at the front and then a 30 degree isosceles at the back. That looked to have too low of an aspect ratio, so I chopped off the outside half of the semispan and then stretched that out the distance of the original base of the triangle. Then cut the last 1/4 off that to not have pointy tips. Looked pretty neat. So I put it in to X-plane just to see what it would fly like.
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Fooling with the controls and CG position I could make it fly. But not well. Flies pretty crappy actually. But it does look neat.