RC Plane Wing/Airfoil Study Part 3

thingiverse

<h1>Story</h1> <p>This long-overdue continuation of my airfoil study is a completed wing with full internal structural supports that will be lightened later. You'll notice there are no provisions made for flaps or ailerons, just functional performance test. I wanted to see how the printing and glue-up would go and how strong the wing would be afterward.</p> <p>Please excuse the poor gluing technique; I was using some different off-the-shelf CA and have since purchased good Medium CA with accelerator. The blend/curve into the washout from root-to-tip is visible in one of the pictures, and I'm not sure if I like using the Trailing Edge as the pivot point, but my research indicated that was preferable.</p> <p>This wing won't twist at all; it doesn't even flex. I printed in PLA for rigidity, but now I might give PETG a try. As sturdy as this thing is, if PETG can give it a little flex, that would be great!</p> <p>Oh, and the best part of this print? You don't need any special slicing software; straight-up Slic3r will work. No funky print settings either; just make sure your printer is well-calibrated, as these are all thin-walled prints.</p> <h1>Details</h1> <ul> <li-Length: ~800mm <li>Airfoil: 2412 <li>Root Chord: 260mm <li>Root thickness: 100% (so roughly 31mm) <li>Wingtip Blend: I think it was 80%, I'll have to check <li>Washout: 3* starting 1/3rd out from root. Pivot point on Trailing Edge <li>Wingtip: Hoerner </ul> <h1>NEXT</h1> <ul> <li>Flaps <ul> <li>As you can see, they are going to be a hybrid split-flap.</li> <li>I'm also going to engineer it such that those hybrid split-flaps will actually be a hybrid split/slotted flap if all things go well.</li> </ul> <li>I obviously still have to make the ailerons and flaps <li>As strong as the wing is glued together, I might still put a CF tube halfway through the wing. This would also make mounting to the fuselage a lot simpler. <li>Still have to finish the fuselage <li>I need to work on making better alignment tabs. The ones I have on there now are very simple. Sure, they work, but they aren't the best at getting the exacting alignment I want.</li> </ul>