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Releasing designs and mill files.

 

Still waiting on parts to make the EPP moulding machine. It will probably be some time away before I can mould these wings.
In the meantime I have put the original designs in this torrent file.

They include the 3D model with the foil sections and twist angles. The 3D’s of the plane and packaging are organised into 1200 * 600 * 50mm EPS sheets ready to mill.

I have also included the .tap mill files to work with a Mach3 controller in mm. There is a text file at the top of the mill folder with the details of what tools to use when and how to go about it. I had not intended it to be released to the public, so if it’s a bit confusing then let me know and I’ll try clean it up to be more machinist friendly.

Cheers,

Dion.

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Wing, fin, sail – same basic concepts.

Whether it’s a wing, fin or sail, they all have the same basic features except they are just perpendicular to each other.  Actually, include hydrofoils into that. Yes there is a compression thing to think about in gasses, but we can half ignore compression until the basics are right.

Here’s a swept forward surfboard fin designed under similar concepts to the wings.

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Testing Gemot V2.5 in stronger wind.

Testing the wing out in slightly stronger wind. Shouldn’t really be a problem. The lift to drag ration seems to remain about the same in the 10-40kt range. Didn’t run the calcs on anything more as yet. Either way it’s proving that V3 should work well. With the variation in the spanwise shape it modified the elevons to the point that the insides were not as per design (foil distortion) and it made a noticeable difference, but this will also be fixed in V3.