Single-seat ultralight puddlejumper: the "Carbonmax"

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stanislavz

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Kind of other thinking out of the box for non-foam leading edge. Motiwation from video - it is sturdier, than 200gsm foam 200gsm. :


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Victor Bravo

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Some really clever person in the homebuilt glider business (ahem...) should probably speak with her about making molds off of that motorglider and creating a kit version.

I'm sure there are several improvements and tweaks that can be made (based on her experience with the prototype), but overall it seems that this is a perfectly workable example of a modern AS-K14.
 

BoKu

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Some really clever person in the homebuilt glider business (ahem...) should probably speak with her about making molds off of that motorglider and creating a kit version...
You should really look at the aircraft itself. I admire Sonja's incredible innovation and resourcefulness, but her work has a certain organic nature to it. Which is perfectly fine in a one-off, and I don't think she ever intended it to be more than that. It works perfectly well and the air doesn't care about straight lines. But it would be kind of a tough sell in a production unit.
 

Jay Kempf

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Yeah but for production you would have to build tools anyway. So you would take some license and so it could be lofted a bit more... aggressively towards smoothness then.

The overall concept is great and the performance speaks for itself. Met Sonja at Oshkosh some years back. Have some colleagues in common with her. Nothing but praise all around as to her engineering prowess.
 

dana62448

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There was a thread recently regarding moldiness D-tubes.
It mentioned Rol Klingberg and misrepresented his work.
Rol has spent several years and successfully designed a method for flawless male mold D-tubes.
He deserves a shout out and credit for his perseverance.
I was appreciative enough to become a Patreon donor to his project.
I'm sure he saved me a year and several pounds.
He has multiple YouTube videos, but this one summarizes his technique.
I have begun my ultralight wing using this D-tube technique.
Thank you Rol:

Phil Dorothy
 

stanislavz

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There was a thread recently regarding moldiness D-tubes.
It mentioned Rol Klingberg and misrepresented his work.
Rol has spent several years and successfully designed a method for flawless male mold D-tubes.
He deserves a shout out and credit for his perseverance.
I was appreciative enough to become a Patreon donor to his project.
I'm sure he saved me a year and several pounds.
He has multiple YouTube videos, but this one summarizes his technique.
I have begun my ultralight wing using this D-tube technique.
It is same idea, as proposed by Strojnik earlier. Big minus here is - it is ok only for single ply, no overlap.
 

daveklingler

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It is same idea, as proposed by Strojnik earlier. Big minus here is - it is ok only for single ply, no overlap.
Not sure what you mean about "no overlap", but he cites smooth overlaps as an advantage of the technique.

I don't see any reason offhand why you couldn't use a similar technique with infusion for multiple plies.
 
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