Got mine today.
Thanks for your help Rolf. As always I very much appreciate your assistance.
You could try reducing wall count and infill density for outer wing as it sees lower loads.
Schrenkâs curve is a decent approximation of wing lift distribution.
Hi @rickyg32 ,
What you did is amazing, need long hours and hard work⌠I am currious to know how long you did print the whole plane? What 3D print do you use that can do such long hours ?
I just think to print wing extension using 3D print.
Regards,
Tony
Hey Tony
hard to say how long it took because I would print, find a problem, update and print again. Make improvements as I go. But if I was to do it again, print everything starting today. It would likely take about 2 weeks or less. Itâs not a hard thing to print.
Hey Lupus,love that name.
Yes I am looking into changes to the printing profile. That said I am really close to the weight of the original Fighter so itâs not a lot to change.
Right now I am looking at a different approach to building the wing al together. More of a hybrid wing. Wood and 3d print. For me this is about learning so itâs all good.
As for Schrenks Curve, I have never heard of that âŚwill check it out.
Hey @Rolf
Itâs been a bit since I came back to this topic.
In the time since I tossed the build and started over. I found issues with the 3D printed parts and their in ability to stay stable and well they weigh a lot.
Anyway I went back to the drawing board and thinned out the 3d printed frame and installed a plywood internal structure. I found that the PLA was just not rigid enough to make it a viable VTOL.
So I took my original drawing and tweaked it with all the information that you provided. The down side is the body with tail is heavier then the original fighter. IF I bother to try another version I will see what can be done to reduce the weight. But so far 3D printing is proving to be a heavy solution.
I tend to use each thing I build to learn new stuffâŚso this time its paint and vinyl lettering.
I would love to turn this into a fiberglass hull. Would be a lot lighter.
Here is what the body looks like today. Itâs fully wired.
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Hi Ricky,
congratulations on the wonderful design. The surface looks much nicer than that of the foam planes.
I have no idea about aircraft 3D printing, but a good pilot friend has also gone to composite construction for weight and strength.
and 10 times more expensive, time and labour intensive, but perfect in the end.
Matthias has build our hybrid, complete wood, but the nose is covered in fibre glas: Flebatron maiden done
I am curious to see how you will attach the heavy motor arms to the wings. I am now fully satisfied with mine. Here is a small impression from the flight to test the Auto and TECS settings:
https://vimeo.com/manage/videos/869660031
Rolf
Hey Rolf
That bird like plane is so elegant it really is pleasing to the eye. Nice job.
As for Fiberglass or composite in general your right its expensive. I am thinking of building a 4 axis CNC hot wire cutter this winter and perhaps reproduce the body in foam. I have been playing with CNC stuff for a few years now so makign the leap to a foam cutter shouldnât be to hard.
You question about mounting the arms. This drawing will give you a rough idea. The drawing doesnât show that the arms also fold like your machine does. I just drew the tubes with no folding system just for simplicity.
I assume your running Arduplane if thatâs the case any chances you could share with me your param file. Not so much to use it but to compare against the one I am assembling.
Cheers
Just watched the video.
Wow nice.
I confess I found it a bit un-nerving to see the wings flex in flight. I know thatâs normal but always makes me uncomfortable.
Also I have to ask, what OSD is that. Itâs very informative.
oo just noticed your 12s
Also its weird to watch it sudden go backwards. I know drones do that been flying them for years. But to see a plane do that. weird. lol