Yesterday I had a friend test my first 3D printed and laminated wing for the first time. He reported that it did fly but not very good.
Then I went there to test it myself, and was surprised to see this:
He had mounted it backwards! We had a good laugh and were surprised that it could fly backwards.
Anyways, then we mounted it the right direction and my friend tested it again, and then I tried it. It's as good as any other wing IMO.
Flies well, and did not break.
It's root chord is 190mm. Tip chord 100mm. Wing span: 590mm. Surface area 800 cm2. Profile is Tom Speer's H105. Has -2 degrees wing twist from root to the tips.
It was printed in three parts. Glued with CA glue. Laminated at once with 4 layers of 200g glass and two strips of unidirectional CF on both sides.
Was vacuum bagged using vacuum storage bags.
Will keep flying it a bit more and see if it holds up, but I have other wing I want to try and new ones I want to build. So it may not get enough water time.
Next on my list is a low aspect 3D printed wing with internal metal rods and no laminaton. Just curious to find out if it is possible.