"Red Swan" the biggest fully printed Flying Wing

by wersy, published

"Red Swan" the biggest fully printed Flying Wing by wersy Sep 6, 2014
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The ugly duckling became a swan. So the fairy tale of Hans Christian Andersen came true.
Yes I know, it didn't become the beauty of a swan, but it has this wonderful flight characteristic. It can glide like a sailplane. The motor was often not in use as you can see on this video, which was taken with a mounted mini cam: http://youtu.be/FHDhLBsC3_M
As I announced on "Red Duck" http://www.thingiverse.com/thing:407766 , I expanded the wing to a wing span of 1950 mm. As expected, the nose had to expand once more. 400g more weight of the wing required a 100 mm longer nose. Otherwise I had to add ballast weight.
This time it was even more difficult to find the plane on the display to follow all the movements, especially the aerobatics which Marcel from http://www.aero-club-nieder-eschbach.de/ had flown perfectly - crowned with a super soft landing.

This is a video with crash landing taken at Inter-Ex 2015. The flying wing was rewarded with the Innovation-trophy:

My Club: http://hackerspace-ffm.de/


wing span: 1950 mm
wing chord: 336 mm
aerodynamic center: 80.2 mm
aerodynamic center 8% stability: 61.4 mm
wing profil: Clark YS
wing overall weight: 1520 g
wing area: 65,52 dm²
fuselage overall weight 730 g
wing loading: 34,3 g/dm²
longitudinal stability (Thies) STFs: 65,0

motor: Robbe Roxxy BL Outrunner 2834-08
propeller: Aeronaut CAM 10 x 6”
static thrust: 1100 g (3S Lipo)

Print and Material
print time wing: 120 h
print time fuselage: 35 h
used PLA: 1.8 kg

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Thank you for the info, what kind of glue have you used by the assembly?

wersy - in reply to

I use 2 component epoxy glue.
Important is, to slightly sand the contact surfaces.

Hello, what filling rate for the wings ??

wersy - in reply to

No infill, just hollow.
One shell width 0,5 mm, layer height 0,3 mm.

what about placing the rotor behind the wing? many electric sailplanes are using this so you get a better image from your cam

Then I will run in a big problem with the GC and the nose has to be very long.
Here you can see why: http://forums.reprap.org/read.php?238,406825,419423#msg-419423

Very nice. Is it covered in plastic film? Any more part files? I would like to make one.

No, it is not covered in plastic film.
You can take all the other parts from the "Red Duck": http://www.thingiverse.com/thing:407766
The only difference are more wing sections fore more wing span and to take this spacers for a longer nose.

"Red Duck" First Take Off of a fully printed flying wing.
by wersy

Cool mal welche auf Thingiverse zu finden die deutsch sprechen :D
PS:Cooles Flugzeug ist das auch okay für anfänger?

Nurflügel sind nicht für Anfänger zu empfehlen, es sei denn man findet jemanden, der es fliegen kann.
I would not recommend a flying wing to beginners, except you have somebody who can fly it.

Very good job guys!

Thank you very much for the compliment, I am glad you like it.
The next days I will add some general information. Anyway, feel free to ask whatever you want to know.

This is awesome! I loved your previous projects, but this is one of the coolest things i've seen in a while! Would it be possible to write detailled instructions of how you built that beauty?

I am from Switzerland, so chances are higher for me to find the same parts you used, this was a problem I ran in a lot when I tried to recreate american designs...