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Flying Wing Buratinu Mini 860

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  • 440 views
  • 8 downloads

3D model description

This is the smallest scaled down version of the Buratinu.
Instead of a span of 1300 mm the Mini version has a span of 860 mm.

The special thing about this version is that all parts of the wing, i.e. W3 to W5 as well as the elevons are identical to the large version which are included here:
https://www.thingiverse.com/thing:3047415

The wingend W6 is smaller. You must take it from the Buratinu Midi 1000
https://www.thingiverse.com/thing:4280142

Or in case you can print larger, you can take the parts from here:
https://www.thingiverse.com/thing:3857570

This version does not require any parts to be glued, except for the elevons.
Provided, of course, that the connectors fit tightly, in principle, all wing parts can be plugged with carbon tubes and tied together with a string, as has already been proven with the Red Swept Wing.
https://www.thingiverse.com/thing:1547267

The big advantage of this is that you do not only need to replace individual parts if they are damaged. You can also use the parts for the original Buratinu, but then the parts have to be glued!
However done, glued or not glued, the wing halves are plugged onto the fuselage.

Please note!
There was no opportunity to fly it yet. That's why I can't say anything about its flying characteristics.
But it will be much more sensitive to elevon deflections, because the smaller model has the same size elevons as the much bigger original Buratinu.
On this model the elevon deflections will be even more powerful than on the Buratinu Midi 1000 because it lacks an additional wing.
Therefore I can only recommend to start with a maximum deflection of 8 mm. For the ailerons rather less and move slowly and fly wide-ranging.
Expo should be at least 50%.

The tubes in the fuselage have core bores for M3 threads.
Before carefully tapping threads, the holes must be predrilled with 2.5 mm drill bit.
Nylon screws are best for fixing the 8mm tubes.

Specifications
airfoils: own design
wing span: 860 mm
wing chord: 284/140 mm
CoG: 164 mm from rear edge of the fuselage (9% stability meas.)
overall weight: 650 – 700 g
wing area: 16.5 dm²
wing loading: 39.4 - 42.4 g/dm²
motor: Propdrive 28-36 1000KV
propeller: Aeronaut CAM Aeronaut Carbon Classic 10 x 6"
battery: Turnigy 950 mAh or 1300 mAh 3S
motor camber: -4°

Print Settings

Fuselage front
perimeter_extrusion_width = 0.5
layer_height = 0.2
perimeters = 3
fill_density = 0%
bottom_solid_layers = 20
top_solid_layers = 4
Fuselage rear
perimeter_extrusion_width = 0.5
layer_height = 0.2
perimeters = 2
fill_density = 20%
bottom_solid_layers = 1
top_solid_layers = 1

Access panels and brakets
perimeter_extrusion_width = 0.5
layer_height = 0.2
spiralvase
bottom/top solid_layers = 0
Wing end W6
perimeter_extrusion_width = 0.5
layer_height = 0.2
perimeters = 1
fill_density = 0%
first_layer_height = 0.3
bottom_solid_layers = 7
top_solid_layers = 5

  • 3D file format: STL
  • Publication date: 2020/04/20 at 16:54

Tags

Creator

Designs 56
Downloads 11.2k
Followers 171

http://www.vizy.homepage.t-online.de/

I am constructing engineer for powerplants. Designing was allways my passion and I am glad, now as a pensioner, to have interesting challenges again.
I want to give thanks to the
http://www.hackerspace-ffm.de

License

CC BY


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