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Flying Wing Buratinu Midi 1000

3D model description

This is a scaled down version of the Buratinu.
Instead of a span of 1300 mm the Midi version has a span of 1000 mm.
The special thing about this version is that all parts of the outer wing, i.e. W3 to W6 as well as the elevons are identical to the large version which are included here:
Or in case you can print larger, you can take the parts from here:

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.
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 and screwed to the fuselage.
Two 8 mm carbon tubes are used, each 137 mm long.
The remaining dimensions of the carbon tubes can be found at the original Buratinu.
Also the print settings are listed there.

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.
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%.

airfoils: own design
wing span: 1000 mm
wing chord: 284/140 mm
CoG: 190 mm from rear edge of the fuselage
overall weight: 820 g
wing area: 20 dm²
wing loading: 41 g/dm²
motor: Propdrive 28-36 1000KV
propeller: Aeronaut CAM Aeronaut Carbon Classic 10 x 6"
battery: Turnigy 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 = 11
top_solid_layers = 2
gap_fill_speed = 0 (if you use Slic3r to avoid unnecessary filling in between the 1mm wall)

Fuselage rear
perimeter_extrusion_width = 0.5
layer_height = 0.2
perimeters = 3
fill_density = 0%
bottom_solid_layers = 0
top_solid_layers = 5
gap_fill_speed = 0 (if you use Slic3r to avoid unnecessary filling in between the 1mm wall)

Access panels and brakets
perimeter_extrusion_width = 0.5
layer_height = 0.2
bottom/top solid_layers = 0

perimeter_extrusion_width = 0.5
layer_height = 0.25
perimeters = 1
fill_density = 0%
bottom_solid_layers = 4
top_solid_layers = 4

Bushing 7mm M4
perimeter_extrusion_width = 0.4
layer_height = 0.2 or less
perimeters = 3
fill_density = 25%
bottom_solid_layers = 4
top_solid_layers = 4

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



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