The Buratinu is a smaller derivate of the Buratino which was designed by Bil in St. Petersburg.
Thank you Bil for the great design.
With its pointed nose I was optimistic that I would manage the CG problem, which is always tricky with printed planes.
The original has a wingspan of 1800 mm. I designed it for a wingspan of 1300 mm with slightly more sweep back.
The video is on YouTube youtube.com/watch?v=HTmxjgw0Mq4&t=165s
Detailed information about the development from the beginning and a lot pictures of the parts can be found on rc-network
Recommended Print Settings
The wings are designed to print using 0.5 mm width, 4 bottom and 4 top
layers, no infill, 1 perimeter only.
Should you print thinner walls, the perimeter of the upper side will not stick well enough
to the perimeter of the inner stiffening construction.
If you apply thicker walls, the perimeters will not come out continuously in one
The layers must build up as if you were printing in spiral vase mode. Only then you get a
smooth surface on the upper side.
If unsatisfied with the results, try out 0.49 or 0.48 width in your slices settings. It
depends whether you use Cura, Slic3r, S3D or what you have. I suggest you experiment with
some tests before printing the whole thing.
The second point is: Should you print lesser layer heights, the inner stiffening
construction will not connect well to the top and bottom layers. You will suffer a gap inbetween.
All wing parts:
layer height =0,3mm, width =0.5 mm, 1 perimeter, no infill
W1, W2: 4 bottom layer, 4 top layer
W3 servo: 3 bottom layer, 4 top layer
W4, W5: 3 bottom layer, 3 top layer
W6: 3 bottom layer, 5 top Layer
elevon inner: 6 bottom layers, spiral vase mode, no top layer
elevon outer: 3 bottom layers, spiral vase mode, no top layer
elevon joint: no bottom/top layer, spiral vase mode
All fuselage parts: layer height =0,2mm, width =0.5 mm
fuselage 1: 3 perimeters, 12 bottom layers, 3 top layers, 40% infill
fuselage 2: 3 perimeters, 2 bottom layer, 3 top layer, no infill
fuselage 3: 2 perimeters, 2 bottom layers, 3 top layers, no infill
access panel and bracket
layer height =0.2 mm, width =0,5 mm
spiral vase, no top/bottom layer
airfoils: own design
wing span: 1300 mm
wing chord: 480/140 mm
CoG: 113 mm
overall weight: 1245 g
wing weight one side complet: 342 g
wing area: 32 dm²
wing loading: 39 g/dm²
motor: Propdrive 28-36 1200KV
static thrust: 1200 g (3S Lipo)
battery: Turnigy 1800 mAh 3S 40~50C Lipo
motor camber: tilted -1.5 degrees