Flying Wing Buratinu Midi 1000

thingiverse

<iframe width="640" height="360" src="https://www.youtube.com/embed/uHRJDiYtmiI" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe> This is a scaled-down version of the Buratinu, with a span of 1000 mm instead of 1300 mm. The unique feature of this model is that all parts of the outer wing, including W3 to W5 and the elevons, are identical to the larger version available here: https://www.thingiverse.com/thing:3047415. Alternatively, you can print larger and use the parts from here: https://www.thingiverse.com/thing:3857570. This version does not require any glue except for the elevons. Provided that the connectors fit tightly, all wing parts can be plugged with carbon tubes and tied together with a string, as demonstrated with the Red Swept Wing: https://www.thingiverse.com/thing:1547267. The advantage of this is that you don't only need to replace individual parts if they are damaged, but also use the parts for the original Buratinu, which would require gluing. However it's done, glued or not glued, the wing halves are plugged and screwed to the fuselage using two 8 mm carbon tubes, each 137 mm long. The remaining dimensions of the carbon tubes can be found at the original Buratinu, along with the print settings. Note: There was no opportunity to fly it yet, so I can't comment on its flying characteristics. However, it will be more sensitive to elevon deflections due to the same size elevons as the larger original Buratinu. Therefore, I recommend starting with a maximum deflection of 8 mm and moving slowly. Specifications: Airfoils: own design Wing span: 1000 mm Wing chord: 284/140 mm CoG: 190 mm from rear edge of 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 using 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 using Slic3r to avoid unnecessary filling in between the 1mm wall) Access panels and brackets: Perimeter extrusion width = 0.5 Layer height = 0.2 Spiral vase Bottom/top solid layers = 0 Wings: 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