Flying Wing Buratinu

thingiverse

I design and build models, like this Buratinu, a smaller version of the Buratino designed by Bil in St. Petersburg. I am grateful to Bil for his great design. With its pointed nose, I was optimistic that I could solve the CG problem, which can be tricky with printed planes. The original Buratino has a wingspan of 1800 mm, but I designed this one for a wingspan of 1300 mm with slightly more sweep back. You can see a video on YouTube about how to build and launch this model: https://www.youtube.com/watch?v=HTmxjgw0Mq4&t=165s Helmut uploaded a great video showing how to launch it by hand: https://www.youtube.com/embed/e5GoHlCdLF4 To print the wings, use 0.5 mm width, 4 bottom layers, and 4 top layers with no infill and 1 perimeter only. If you print thinner walls, the upper side will not stick well to the inner stiffening construction. If you apply thicker walls, the perimeters will not come out continuously. For all wing parts: layer height =0.25mm, width =0.5 mm, 1 perimeter, no infill. W1 and W2 need 4 bottom layers and 4 top layers. W3 servo needs 3 bottom layers and 4 top layers. W4 and W5 need 3 bottom layers and 3 top layers. W6 needs 3 bottom layers and 5 top layers. Winglet: 2 perimeter, layer height =0.2 mm, width =0.5 mm, 2 bottom layers, 3 top layers with 25% infill. Winglet slim: 2 perimeter, layer height =0.2 mm, width =0.5 mm, 1 bottom layer, 2 top layers with 6% infill. For the fuselage: layer height =0.2 mm, width =0.5 mm. Fuselage/W1/W2 front and rear need 305 mm and 400 mm of carbon tubes with diameter 8 mm. W2/W3/W4 needs 105 mm of carbon tube with diameter 8 mm. W4/W5 needs 40 mm of carbon tube with diameter 6 mm. Specifications: * Airfoils: own design * Wing span: 1300 mm * Wing chord: 480/140 mm * CoG: 220 mm from the front of the fuselage * Overall weight: 1245 g * Wing weight one side complete: 342 g * Wing area: 32 dm² * Wing loading: 39 g/dm² * Motor: Propdrive 28-36 1200KV * Propeller: Aeronaut CAM Aeronaut Carbon Classic 10 x 6" * Static thrust: 1300 g (3S Lipo) * Battery: Turnigy 1800 mAh 3S 40~50C Lipo * Motor camber: tilted -1.5 degrees Update April 16th, 2019: Uploaded elevon parts for smaller printer: - Elevon inner cut - Elevon rudder horn - Elevon joint inner If you want to print the wing end with the winglet in one, you can now take the following part: - W6 incl. winglet The base of the winglet is 1.5 mm thick and must be completely filled with solid layer. Update May 17th, 2019: Uploaded fuselage 1 mc4 with integrated 4° motor camber. The hole pattern is rotated 90°.