Speedy "Red Mini Wing" RC

myminifactory

Here is a brood to the bird family. Related to the wingspan, it is a crossbreed of the "Red Duck" and the "Red Swan". Still small, but speedy and pretty manoeuvrable - a big fun for a real pilot. Anyhow, Marcel, member of the ACNE http://www.aero-club-nieder-eschbach.de/ who piloted the maiden flight, had a lot of fun and this is his first impression: "The small model is already very good, but some model flying experience is needed. For a wing type of this small size it flies even damned good. It’s not a plane for circling through thermics, of course it’s to small for that. The performance is shown when one flies it speedingly". Uwe Heuer - experienced flying wing designer and Horton specialist - says about this square form of a flying wing, which he loves to call "panel plane": "They do have a low damping and flight stability around the pitch axis (elevator), therefore you can fly snags in curves. This is why I love these “panel-planes”, these are also good-tempered against tilting to one side. But on the other side you pay that with the high sensitivity regarding wrong trimming of the CG and the elevator. During stall the wings stay level but for recovery they need a long dive to speed up again". Besides my other planes it was flying at the InterEx 2016 in Versiox/Geneva http://jivaro-models.org/interex_2016/index.html They were very enthusiastic about of the speed which is possible. But we dicovered that it is also posssible to land it slowly. Here you can see how it flies: https://youtu.be/d8cFB1equik https://youtu.be/QrYqn8kItYM This small plane is quickly printed.The biggest parts are 220mm high to print, but I also sliced them in half. Wing fixating Additional to fasten the wing with rubber band, it is important to secure it against sliding sidewards. You can do this by simply fixiating it with a short tape at front and at back to the fuselage. Update 11.23.2015 Uploaded smaller wing segments: wing middle left 110 wing middle right 110 wind left right 110 And smaller front fuselage segments: fuselage front 1 fuselage front 2 fuselage interface front Update 12.14.2015 Uploaded smaller back fuselage segments: fuselage back 1 fuselage fback 2 fuselage interface back Update 01.04.2016 Uploaded winglet test 1 (1.5mm thick) winglet 0.9 (0.9mm thick) which is successfully tested by "wytti" print setting: three 0.3 solid layers Update 01.07.2016 Wing fixiating and centering Centering the wing by two little ribs on the bottom side of the middle wing part. Thank you Scorpio! I uploaded the files: wing middle left 110 centered wing middle right 110 centered Additional I let the first files online in case anybody wants to extend the wingspan by simply add a wing section in the middle. Update 01.21.2016 Parametric servo inserts for those who have different servos.You can modify it by using the scad file. Update 1. August 2017 Uploaded bigger stabilizer. They are 14% bigger base 90 mm top 66 mm hight 140 mm Specifications airfoil: ClarkYS wing span: 794 mm wing chord: 160 mm aerodynamic center 27 mm wing overall weight: 270 g wing area: 12.7 dm² fuselage empty weight 75 g fuselage overall weight 270 g wing loading: 42.5 g/dm² longitudinal stability (Thies) STFs: motor: Turnigy 2632 Brushless Motor 1000kv motor camber: -3° side pull: 2° right propeller: Aeronaut CAM Aeronaut Carbon Classic 9 x 6.5" / 23 x 16.5 mm static thrust: 500 g (3S Lipo) battery: Turnigy nano-tech 950mah 3S 25~50C Lipo Pack ESC: HobbyKing YEP 30A (2~4S) SBEC Brushless Speed Controller receiver: OrangeRx R615X DSM2/DSMX Compatible 6Ch 2.4GHz Receiver w/CPPM servos: Hitec HS-55 Print Settings Attention The wings are designed to print with 0.5 width, 0.3 hight and 2 bottom and top layer If you print thinner, the perimeter of the upper side will not merge with the perimeter of the inner spars. If you print thicker, the perimeter will not be printed continuesly in one turn. The print must go as if you print in spiral vase mode. So you reach at least a smooth surface on the upper side. If needed, you must try with 0.49 or 0.48 width. It depends on which slicer you use. The second thing is, if you print with less layer hight, the inner spars will not connect the top and the bottom layer. There will be a gap inbetween. All parts: layer height =0,3mm, width =0.5 mm wing 1 perimeter, 2 bottom layer, 2 top layer, hollow wing servo: 3 bottom layer, spiral vase mode aileron base: 5 bottom layer, spiral vase mode aileron end: 2 bottom layer, spiral vase mode aileron appendix: 1 perimeter, hollow aileron interface: no bottom layer, spiral vase mode fuselage Note: The extrusion width must be thick enough to prevent printing infill between the two perimeters of the 1mm hull. You must try out and check it in the preview. I had to set the width to 0.53mm. fuselage front: 7 bottom layer, 3 top layer, 2 perimeter, extrusion width 0.53mm, 20% infill fuselage back: 3 bottom layer, 3 top layer, 2 perimeter, extrusion width 0.53mm, 20% infill fuselage interface: 2 perimeter 0.4 no bottom/top layer, holow fin: 4 bottom layer, spiral vase mode fin cover plate: 2 bottom layer, hollow The bigger fin: 0.3 layer hight 0.5 width 3 solid bottom layer, spiral vase mode The bigger fin plate: 3 solid bottom layer 1 perimeter 10% infill Print SettingsRafts: No   Supports: No   Notes: All parts: layer height =0,3mm, width =0.5 mm wing 1 perimeter, 2 bottom layer, 2 top layer, hollow wing servo: 3 bottom layer, spiral vase mode aileron base: 5 bottom layer, spiral vase mode aileron end: 2 bottom layer, spiral vase mode aileron appendix: 1 perimeter, hollow aileron interface: no bottom layer, spiral vase mode fuselage fuselage front: 7 bottom layer, 3 top layer fuselage back: 3 bottom layer, 3 top layer fuselage interfaces: 2 perimeter 0.4 no bottom/top layer, holow fin: 4 bottom layer, spiral vase mode fin cover plate: 2 bottom layer, hollow