HF3D Ventis

thingiverse

Technical details: Span: 82cm MAC: 15.57cm wing Chord:12.5cm flaperon root Chord: 4cm flaperon tip Chord: 3cm flaperon len: 36cm Area: 1277cm² AR: 5.26 Airfoil: E395 with .3cm outwards offset, trailing edge cut Battery: Tattu 1300mAh 3s or your choice Motor: racerstar BR2205 2300kv or A2212 1000kv Prop: APC 8x4F or best match for motor Mass: 612g with battery Wing loading: 4.792kg/m² Fuselage len: 66cm Tail length: 40cm Flight Cont: APM2.8 running arduplane Print 7 ribs minimum, 3 for each side and 1 for the middle of the wing. I tried both 5mm and 3mm foamboard as skining for the wing, 5mm foam was difficult to bend due to the small radius of curvature for the leading edge of the airfoil. Avoid PLA for the motor mount unless you know the motor temperature will be within reason for the material. I had the Racerstar BR2205 motor melt through its mount in the second video below (but I also had it over proped for more thrust). See videos below for more information: https://www.youtube.com/watch?v=hMq31JEhF54 https://youtu.be/sKjkSmSpeiU https://www.youtube.com/watch?v=0T6uJfQ7a4E https://www.youtube.com/watch?v=zFDAoicumLA