Proteus Plus PW51

thingiverse

This is a 1.8 m span version of the Proteus wing with flaps using the PW51 airfoil designed for printing in a 200 x 200 x 200 mm build volume following Peter Wick's advice on bottom-hinging the flaps and elevons. It has successfully flown, shows excellent efficiency, and handles well as seen in this video. It uses two swept 1x10x715 mm carbon fiber half-spars and a rear 5 mm OD x 500 mm long tube spar for increased wing stiffness. For transport, the design allows sliding off the outer halves of the wing after disconnecting the elevon clevises using strong cross-hatch glass-reinforced tape. Be sure to use at least 2.5 cm wide tape such as this one for joining the wing sections. The temperature is set to 240 C suitable for PLA+ and two swept 1x10 mm carbon fiber half-spars are used close to the CoG to increase the wing stiffness. It highly recommends printing the nose using a (semi-) flexible filament. All up flying weight: 960 g, Wing area: 30.4 dm^2, 3.27 sq ft, and Wing loading: 31 g/dm^2 are calculated. Printed Parts weights and approximate print times are as follows: - Nose: 43 g, 7 hours - Rear fuse: 96 g, 10.5 hours - Spar joiner: 18 g, 1.5 hours - Hatch: 17 g, 2 hours - Fin: 21 g each, 6.5 hours for two - Root wing: 81 g each, 6 hours each - Mid wing 0: 63 g each, 10 hours for two - Mid wing 1: 45 g each, 7 hours for two - Tip wing: 37 g each, 5.5 hours for two - Flaps: 56 g for two, 6 hours for two - Elevons: 47 g for two, 6 hours for two Total weight printed parts: 770 g and total print time (approx): 74 hours are calculated. Vitamins such as 1x10 mm CF strip can be found here, the 5 mm OD tube spar can be found here, and the dowels for joining the nose to the rear fuselage should be cut to 13 mm from 2 mm rod. The hinges should be cut to 14 x 27 mm from 0.3 mm hinging film. Servos (4 needed) such as these ones are required along with two 30 cm long servo extension leads for elevon servos, and the elevon linkage is 70 mm (horn to horn including clevises), and flap linkage is 65 mm (horn to horn including clevises).