Bird of Paradise-1250C Fixed-wing FPV Payload Model Aircraft

February 24th Update

Updated the inner wing with flaps. Please pay attention to the flap angle settings; too much angle can easily lead to a stall. Due to personal reasons, future updates and releases for V-tail and other models will be paused. Thank you

When I started making this aircraft, I wondered if it would be easier to replace parts if the 3D Printed plane broke, by making them modular accessories. So, I designed this fully modular and detachable aircraft, continuing the name from the previous model, naming it Strelitzia

In my vision, this aircraft allows for interchangeable V-tail, T-tail, and inverted T-tail configurations. The wing has a two-part structure: the inner wing can be chosen with or without flaps, and the outer wing can have a wingspan of 1250-1500. If any part breaks, simply disassemble and print only that section; there's no need to reprint the entire aircraft

Because the initial design was overly complex, the plane crashed 4 times during early test flights due to various issues. However, this also confirmed the feasibility of the modular design, as the tail survived from the first crash to the last, and the wings survived through the third crash out of the first four. Each time, only partial parts needed to be reprinted. While crashing, I made modifications and adjusted the overly complex design, and it performed stably in subsequent test flights

Aircraft Basic Data：
Wingspan 1250, wing area 24 square decimeters. Compatible with 4-6s 21700 battery packs, motor mounting holes 16*19.

Printing Settings

For the fuselage, 4% adaptive cubic infill is recommended. For the wing sections, 3% 2D Lattice infill is recommended, all with single walls. Areas requiring reinforcement have already been added to the file. Suitable for Bing ABS-ASA filament, print weight around 750-800

Test Flight Data：
Takeoff weight 1750 grams
Wing loading 72g/square decimeter
Power system 6S1P 21700 battery, 2212/1250kv dual motors, 8045 two-blade propellers. 9g metal servos *6
Test data cruising current 3A, cruising speed 55 mph, landing speed around 40-50. It is recommended to set up flaperon mixing, or wait for future wing modules with flaps