Note: I had to delay the design update because of the development of my printer and other things. I try to get up to this design with some nice new features as soon they are finished. :) Sorry for the delay.
- Update: Version two with plenty of mechanical design changes coming soon. Designed for the Raspberry pi zero and cam.
- Update! The redesign of version 2 will take a little longer due to deeper design changes for rigidity and component integration.
The purpose of this development was to gain knowledge in design and material strength and of course the fun factor to have a small FPV vehicle, inspired by the recent 250 race class. The focus wasn´t race performance as a CFK plate build is just more rigid than PLA. Instead I wanted more flight time to cruise around, or as base for more scientific operations such as mapping or inspection. The flight time happened to be around 17 minutes with a standard FPV cam, so I considered the whole construction as a success, regardless of the problems I discovered during testing..
I liked the idea to have an „exoskeleton“ , which is nothing new as this is standard in aviation and DJI phantoms or Microdrones etc build upon that concept. The main advantage seemed to be the more integrated look, aerodynamic, no need for CFK plates, complete in home production except for the electronics which led to more freedom from suppliers at least for the frame, protection for sensitive electronics inside and last but not least, freedom of design.
To ease up the printing process, the frame needed to be simple. Luckily my printer was able to handle all shapes without to much support material. The canopy can be printed completely without support. However the arms in V2 are a little complicated as they are hollow and the print tends to deform but it came out good enough for the first complete prototype.