Solar Plane Project

Originally the plan was to build a new airframe (MK3) for the first solar test flights. This would give a “fresh” airframe (foam board planes fly marginally better when new with no small wrinkles in the paper) and I could use what I learned from building MK2 to build a better and lighter MK3. However…

When choosing a battery the main consideration was maximizing energy density by weight. Current output was not really a concern as the number of cells needed in parallel to have the desired capacity would allow current output far beyond what was needed. This lends itself to Lion batteries, and more specifically the 21700 formfactor. The…