What I want in a nutshell: a UAV airship that will park itself at 70,000 feet or as high as it needs to be to minimize weather impact, keep itself within a 100 meter "box" or so, have enough lift to carry solar panels and other gear, stay aloft for as long as possible, be fairly robust, and be affordable if built in quantity. All done with open source gear to the maximum extent possible. The reason: this would make for a very nice WiFi relay using high-gain directional antennas, in theory. The…See More