"Uh, isn't there a rather important point that frequency licensees often have directional limitations, such that terrestrial cellular carriers have to often point their antennas downward to comply? And some other carrier handles aircraft to ground…"
"Perhaps try to get some introductions through Randy, as he is located in Japan, which has extensive agricultural spraying with RC helicopters. Though that is a challenging environment, mountain valleys obscuring GPS (so RTK support), extensive…"
"Considering the active DJI hacking scene this was inevitable. Even if DJI wasn't doing something shady, the number of holes/bugs makes this a problem. The flipside being opensource is in that weird middle zone where transparency is a blessing and a…"
"Here's launchpoint demoing their 1.5KW UAV genset underslung on a DJI S1000, notably the pancake generator is flat relative to the ground on the bottom. Wonder how serious the torque is... https://www.youtube.com/watch?v=cJhT1UoBLFM"
"Shame Launchpoint isn't publically selling their dual halbach axial motors. They claim pretty high power density that is pretty impressive (5hp/lbs), and DARPA/NASA is still funding their technology expansion research. Notably they seem to pushing…"
"While the winch based systems with a flywheel seem to be a common test platform, it always seemed like better performance could be gained with a merry-go-round configuration with multiple kites/fliers spooled out on tethers rigged from moment arms…"
"Would concentrating the hardware to essentially a battery rotor hub and joining 2 together (common payload shaft, functionally independent, but one slaved to the other wirelessly) to be a coax be another path?"
"At this scale though, are generators confined to two-stoke oil premix fueled piston engines? Will there ever be a viable microturbine turbogenerator with foil bearings to avoid the lube issue and use straight gasoline or diesel? Will Liquid Piston's…"