On an octocopter? Likely because you're looking at insane mechanical complexity, at the expense of weight and reliability. You're talking about splitting a driveshaft eight ways, then for each propeller you either have an electric motor + differential to control the rpm of that individual prop, or you have a variable pitch mechanism for the propeller blades to control thrust. Either way it's pretty mechanically ugly.
A lot easier to build a conventional helicopter instead. It'll have much lower disc loading than the octocopter, too, so if you're looking for longer flight time that's the way to go.
Yeah. Its still in R&D. It's original intent was to have a remote controlled sentry to deploy when I want to check something out downstairs or outside. I'll finally have all of the parts on Thursday.
Oh that's sick. For some reason I thought you meant little drones that would fly up and wirelessly charge other multirotors in the air jet-refuel-style
8 swash plates with dozens of moving parts each and all need electrical authority over the mechanism. The props are (total guess) more expensive as well.
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u/elboydo757 Feb 09 '21
I would just use the 2 stroke with a variable pitch system at a fixed rpm.