how can a four-propeller drone spin in midair, parallel to the ground plane, when all of its propellers are pointing straight down?
In: Physics
I used to have drones. They move by fixed blades (different from helicopters) with different rotating speeds. And the 4 blades atleast on the quadricopter drone rotate this way:
-> <-
-> <- This way they counter each other and the drone stays completely stable.
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