I had an idea for a swarm of tiny drones, the smallest being as small as fairy flies at 0.15mm long, that could form into shapes and structures, even mimic the shapes of living creatures.
They would form into a 3d skin, with the inside of the shape being hollow. Assuming they have the level of accuracy needed for them to stay aligned, especially for movement If mimicking a creature.
The drones will be similar to the current quadcopter design and as they form the shapes, the rotors will be facing inside into the hollow area of the structure. I am assuming there will be quite a loud hum from all the drones but I will either save that for another question or the noise can add to the mystery of the swarm creatures or structures.
My question is will all the spinning rotors directed into the hollow inside create some sort of air disturbance or if there are any other problems with this design? other than the issue of programming the drones to move so accurately.