I think what they do is they get the blades on the mower part to counter rotate fast enough so that it creates lift. Then they fly into the field and
make their design. Then they fly back out. How they control it once airborne is beyond me, though.
This content community relies on user-generated content from our member contributors. The opinions of our members are not those of site ownership who maintains strict editorial agnosticism and simply provides a collaborative venue for free expression.