By Dr. Daniel Phiesel, head of the Unmanned Aviation Project Group, Federal Ministry fro Digital and Transport, Germany
SORA (Specific Operations Risk Assessment) , the international framework, is quite relevant here
Small things fly better
This makes sense. The larger an object gets, its surface area would increase 4x and the volume would increase 8x, thus changing the surface to volume ratio and affecting the lift. Insects, for example, have no issues flying at all (except for wind resistance, probably)
2021 - The National Drone Act was released 2024 - First commercial operation of air taxis in Germany (have to check that one out)