safety is paramount, so we have to consider things like the material of the ducts, the materials and durability of the blades themselves, the resulting power-to-weight ratio of the aircraft, and the stress on the battery, in order to make sure the design of the overall aircraft will ensure safety for the end users. The type of propeller design we choose, and the specifications of our product, will dictate a lot about how the overall aircraft can be designed, because weight and spacing of the design are factors which contribute heavily to defining the specifications of the battery, motors, landing gear, etc. that will ensure a safe and smooth flight