Quadcopter frame This is a structure (frame) in which all the other parts fit in. It acts as a skeleton in which different components are placed in such a manner that they uniformly distribute the drone’s center of gravity.
Different drone’s designs have different quadcopter frames structure with a minimum of 3 propeller fitting gaps. They are available in various shapes and sizes and their price ranges from a mere $10 to $500 depending on their quality.