It is also possible to fit quadcopters with guards that enclose the rotors, further reducing the potential for damage. However, as size increases, fixed propeller quadcopters develop disadvantages relative to conventional helicopters. Increasing blade size increases their momentum.
Quadcopters can be equipped with protective covers for their rotors, which helps reduce the risk of damage. Nevertheless, as these drones become larger, traditional helicopter designs start to lose their edge over conventional aircraft. As propeller blades get bigger, they acquire more mass.