Abstract. The purpose of this study is to illustrate how the design and deployment of a minimal protective system for multi-rotorcraft can cater for changes in legislation and provide for greater use both in and outdoors. A methodology is presented to evaluate the design and development of a system which protects both single axial and co-axial rotorcraft. The key emphasis of the development presented is the scenario in which the multi-rotorcraft can fly with increased speed, including the capability of flying through windows and doors without the fear of system failure due to rotor disruption. Furthermore, the degree of autonomy the reconfigurable system should feature as well as the effects of drag and added component mass to the performance of the system is discussed.