PRELIMINARY DESIGN OF AN INOFFENSIVE FIXED-WING UNMANNED AERIAL SYSTEM

Aim of this paper is the preliminary design of an harmless fixed-wing unmanned Aerial System. To improve application fields, endurance has been selected as fundamental performance and the blended wing configuration has been chosen. So the fuselage has the same airfoil of the wing and contains all the payload. In this way the drag has been reduced. Because of the blended wing arrangement, to control pitch and roll elevons have been introduced. To guarantee the directional stability, winglets have been used; besides winglets increase the equivalent aspect ratio and consequently reduce the drag and improve the endurance. The selected propulsion system has been based on an electrical brushless …