A New VTOL UAV Cyclocopter with Cycloidal Blades System

The cycloidal blades system is a thrust propulsion system that consists of several blades rotating about a horizontal axis perpendicular to the direction of normal flight. In order to generate the thrust required, the pitch angles of the individual blades to the tangent of the circle of the blade’s path are varied by a pitch control mechanism installed in the cycloidal blades system so designed that the periodic oscillation of the blades about their span axis may be changed both in amplitude and in phase angle. Therefore, the cycloidal blades system is able to vector its high thrust anywhere within a 360 ° arc parallel to the propellers plane of rotation. This characteristic enables the cycloidal blades system to take off and land vertically, hover and fly forwardly by simple adjustment of blades pitch angles