Fecha de publicación: 13/12/2007 Fuente: WIPO "royal booby" An unmanned air vehicle (UAV) system (10), is provided including a ground station (70), a platform (20) configured for carrying a payload (40) and having a propulsion system (30) for enabling the platform at least to selectively sustain a predetermined altitude above the ground station when in flight mode, and also including a tether (50) operatively coupling the ground station with the platform, the tether providing electrical communication between the platform and the ground station.