Abstract: An vertical take-off and landing (VTOL) and horizontal flight (HF) aircraft has a fuselage with wings providing lift during horizontal flight, a rotor on the nose of the fuselage that is stowable during horizontal flight, a first pair of ducted fan propellers on the wings, a second pair of tiltable ducted fan propellers adjacent to the tail, a hydraulic system powered by the main engine and generating propulsive hydraulic power for the rotor system and the first and second pairs of propellers. A control system for the hydraulic system provides propulsive hydraulic power to the rotor system and to the second pair of propellers during vertical take-off and landing and not to the first pair of propellers during vertical take-off and landing and provides propulsive power to the first and second pairs of propellers during horizontal flight and not to the rotor system during horizontal flight.

Abstract: An vertical take-off and landing (VTOL) and horizontal flight (HF) aircraft has a fuselage with wings providing lift during horizontal flight, a rotor on the nose of the fuselage that is stowable during horizontal flight, a first pair of ducted fan propellers on the wings, a second pair of tiltable ducted fan propellers adjacent to the tail, a hydraulic system powered by the main engine and generating propulsive hydraulic power for the rotor system and the first and second pairs of propellers. A control system for the hydraulic system provides propulsive hydraulic power to the rotor system and to the second pair of propellers during vertical take-off and landing and not to the first pair of propellers during vertical take-off and landing and provides propulsive power to the first and second pairs of propellers during horizontal flight and not to the rotor system during horizontal flight.

Abstract: A railway anti-collision and anti-derailment safety system, comprises a self-propelled trolley adapted to precede a train. The trolley has sensor structure to reveal anomalies or obstacles along railroad tracks, and an integration system between the trolley and a train to pilot the trolley from the train and to transfer from the trolley to the train information as to anomalies or obstacles. The trolley responds to the detection of anomalies or obstacles to eject the trolley forcibly from the tracks to one side of the tracks.

Abstract: The present invention relates to a system for the transformation of a traditional self-sustained horizontal take-off and landing aircraft into hybrid, integrated, self-sustained vertical take-off and landing and horizontal flight comprising, besides the propulsion system already provided in the aircraft, a hydraulic propulsion system, activating at least a blade rotor (1), to be used during the vertical take-off and landing and transition phases, said hydraulic system being powered by the engines of the aircraft, and at least an auxiliary engine (2), provided in a rear position and/or under the aircraft, said at least an auxiliary engine being progressively tiltable and swingable between two limit positions, respectively vertical position and horizontal position, said standard propulsion means of the aircraft being deactivated during the vertical take-off and landing and the transition and activated during the self-sustained horizontal flight, and said at least an auxiliary engine and said at least one auxili