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公开(公告)号：US11161602B2
公开(公告)日：2021-11-02
申请号：US16473701
申请日：2017-12-29
Applicant: LEONARDO S.P.A.
Inventor： Luigi Bottasso , Antonio Zocchi , Massimo Brunetti , Luca Medici , James Wang , Giorgio Lucchi
Abstract: A rotor for an aircraft capable of hovering includes a stationary support structure and a rotative element, which is rotatable about a first axis with respect to said stationary support structure with a first rotational speed. The rotor includes at least one blade, which is operatively connected with said rotative element; and a transmission group, which includes an output element rotatable about first axis with a second rotational speed different from first rotational speed.
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公开(公告)号：US11111011B2
公开(公告)日：2021-09-07
申请号：US16474097
申请日：2017-12-29
Applicant: LEONARDO S.P.A.
Inventor： Luigi Bottasso , Antonio Zocchi , Massimo Brunetti , Luca Medici , James Wang , Giorgio Lucchi
Abstract: A rotor for an aircraft capable of hovering includes a stationary support structure and a rotative element which is rotatable about an axis with respect to the stationary support structure. The rotor has at least one blade, which is operatively connected with a rotative element. The rotor has a source of a magnetic field, which is either stationary or driven in rotation at a first rotational speed and an electric conductive element, which is operatively connected to the rotative element and can be driven in rotation at a second rotational speed different from first rotational speed. An electric conductive element is electromagnetically coupled so that an electromotive force is magnetically induced in electric conductive element itself Two rings extend radially inward from a tubular body of the rotor hub with the first ring connected to a plurality of thermally conductive rings of a flow deflector at an axial end of the rotor and the second ring supports the electric conductive element.
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公开(公告)号：US20170253328A1
公开(公告)日：2017-09-07
申请号：US15501076
申请日：2015-08-07
Applicant: LEONARDO S.p.A.
Inventor： James Wang
Abstract: An anti-torque rotor of a helicopter, having: a supporting body; a drive shaft which rotates about a first axis with respect to the supporting body; a hub connected operatively to drive shaft and angularly fixed with respect to first axis; at least one blade which is connected operatively to hub, is angularly fixed with respect to first axis, and is angularly movable with respect to a second axis to adjust the pitch angle of blade; and an actuator which can be operated to rotate blade about second axis to adjust the pitch angle of blade; actuator has an electric motor which generates torque along the first axis; and a mechanical stage interposed between the electric motor and blade, and designed to convert the torque into rotation of blade about the respective second axes; electric motor is fixed to supporting body.
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公开(公告)号：US10207800B2
公开(公告)日：2019-02-19
申请号：US15501076
申请日：2015-08-07
Applicant: LEONARDO S.p.A.
Inventor： James Wang
Abstract: An anti-torque rotor of a helicopter, having: a supporting body; a drive shaft which rotates about a first axis with respect to the supporting body; a hub connected operatively to drive shaft and angularly fixed with respect to first axis; at least one blade which is connected operatively to hub, is angularly fixed with respect to first axis, and is angularly movable with respect to a second axis to adjust the pitch angle of blade; and an actuator which can be operated to rotate blade about second axis to adjust the pitch angle of blade; actuator has an electric motor which generates torque along the first axis; and a mechanical stage interposed between the electric motor and blade, and designed to convert the torque into rotation of blade about the respective second axes; electric motor is fixed to supporting body.
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