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

IPC: B64C27/32 ,  B64D41/00 ,  B64C27/12 ,  B64C27/82 ,  B64D15/12 ,  F16H1/46

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.

公开(公告)号：US11780575B2

公开(公告)日：2023-10-10

申请号：US16765318

申请日：2018-12-21

Applicant: LEONARDO S.P.A.

Inventor： Massimo Brunetti ,  Luigi Maria Bottasso ,  Chee Su Goh ,  Gary Weller

IPC: B64C27/82 ,  B64C27/08 ,  B64C27/14 ,  B64D27/02 ,  B64U10/10

CPC classification number: B64C27/82 ,  B64C27/08 ,  B64C27/14 ,  B64C2027/8227 ,  B64C2027/8254 ,  B64D2027/026 ,  B64U10/10

Abstract: An anti-torque system (10) for a helicopter (1) is described that comprises: an electric power supply unit (15); at least one first rotor (17), operatively connected to an electric power supply unit (15) and operable by the electric power supply unit (15) so as to rotate with a first variable angular speed; and at least one second rotor (25) operatively connected to electric power supply unit (15) and operable by the electric power supply unit (15) so as to rotate with a second variable angular speed.

公开(公告)号：US12012204B2

公开(公告)日：2024-06-18

申请号：US17789871

申请日：2020-12-28

Applicant: LEONARDO S.P.A. ,  POLITECNICO DI MILANO

Inventor： Enrico Bellussi ,  Massimo Brunetti ,  Giovanni Facchini ,  Nicola Ostuni ,  Francesco Castelli Dezza ,  Marco Mauri ,  Steven Chatterton ,  Nicola Toscani

IPC: B64C27/473 ,  B64D15/12 ,  B64D45/00 ,  F16C19/06 ,  H01F21/04 ,  B64C27/06

CPC classification number: B64C27/473 ,  B64D15/12 ,  B64D45/00 ,  F16C19/06 ,  H01F21/04 ,  B64C27/06 ,  F16C2326/43

Abstract: A rotor for an aircraft is described having: a support angularly fixed with respect to an axis and housing a power source; a unit rotatable about axis and housing an electrical load of the resistive type; and a power supply system for the electrical load (21, 24) and comprising: a first transformer electrically interposed between the power source and the load; the first transformer comprises: a first winding arranged on the support and a second winding arranged on the unit, a stator carried by the support, rotationally fixed with respect to axis and to which the first winding is fixed; and a rotor operatively connected to the unit and to which the second winding is fixed; the power supply system comprises a capacitive circuit electrically connected to the first transformer, so as to reduce the reactive power absorbed by the rotary transformer.

公开(公告)号：US20230050072A1

公开(公告)日：2023-02-16

申请号：US17789871

申请日：2020-12-28

Applicant: LEONARDO S.P.A. ,  POLITECNICO DI MILANO

Inventor： Enrico Bellussi ,  Massimo Brunetti ,  Giovanni Facchini ,  Nicola Ostuni ,  Francesco Castelli Dezza ,  Marco Mauri ,  Steven Chatterton ,  Nicola Toscani

IPC: B64C27/473 ,  B64D15/12 ,  B64D45/00 ,  F16C19/06 ,  H01F21/04

Abstract: A rotor for an aircraft is described having: a support angularly fixed with respect to an axis and housing a power source; a unit rotatable about axis and housing an electrical load of the resistive type; and a power supply system for the electrical load and comprising: a first transformer electrically interposed between the power source and the load; the first transformer comprises: a first winding arranged on the support and a second winding arranged on the unit, a stator carried by the support, rotationally fixed with respect to axis and to which the first winding is fixed; and a rotor operatively connected to the unit and to which the second winding is fixed; the power supply system comprises a capacitive circuit electrically connected to the first transformer, so as to reduce the reactive power absorbed by the rotary transformer.

公开(公告)号：US11174012B2

公开(公告)日：2021-11-16

申请号：US16473672

申请日：2017-12-29

Applicant: LEONARDO S.P.A.

Inventor： Massimo Brunetti

IPC: B64C27/12 ,  B64C27/68 ,  H02K16/02

Abstract: There is disclosed a rotor for an aircraft capable of hovering, comprising: a stator; a rotatable element, which is rotatable about an axis with respect to stator; a blade, which is connected with element; a support element, which supports a source of a magnetic field and is either stationary or driven in rotation at a first rotational speed; and a first electric circuit, which is angularly integral with element and can be driven in rotation at a second rotational speed different from first rotational speed; first electric circuit being electromagnetically coupled with source so that an electromotive force is magnetically induced in first electric circuit and an first electric current flows in first electric circuit; rotor further comprises a second electric circuit which is either stationary or driven in rotation at a first rotational speed, and a sensor generating a signal associated to a back electromotive force induced on second electric circuit.

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

IPC: B64C27/12 ,  B64C27/00

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.