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公开(公告)号：US10384770B2
公开(公告)日：2019-08-20
申请号：US15323653
申请日：2015-07-03
申请人： LEONARDO S.p.A.
摘要： A helicopter is described that comprises: a rotor; a fuselage; a drive transmission unit operatively connected to the rotor; a support body, which supports the transmission unit; and constraining means interposed between the support body and the fuselage; the constraining means in turn comprise a crosspiece connected in a fixed manner with respect to the support body and having a first lying plane; the crosspiece is formed in part by a metallic material and in part by a visco-elastic material.
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2.发明授权公开(公告)号：US10882609B2
公开(公告)日：2021-01-05
申请号：US16076557
申请日：2017-02-22
申请人： LEONARDO S.P.A.
发明人： Luigi Maria Bottasso
摘要： A damping device is described that is designed to counter the transmission of vibrations to a further element and comprises: a beam element, which extends mainly parallel to an axis, is constrained to the further element and is designed to flexurally oscillate, in use, in a plane parallel to the axis to counter the transmission of vibrations to the further element; an actuator, which comprises a transmission element operatively connected to the beam element and extending mainly along the axis; the actuator being controllable to apply a direct tensile or compressive load along the axis on the transmission element that is variable according to the frequency of the vibrations to be dampened.
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公开(公告)号：US20190193850A1
公开(公告)日：2019-06-27
申请号：US16328069
申请日：2017-09-07
申请人： LEONARDO S.P.A.
发明人： Luigi Maria Bottasso
CPC分类号： B64C27/463 , B64C27/04 , B64C27/59 , B64C27/72 , B64C2027/7211
摘要： A rotor for a hover-capable aircraft is described that comprises: a hub rotatable about a first axis and at least two blades hinged to the hub; each blade comprises a main portion hinged to the hub and a tip portion, which is arranged radially outermost with respect to first axis with respect to the corresponding main portion; the tip portion of each blade is movable with respect to the corresponding main portion of that blade; the tip portion of each blade is selectively movable with respect to the corresponding main portion of that blade between a first position, in which it defines a dihedral or anhedral angle with respect to the corresponding main portion; and a second position, in which it defines a positive or negative sweep angle with respect to the corresponding main portion.
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公开(公告)号：US20170137120A1
公开(公告)日：2017-05-18
申请号：US15323653
申请日：2015-07-03
申请人： LEONARDO S.p.A.
CPC分类号： B64C27/001 , B64C27/12 , B64C27/82 , B64C2027/002
摘要： A helicopter is described that comprises: a rotor; a fuselage; a drive transmission unit operatively connected to the rotor; a support body, which supports the transmission unit; and constraining means interposed between the support body and the fuselage; the constraining means in turn comprise a crosspiece connected in a fixed manner with respect to the support body and having a first lying plane; the crosspiece is formed in part by a metallic material and in part by a visco-elastic material.
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公开(公告)号：US11780575B2
公开(公告)日：2023-10-10
申请号：US16765318
申请日：2018-12-21
申请人： LEONARDO S.P.A.
CPC分类号： B64C27/82 , B64C27/08 , B64C27/14 , B64C2027/8227 , B64C2027/8254 , B64D2027/026 , B64U10/10
摘要： 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.
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公开(公告)号：US11618558B2
公开(公告)日：2023-04-04
申请号：US17237520
申请日：2021-04-22
申请人： LEONARDO S.P.A.
发明人： Luigi Maria Bottasso
摘要： A rotor for a hover-capable aircraft is described that comprises: a hub rotatable about a first axis and at least two blades hinged to the hub; each blade comprises a main portion hinged to the hub and a tip portion, which is arranged radially outermost with respect to first axis with respect to the corresponding main portion; the tip portion of each blade is movable with respect to the corresponding main portion of that blade; the tip portion of each blade is selectively movable with respect to the corresponding main portion of that blade between a first position, in which it defines a dihedral or anhedral angle with respect to the corresponding main portion; and a second position, in which it defines a positive or negative sweep angle with respect to the corresponding main portion.
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公开(公告)号：US20210253229A1
公开(公告)日：2021-08-19
申请号：US17237520
申请日：2021-04-22
申请人： LEONARDO S.P.A.
发明人： Luigi Maria Bottasso
摘要： A rotor for a hover-capable aircraft is described that comprises: a hub rotatable about a first axis and at least two blades hinged to the hub; each blade comprises a main portion hinged to the hub and a tip portion, which is arranged radially outermost with respect to first axis with respect to the corresponding main portion; the tip portion of each blade is movable with respect to the corresponding main portion of that blade; the tip portion of each blade is selectively movable with respect to the corresponding main portion of that blade between a first position, in which it defines a dihedral or anhedral angle with respect to the corresponding main portion; and a second position, in which it defines a positive or negative sweep angle with respect to the corresponding main portion.
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公开(公告)号：US11623744B2
公开(公告)日：2023-04-11
申请号：US17237813
申请日：2021-04-22
申请人： LEONARDO S.P.A.
发明人： Luigi Maria Bottasso
摘要： A rotor for a hover-capable aircraft is described that comprises: a hub rotatable about a first axis and at least two blades hinged to the hub; each blade comprises a main portion hinged to the hub and a tip portion, which is arranged radially outermost with respect to first axis with respect to the corresponding main portion; the tip portion of each blade is movable with respect to the corresponding main portion of that blade; the tip portion of each blade is selectively movable with respect to the corresponding main portion of that blade between a first position, in which it defines a dihedral or anhedral angle with respect to the corresponding main portion; and a second position, in which it defines a positive or negative sweep angle with respect to the corresponding main portion.
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公开(公告)号：US20210253230A1
公开(公告)日：2021-08-19
申请号：US17237813
申请日：2021-04-22
申请人： LEONARDO S.P.A.
发明人： Luigi Maria Bottasso
摘要： A rotor for a hover-capable aircraft is described that comprises: a hub rotatable about a first axis and at least two blades hinged to the hub; each blade comprises a main portion hinged to the hub and a tip portion, which is arranged radially outermost with respect to first axis with respect to the corresponding main portion; the tip portion of each blade is movable with respect to the corresponding main portion of that blade; the tip portion of each blade is selectively movable with respect to the corresponding main portion of that blade between a first position, in which it defines a dihedral or anhedral angle with respect to the corresponding main portion; and a second position, in which it defines a positive or negative sweep angle with respect to the corresponding main portion.
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公开(公告)号：US11014660B2
公开(公告)日：2021-05-25
申请号：US16328069
申请日：2017-09-07
申请人： LEONARDO S.P.A.
发明人： Luigi Maria Bottasso
摘要： A rotor for a hover-capable aircraft includes a hub rotatable about a first axis and at least two blades hinged to the hub. Each blade has a main portion hinged to the hub and a tip portion, which is arranged radially outermost with respect to first axis with respect to the corresponding main portion. The tip portion of each blade is movable with respect to the corresponding main portion of that blade. The tip portion of each blade is selectively movable with respect to the corresponding main portion of that blade between a first position, in which it defines a dihedral or anhedral angle with respect to the corresponding main portion; and a second position, in which it defines a positive or negative sweep angle with respect to the corresponding main portion.
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