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公开(公告)号：US20240270381A1
公开(公告)日：2024-08-15
申请号：US18646221
申请日：2024-04-25
申请人： LEONARDO S.P.A.
摘要： An anti-torque rotor includes a mast rotatable about a first axis; a plurality of blades; an element slidable along the first axis, rotating integrally with the mast and operatively connected to the blades. The rotor also has a slidable control rod; a first bearing with a rotatable first ring, a second ring radially internal to the first ring and a plurality of first rolling bodies; a third ring slidable along the first axis and angularly fixed with respect to the first axis; and a locking element arranged in a first configuration, in which it prevents the relative rotation of the second and third rings and is movable from the first configuration to at least one emergency configuration, in which it renders the second ring free to rotate with respect to the third ring, when the first bearing is in a failure condition.
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公开(公告)号：US20220073201A1
公开(公告)日：2022-03-10
申请号：US17414499
申请日：2019-11-28
申请人： LEONARDO S.P.A.
摘要： An aircraft is described comprising: a support element; a shaft rotating about an axis; a pair of oblique rolling bearings mounted so as to couple the shaft to the support element (rotatingly about the axis; the rolling bearings comprising: respective first races cooperating radially in contact with a first component (defined by one from the support element and the shaft; respective second races cooperating radially in contact with a second component (defined by the other from the support element and the shaft; and respective pluralities of rolling elements adapted to roll on the first and second races; the aircraft further comprises a pair of preloaded elastic members, which couple the first races to the first component respectively, axially and in an elastically yielding manner.
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公开(公告)号：US12091168B2
公开(公告)日：2024-09-17
申请号：US17621475
申请日：2020-05-26
申请人： LEONARDO S.P.A.
摘要： An anti-torque rotor includes a mast rotatable about a first axis; a plurality of blades; an element slidable along the first axis, rotating integrally with the mast and operatively connected to the blades. The rotor also has a slidable control rod; a first bearing with a rotatable first ring, a second ring radially internal to the first ring and a plurality of first rolling bodies; a third ring slidable along the first axis and angularly fixed with respect to the first axis; and a locking element arranged in a first configuration, in which it prevents the relative rotation of the second and third rings and is movable from the first configuration to at least one emergency configuration, in which it renders the second ring free to rotate with respect to the third ring, when the first bearing is in a failure condition.
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公开(公告)号：US20220340272A1
公开(公告)日：2022-10-27
申请号：US17621475
申请日：2020-05-26
申请人： LEONARDO S.P.A.
摘要： An anti-torque rotor is described comprising: a mast rotatable about a first axis; a plurality of blades rotatable about respective second axes; an element slidable along the first axis with respect to the mast, rotating integrally with the mast and operatively connected to the blades; a control rod slidable along axis; a first bearing with a first ring rotating integrally with element, a second ring radially internal to the first ring with respect to the first axis and a plurality of first rolling bodies; a third ring sliding integrally with the control rod along the first axis and angularly fixed with respect to the first axis; and a locking element arranged in a standard configuration, in which it prevents the relative rotation of the second and third rings and movable from the standard configuration to at least one emergency configuration, in which it renders the second ring free to rotate with respect to the third ring, when the first bearing is in a failure condition.
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公开(公告)号：US20210163124A1
公开(公告)日：2021-06-03
申请号：US17264180
申请日：2019-07-26
申请人： LEONARDO S.P.A.
发明人： Paolo Pisani , Federico Montagna , Stefano Poggi
摘要： A heat exchanger for a transmission unit of an aircraft is described that comprises: a first module defining a first feed path for a first fluid to be cooled; a second module defining a second feed path for a second cooling fluid; the first and second feed paths being thermally coupled to each other; each second module comprising: at least one cell formed by an inlet for a second cooling fluid; an outlet for the second cooling fluid, which is arrange on the opposite side to the inlet along a first direction; a first wall thermally coupled to the first path; a pair of second walls; and a plurality of fins projecting in a cantilever fashion from the first wall. The heat exchanger further comprises at least a first row of fins, which lie on a plane orthogonal to the first direction, the fins of the first row extending at progressively increasing distances from one of the second walls along a second direction orthogonal to the first direction.
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公开(公告)号：US20240270380A1
公开(公告)日：2024-08-15
申请号：US18646214
申请日：2024-04-25
申请人： LEONARDO S.P.A.
摘要： An anti-torque rotor includes a mast rotatable about a first axis; a plurality of blades; an element slidable along the first axis, rotating integrally with the mast and operatively connected to the blades. The rotor also has a slidable control rod; a first bearing with a rotatable first ring, a second ring radially internal to the first ring and a plurality of first rolling bodies; a third ring slidable along the first axis and angularly fixed with respect to the first axis; and a locking element arranged in a first configuration, in which it prevents the relative rotation of the second and third rings and is movable from the first configuration to at least one emergency configuration, in which it renders the second ring free to rotate with respect to the third ring, when the first bearing is in a failure condition.
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公开(公告)号：US20230234701A1
公开(公告)日：2023-07-27
申请号：US18007579
申请日：2021-05-26
申请人： LEONARDO S.P.A.
发明人： Luigi Bottasso , Stefano Poggi , Phil Woody , Fabrizio Losi , Alessandro Nava , Sergio Sartori , Roberto Simonetta , Alessandro Airoldi , Matteo Boiocchi
摘要： A rotor for an aircraft is described, comprising an input shaft rotatable around a first axis; an output member rotatable around a second axis; a coupling element functionally interposed between the input shaft and the output member and adapted to transmit the motion from the input shaft to the output member; the coupling element is configured to allow, in use, a fixed or variable inclination between the respective first and second axes; the coupling element comprises at least a first corrugated element made of an elastically deformable material; the first corrugated element allows the inclination through elastic deformation.
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公开(公告)号：US11891187B2
公开(公告)日：2024-02-06
申请号：US17414499
申请日：2019-11-28
申请人： LEONARDO S.P.A.
CPC分类号： B64D35/00 , B64C29/0033 , F16C19/18 , F16C19/543 , F16C25/083 , F16C2326/43
摘要： An aircraft is described comprising: a support element; a shaft rotating about an axis; a pair of oblique rolling bearings mounted so as to couple the shaft to the support element rotatingly about the axis; the rolling bearings comprising: respective first races cooperating radially in contact with a first component defined by one from the support element and the shaft; respective second races cooperating radially in contact with a second component defined by the other from the support element and the shaft; and respective pluralities of rolling elements adapted to roll on the first and second races; the aircraft further comprises a pair of preloaded elastic members, which couple the first races to the first component respectively, axially and in an elastically yielding manner.
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公开(公告)号：US11851171B2
公开(公告)日：2023-12-26
申请号：US17264180
申请日：2019-07-26
申请人： LEONARDO S.P.A.
发明人： Paolo Pisani , Federico Montagna , Stefano Poggi
CPC分类号： B64C27/04 , F02C7/14 , F28D9/0068 , F28D2021/0021 , F28D2021/0049 , F28D2021/0089
摘要： A heat exchanger for a transmission unit of an aircraft is described that comprises: a first module defining a first feed path for a first fluid to be cooled; a second module defining a second feed path for a second cooling fluid; the first and second feed paths being thermally coupled to each other; each second module comprising: at least one cell formed by an inlet for a second cooling fluid; an outlet for the second cooling fluid, which is arrange on the opposite side to the inlet along a first direction; a first wall thermally coupled to the first path; a pair of second walls; and a plurality of fins projecting in a cantilever fashion from the first wall. The heat exchanger further comprises at least a first row of fins, which lie on a plane orthogonal to the first direction, the fins of the first row extending at progressively increasing distances from one of the second walls along a second direction orthogonal to the first direction.
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