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1.发明申请公开(公告)号：US20230033330A1
公开(公告)日：2023-02-02
申请号：US17789325
申请日：2020-12-24
Applicant: LEONARDO S.P.A.
Inventor： Paolo Pisani , Federico Montagna , Roberto Regonini , Daniele Podda
Abstract: An aircraft is described comprising a transmission unit with a first module and a lubrication system; the first module comprises a casing and a movable member; the lubrication system comprises a header, a nozzle fed with the lubricating fluid and designed to feed the lubricating fluid inside the casing of the first module, a collection tank for the lubricating fluid injected by the nozzle, and recirculation means designed to cause the recirculation of the lubricating fluid from the collection tank to the feed header; the first module comprises a valve available in a first configuration, in which it enables the outflow of said lubricating fluid from said module to the recirculation means when the pressure of the lubricating fluid inside the header is greater than a threshold value; and in a second configuration, in which it fluidically isolates the module from the recirculation means when the pressure of the lubricating fluid inside the header is less than the threshold value.
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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
Applicant: LEONARDO S.P.A.
Inventor： Daniele Podda , Alessandro Rutilio , Stefano Poggi , Fabrizio Losi
Abstract: 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
Applicant: LEONARDO S.P.A.
Inventor： Daniele Podda , Alessandro Rutilio , Stefano Poggi , Fabrizio Losi
Abstract: 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：US12181038B2
公开(公告)日：2024-12-31
申请号：US18549272
申请日：2022-03-01
Applicant: LEONARDO S.P.A.
Inventor： Daniele Podda , Andrea Gabrielli , Federico Montagna , Diego Scaltritti
Abstract: An aircraft capable of hovering is described, comprising a motor member; a rotor connected to the motor member; a transmission shaft rotatable around a first axis and adapted to drive the rotor; and a transmission interposed between the motor member and the rotor and comprising a planetary gear formed by a sun rotatable around a second axis; a crown that is angularly fixed; and two satellites meshing, each, with the crown and the sun, and rotatable around respective third axes, which are, in turn, rotatable around the second axis; and a satellite carrier rotatable around the second axis and comprising two first pins with respect to which the satellites are rotatable around the respective third axes; the transmission comprises an interface, angularly integral with the satellite carrier around the second axis and said transmission shaft around the first axis; the interface being coupled to said satellite carriers and the transmission shaft so as to allow an angular misalignment between the second axis and a portion of the interface.
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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
Applicant: LEONARDO S.P.A.
Inventor： Daniele Podda , Andrea Gabrielli , Roberto Regonini , Federico Montagna , Stefano Poggi
CPC classification number: B64D35/00 , B64C29/0033 , F16C19/18 , F16C19/543 , F16C25/083 , F16C2326/43
Abstract: 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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Patent Agency Ranking
公开(公告)号：US20240270380A1
公开(公告)日：2024-08-15
申请号：US18646214
申请日：2024-04-25
Applicant: LEONARDO S.P.A.
Inventor： Daniele Podda , Alessandro Rutilio , Stefano Poggi , Fabrizio Losi
Abstract: 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：US20240167561A1
公开(公告)日：2024-05-23
申请号：US18549272
申请日：2022-03-01
Applicant: LEONARDO S.P.A.
Inventor： Daniele Podda , Andrea Gabrielli , Federico Montagna , Diego Scaltritti
CPC classification number: F16H57/082 , B64D35/02 , F16H2200/2007
Abstract: An aircraft capable of hovering is described, comprising a motor member; a rotor connected to the motor member; a transmission shaft rotatable around a first axis and adapted to drive the rotor; and a transmission interposed between the motor member and the rotor and comprising a planetary gear formed by a sun rotatable around a second axis; a crown that is angularly fixed; and two satellites meshing, each, with the crown and the sun, and rotatable around respective third axes, which are, in turn, rotatable around the second axis; and a satellite carrier rotatable around the second axis and comprising two first pins with respect to which the satellites are rotatable around the respective third axes; the transmission comprises an interface, angularly integral with the satellite carrier around the second axis and said transmission shaft around the first axis; the interface being coupled to said satellite carriers and the transmission shaft so as to allow an angular misalignment between the second axis and a portion of the interface.
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8.发明授权公开(公告)号：US12134468B2
公开(公告)日：2024-11-05
申请号：US17789325
申请日：2020-12-24
Applicant: LEONARDO S.P.A.
Inventor： Paolo Pisani , Federico Montagna , Roberto Regonini , Daniele Podda
Abstract: An aircraft is described comprising a transmission unit with a first module and a lubrication system; the first module comprises a casing and a movable member; the lubrication system comprises a header, a nozzle fed with the lubricating fluid and designed to feed the lubricating fluid inside the casing of the first module, a collection tank for the lubricating fluid injected by the nozzle, and recirculation means designed to cause the recirculation of the lubricating fluid from the collection tank to the feed header; the first module comprises a valve available in a first configuration, in which it enables the outflow of said lubricating fluid from said module to the recirculation means when the pressure of the lubricating fluid inside the header is greater than a threshold value; and in a second configuration, in which it fluidically isolates the module from the recirculation means when the pressure of the lubricating fluid inside the header is less than the threshold value.
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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
Applicant: LEONARDO S.P.A.
Inventor： Daniele Podda , Alessandro Rutilio , Stefano Poggi , Fabrizio Losi
Abstract: 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：US20240159310A1
公开(公告)日：2024-05-16
申请号：US18551029
申请日：2021-12-20
Applicant: LEONARDO S.P.A.
Inventor： Federico Montagna , Daniele Podda , Diego Scaltritti
IPC: F16H57/08 , B64D35/00 , F16C19/38 , F16C33/30 , F16C33/36 , F16C33/46 , F16C33/48 , F16C33/58 , F16H1/28
CPC classification number: F16H57/082 , B64D35/00 , F16C19/38 , F16C33/303 , F16C33/36 , F16C33/4623 , F16C33/48 , F16C33/585 , F16H1/28 , F16C2326/43 , F16C2361/61 , F16H2057/085
Abstract: A description is provided of a planetary gear comprising a sun rotatable around a first axis, a crown angularly fixed with respect to the first axis; two satellites that are meshing, rotatable around respective second axes; a satellite carrier rotatable around the first axis and comprising at least two first pins with respect to which the satellites are rotatable around respective second axes (I); and a plurality of bearings comprising: a first ring defining a first raceway that is at least partially spherical; a second ring defining a second raceway; and a plurality of rolling bodies shaped as an hourglass rolling on the first spherical raceway and a second raceway; each rolling body being in contact with the raceways at a line with axial ends lying on respective straight lines tilted between them and converging in a point lying on a median plane of the rolling body and on the second axis; the straight lines define a first angle, whose bisector lies on the first median.
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