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公开(公告)号：US12132438B2
公开(公告)日：2024-10-29
申请号：US17941709
申请日：2022-09-09
发明人： Stephen Minshull , Parminder Sangha
IPC分类号： H02P27/06 , F01D7/00 , F02C6/00 , H02P9/00 , H02P9/08 , H02P101/25 , H02P101/30
CPC分类号： H02P9/08 , F01D7/00 , F02C6/00 , H02P9/006 , H02P2101/25 , H02P2101/30
摘要： A propulsion system (100) comprises: a generator (30) driven by a shaft (22) of a thermal engine (20) and configured to generate electrical power; an induction motor (60) that is electrically coupled to the output of the generator (30) and is configured to generate a rotational output in response to electrical power provided by the generator (30); a generator control unit (40) that is configured to control an output voltage of the generator (30) to limit a current supplied to the induction motor (60) during start-up of the propulsion system (100); and a switch (50) that is electrically coupled between the generator (30) and the induction motor (60), wherein the switch (50) is controllable by the generator control unit (40).
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公开(公告)号：US20240253770A1
公开(公告)日：2024-08-01
申请号：US18564504
申请日：2022-05-23
CPC分类号： B64C11/38 , B64C11/44 , F01D7/00 , F05D2260/406 , F05D2260/79
摘要： The present invention relates to a mechanism for changing the pitch of a propeller of a turbine engine, the mechanism comprising an electrohydraulic actuator that comprises: —an electric machine comprising a rotatable actuator shaft; —a pumping assembly comprising two hydraulic axial piston pumps, each comprising: o a barrel housed in a cavity filled with hydraulic fluid; o a set of cylinders formed in the barrel, each cylinder housing a translatable piston and comprising an inlet port and a delivery port; o and an inclined plate, the plate of a first pump comprising a crescent-shaped inlet port for circulating the hydraulic fluid when the plate is rotated in a first direction, and the plate of a second pump comprising a crescent-shaped inlet port for circulating the hydraulic fluid when the plate is rotated in a second direction.
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公开(公告)号：US20240239474A1
公开(公告)日：2024-07-18
申请号：US18564493
申请日：2022-05-23
CPC分类号： B64C11/38 , B64C11/44 , F01D7/00 , F05D2260/40311 , F05D2260/76 , F05D2260/79
摘要： The present invention relates to a pitch change mechanism for a turbine engine propeller (10) comprising: — an electric machine (29) fixedly mounted on a stator portion of the turbine engine and comprising an actuator shaft (21); — an axial piston hydraulic pump (20) suitable for pressurising a hydraulic fluid, the hydraulic pump comprising a body (22) driven by the propeller (10); a barrel (23) housing a set of pistons (24) each comprising a sliding block (25); and a plate (26) that is tilted with respect to the axis of rotation, each sliding block bearing on the plate, one of the plate (26) and the barrel (23) being fixedly connected to the stator portion of the turbine engine and the other of the plate (26) and the barrel (23) being fixed to the actuator shaft (21) for conjoint rotation.
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公开(公告)号：US12006844B2
公开(公告)日：2024-06-11
申请号：US17757023
申请日：2020-12-03
IPC分类号： F01D7/00 , F01D25/16 , F16B21/18 , F16C19/06 , F16C35/063
CPC分类号： F01D7/00 , F01D25/16 , F16B21/186 , F16C19/06 , F16C35/063 , F05D2260/30 , F05D2260/70
摘要： The invention relates to a blade pivot with adjustable orientation for a turbomachine fan hub, comprising a stud having means for retaining a fan blade root and coupling means for the transmission of a torsional torque, a rolling bearing for absorbing the centrifugal forces having an inner bushing mounted in transverse abutment against an external radial portion of the stud, a ring for radially retaining the stud relative to the rolling bearing housed in an annular groove formed in the stud, a plurality of clamping parts each mounted in transverse abutment against the retaining ring and in radial abutment against the inner bushing of the rolling bearing, and a clamping nut screwed onto an outer thread of the stud to come into conical abutment against the clamping parts such that said clamping parts ensure a clamping of the inner bushing of the rolling bearing on the stud and a clamping.
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公开(公告)号：US20240133300A1
公开(公告)日：2024-04-25
申请号：US17769617
申请日：2020-10-15
CPC分类号： F01D5/3007 , B64C11/06 , F01D5/326 , F01D7/00 , F05D2220/36
摘要： Assembly for a turbomachine blade, comprising: a fastener (9) defining a pocket (10) for receiving a blade root (11), and comprising two flanks defining between them a passage leading into the pocket (10) and forming stops preventing the root (11) from exiting from the pocket (10) via the passage, a shim (26a, 26b) adapted to be received in the pocket (10) with the root (11), the shim (26a, 26b) having a first support surface (28a, 28b) to bear on the root (11) and a second support surface (30a, 30b) opposite the first support surface (28a, 28b) to bear against the fastener (9), the support surfaces being fixed relative to each other and oriented such that movement of the shim (26a, 26b) in the pocket (10) relative to the fastener (9) varies the value of force exerted by the shim (26a, 26b) on the root (11).
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公开(公告)号：US11851158B2
公开(公告)日：2023-12-26
申请号：US17991302
申请日：2022-11-21
发明人： Daniel A. Niergarth
CPC分类号： B64C11/32 , B64C11/346 , F01D7/00 , F04D29/323 , F05D2220/36 , F05D2260/74
摘要： A variable pitch fan assembly includes a plurality of rotating trunnion assemblies, a plurality of counterweight assemblies, a first unison ring gear engaged with the trunnion assemblies, and a second unison ring member that restricts out of synch movement of the counterweights relative to each other.
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公开(公告)号：US11821338B2
公开(公告)日：2023-11-21
申请号：US17642359
申请日：2020-09-11
申请人： Alexandru Balan
发明人： Alexandru Balan
CPC分类号： F01D7/00 , B64C29/0033 , F16H7/08 , F05D2220/90 , F16H2007/0865
摘要： The present invention relates generally to propulsion systems and, more specifically, to propulsion systems configured to vector and provide directional thrust such as those that may be used in aircraft or watercraft. Such propulsion systems may be used in connection with unmanned aerial vehicles, other aircraft, or various watercraft including submersibles.
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公开(公告)号：US11807372B2
公开(公告)日：2023-11-07
申请号：US17969713
申请日：2022-10-20
发明人： Hisao Haga
IPC分类号： B64D27/24 , B64C11/30 , B60L58/15 , B60L58/13 , B60L58/14 , B60L58/12 , B64D27/02 , F02C9/58 , F01D7/00
CPC分类号： B64D27/24 , B60L58/12 , B60L58/13 , B60L58/14 , B60L58/15 , B64C11/305 , B60L2200/10 , B64C11/30 , B64D2027/026 , B64D2221/00 , F01D7/00 , F02C9/58
摘要： A control device (1) of a flying object includes a generator (11), a driving source (12), a battery (13), an electric motor (3), a rotor blade (4), a battery status determination part (5), a variable pitch mechanism (6), and a pitch change control part (7). The electric motor (3) is driven by electric power supplied from at least one of the generator (11) and the battery (13). The rotor blade (4) is driven by the electric motor (3). The battery status determination part (5) determines a state of charge of the battery (13). The variable pitch mechanism (6) changes a pitch of the rotor blade (4). The pitch change control part (7) determines whether the pitch of the rotor blade (4) is changed based on a charging rate of the battery determined by the battery status determination part (5).
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公开(公告)号：US20230294817A1
公开(公告)日：2023-09-21
申请号：US18006350
申请日：2021-07-15
发明人： Vincent JOUDON , Clément COTTET , Vivien Mickaël COURTIER , Laurent JABLONSKI , Régis Eugène Henri SERVANT
CPC分类号： B64C11/30 , F01D7/00 , F01D5/30 , F05D2260/70
摘要： Disclosed is a variable pitch propeller blade for an aircraft turbine engine. The blade includes an airfoil connected to a root, the root having a body housed in an annular barrel that extends around a pitch axis of the blade, the body including a free end opposite the airfoil; a shoulder towards the airfoil; and a bulb located between the free end and the shoulder. The bulb can have a cross-section, referred to as the middle section, that has a maximum value Sm, and the barrel can be affixed to the body and covers and matches at least a portion of the bulb and the shoulder.
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公开(公告)号：US11713687B1
公开(公告)日：2023-08-01
申请号：US17696995
申请日：2022-03-17
发明人： Gregory L. Detweiler
CPC分类号： F01D7/00 , B64C11/28 , B64C11/30 , F01D5/021 , F05D2220/36 , F05D2260/70
摘要： An engine defining a longitudinal axis includes: a turbomachine; a fan drivingly coupled with the turbomachine, the fan being a forward thrust fan and having: a hub; a plurality of fan blades, the plurality of fan blades comprising a first fan blade; and a flapping hinge integrated into the first fan blade or coupled to the fan blade, at least a portion of the first fan blade moveable about the flapping hinge to define a variable angle with the longitudinal axis.
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