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公开(公告)号：US12012201B2
公开(公告)日：2024-06-18
申请号：US18006106
申请日：2021-07-15
CPC分类号： B64C11/06 , F01D7/00 , F04D29/323 , F04D29/644 , F05D2260/70
摘要： An assembly for an aircraft turbine engine is provided. The assembly generally includes an un-ducted propeller blade of which the root has a bulbous portion; a system for setting the pitch of the blade about a pitch setting axis, the pitch setting system including a cup, configured to be placed inside the outer casing, has a flared open top end for axial insertion of the root and in which the root of the blade can be axially affixed by a locking member; and at least one radial retention prong in a radial space reserved between the wall of the cup and the root.
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公开(公告)号：US11851157B2
公开(公告)日：2023-12-26
申请号：US18006130
申请日：2021-07-15
CPC分类号： B64C11/06 , F04D29/323
摘要： A system for controlling the pitch of a propeller blade for an aircraft turbine engine, including a cup having an annular wall extending about an axis intended to be a pitch setting axis of the blade, and a bottom wall configured so as to cooperate in a form-fitting manner with a free end of the root so that the cup is prevented from rotating relative to the root about the axis, and a locking ring that is configured so as to be mounted within the cup and to cooperate respectively with the root and the annular wall of the cup in order to ensure axial retention of the root in the cup.
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3.发明公开公开(公告)号：US20230257105A1
公开(公告)日：2023-08-17
申请号：US18006285
申请日：2021-07-15
IPC分类号： B64C11/06
CPC分类号： B64C11/06 , F04D29/323
摘要： A system for controlling the pitch setting of a propeller blade for an aircraft turbine engine is provided. The system generally including a blade having an airfoil connected to a root; a cup having an annular wall extending about a pitch axis of the blade and a lower axial end enclosed by a bottom wall; a locking ring that extends around the root and inside the cup; a safety element that ensures the retention of the root relative to the cup. The at least one safety element can have a generally elongate shape and can pass through aligned holes in the bottom wall of the cup and in the free end of the root.
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公开(公告)号：US09938000B2
公开(公告)日：2018-04-10
申请号：US14899010
申请日：2014-06-12
申请人： SNECMA
CPC分类号： B64C11/346 , B64C11/06 , B64D2027/005 , F04D29/323 , F04D29/366 , Y02T50/66
摘要： A pivot for an air propeller blade, the pivot including a rotary support for mounting radially on a propeller hub while being suitable for pivoting about a pivot axis; and a blade support including a housing for receiving a blade root and at least one arm extending laterally relative to the pivot axis and carrying a flyweight forming a counterweight; the arm and its flyweight presenting the general geometrical shape of a spherical cap.
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公开(公告)号：US20180073375A1
公开(公告)日：2018-03-15
申请号：US15552002
申请日：2015-10-27
发明人： Kenichiro IWAKIRI
CPC分类号： F01D7/00 , F01D5/02 , F01D5/025 , F01D5/143 , F01D25/24 , F04D29/164 , F04D29/323 , F05D2250/241
摘要： A rotary machine comprises a hub including: a blade-facing hub portion including a first blade-facing surface which faces a spherical hub-side end surface of a variable blade and which has a first spherical region having a spherical shape; an upstream hub portion disposed upstream of the blade-facing hub portion in an axial direction of the hub and having a first outer-peripheral surface being adjacent to the first blade-facing surface in the axial direction; and a downstream hub portion disposed downstream of the blade-facing hub portion in the axial direction and having a second outer peripheral surface being adjacent to the first blade-facing surface in the axial direction. At least one of following condition (a) or (b) is satisfied: (a) a downstream end of the first outer peripheral surface is disposed on an outer side of an upstream end of the first blade-facing surface in the radial direction of the hub; (b) an upstream end of the second outer peripheral surface is disposed on an outer side of a downstream end of the first blade-facing surface in the radial direction of the hub.
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公开(公告)号：US09903375B2
公开(公告)日：2018-02-27
申请号：US14430729
申请日：2013-09-18
申请人： SNECMA
发明人： Olivier Belmonte , Augustin Curlier
CPC分类号： F04D19/024 , B64C11/06 , B64D2027/005 , F02K3/072 , F04D19/002 , F04D27/002 , F04D29/323 , Y02T50/66 , Y10T29/49321
摘要： A fan including a system for holding blades having variable pitch, in which the bases of the blades are mounted onto radial shafts of a rotor of the fan by pivots, is provided. The system includes a main body capable of being attached onto the rotor; and at least one holding arm mounted onto the main body and capable of extending inside a pivot so as to engage with the pivot in order to lock the movement of the pivot along the axis of the shaft on which the holding arm is mounted.
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公开(公告)号：US09884675B2
公开(公告)日：2018-02-06
申请号：US14154411
申请日：2014-01-14
申请人： SNECMA
发明人： Augustin Curlier , Olivier Belmonte
CPC分类号： B64C11/38 , B64C11/306 , F01D7/00 , F02K3/072 , F04D29/323 , F04D29/362 , F05D2220/36 , F05D2260/50 , F05D2270/64 , Y02T50/673
摘要： A system includes a linear-displacement fluidic actuator coaxial with the propeller, and a transmission device connecting the actuator to the blades that are to be controlled. The transmission device includes at least two radial arms arranged symmetrically with respect to the actuator and connected, on the inside, to a translationally mobile part of the actuator and, on the outside, to a translationally movable rotary transmission ring which is connected to the pivot pins of the blades by intermediate connecting mechanisms that convert the translational movement of the rotary ring brought about by the actuator into a rotation of the blades of the propeller.
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公开(公告)号：US09879552B2
公开(公告)日：2018-01-30
申请号：US13880621
申请日：2011-09-30
CPC分类号： F01D7/00 , F04D29/323 , F04D29/563 , F05D2220/36 , F05D2260/50 , F05D2260/79
摘要： A hydraulic device for changing the pitch of a propeller including a piston rod actuated by a hydraulic fluid, the piston rod including at its end a clevis mount able to provide a connection for transmitting the movements of the piston rod so as to change the pitch of at least one propeller, a thread nut held in position on the clevis of the piston rod by a fastener, the nut being able to collaborate with a threaded rod in order to provide a connection.
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公开(公告)号：US20170276014A1
公开(公告)日：2017-09-28
申请号：US15079432
申请日：2016-03-24
CPC分类号： F01D17/162 , F01D7/00 , F01D9/04 , F01D9/042 , F01D17/12 , F01D17/14 , F01D17/165 , F01D25/34 , F04D29/323 , F04D29/563 , F05D2220/32 , F05D2240/128 , F16H49/001 , Y02T50/671 , Y02T50/673
摘要： An actuator system including a harmonic drive operable to drive a variable vane system of a gas turbine engine.
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公开(公告)号：US09732764B2
公开(公告)日：2017-08-15
申请号：US13379869
申请日：2010-06-23
CPC分类号： F04D29/563 , F01D17/16 , F01D17/24 , F02C9/22 , F04D27/0246 , F04D29/323 , F05D2260/79
摘要： A device for controlling positioning of variable-geometry equipment of a turbomachine, including a computer, an actuator of variable geometry driven by the computer, and a drive train, the actuator including moving parts including a sensor for measuring its elongation, the drive train being connected at one of its ends to a point of attachment of the moving parts and at another end to a point of attachment of the equipment, the point of attachment moving under action of the actuator along a travel limited by an end stop and the drive train being elastically deformable under the action of the actuator when the point of attachment is against the end stop. An elongation instruction supplied by the computer to the moving parts is defined as a difference with respect to the value of the elongation of the moving parts that corresponds to contact between the point of attachment and the end stop.
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