-
公开(公告)号：US11691723B2
公开(公告)日：2023-07-04
申请号：US17307845
申请日：2021-05-04
申请人： Bell Textron Inc.
发明人： Thomas C. Parham, Jr. , Frank Bradley Stamps , Jouyoung Jason Choi , Albert Gerard Brand , Michael Scott Seifert , Richard E. Rauber , John E. Brunken, Jr.
CPC分类号： B64C29/0033 , B64C11/008 , B64C11/02 , B64C11/32
摘要： A gimbaled rotor assembly for an aircraft. The gimbaled rotor assembly including a static mast; a spherical bearing comprising an inner component and an outer component pivotable relative to each other about a bearing focus, the inner component fixedly coupled to the static mast; a rotor hub rotatably coupled to the outer component, allowing for relative rotation of the rotor hub about a rotor axis and for pivoting together with the outer component about the bearing focus; and a primary hub spring coupling the outer component to the static mast and configured for opposing pivoting of the rotor hub about the bearing focus from a neutral position.
-
公开(公告)号：US20190135410A1
公开(公告)日：2019-05-09
申请号：US15803961
申请日：2017-11-06
CPC分类号： B64C11/008 , B64C11/02 , B64C11/18 , B64C11/20 , B64C39/024 , B64C2201/108 , B64C2201/162 , F01D5/141 , F01D5/147 , F01D5/16 , F05D2240/307
摘要： Toroidal propeller. The propeller includes a hub supporting a plurality of elongate propeller elements in which a tip of a leading propeller element curves into contact with a trailing propeller element to form a closed structure with increased stiffness and reduced acoustic signature.
-
公开(公告)号：US10059440B2
公开(公告)日：2018-08-28
申请号：US15826470
申请日：2017-11-29
CPC分类号： B64C27/58 , B64C11/02 , B64C27/12 , B64C39/024 , B64C2201/024 , B64C2201/042 , B64C2201/108 , B64C2201/162 , B64C2201/165 , H02K7/106 , H02K7/114 , H02K7/14 , H02K49/10
摘要： A propeller alignment device is described. The propeller alignment device can include a second retainer attached to a propeller and a motor. The propeller alignment device can also include a first retainer that does not rotate, but that is aligned with the second retainer. The first retainer can include two or more magnets oppositely orientated relative to each other. The second retainer can also include two or more magnets oppositely orientated relative to each other. As the second retainer rotates relative to the first retainer, the magnets alternatingly align with each other. In the absence of a current applied to the motor, the magnets may magnetically bias the second retainer into a predetermined orientation relative to the first retainer.
-
公开(公告)号：US20180167043A1
公开(公告)日：2018-06-14
申请号：US15374242
申请日：2016-12-09
IPC分类号： H03F3/213 , H03K17/567 , H01L29/20 , H01L29/778 , H03F3/195 , H03F1/02 , H03K3/017 , H03K3/80 , H03K5/08
CPC分类号： H03F3/213 , B64C11/02 , B64C11/06 , B64C11/325 , B64C27/14 , B64C27/32 , B64C27/57 , B64C29/0025 , B64C39/024 , B64C2201/021 , B64C2201/024 , B64C2201/027 , B64C2201/108 , B64D35/00 , H03F3/193 , H03F3/2171 , H03F3/265 , H03F2200/222 , H03F2200/387 , H03F2200/451 , H03F2200/534 , H03F2200/541 , H03K3/017 , H03K5/08 , H03K17/0812
摘要： A gate drive circuit includes a lower limit clamping circuit, an upper limit clamping circuit, and an averaging circuit. The lower limit clamping circuit clamps the input node of a transistor at a minimum voltage with respect to the common node of the transistor, while the upper limit clamping circuit clamps the input node of the transistor at a maximum voltage with respect to the common node of the transistor and the averaging circuit sets the average voltage of the input node with respect to the common node over a specified period of time. The transistor including a common node, an output node and an input node receives the input signal. Controlling the upper limit, lower limit and average value in conjunction with fast transitions between the lower and upper limits controls the duty cycle of the input signal.
-
公开(公告)号：US20180079497A1
公开(公告)日：2018-03-22
申请号：US15826470
申请日：2017-11-29
CPC分类号： B64C27/58 , B64C11/02 , B64C27/12 , B64C39/024 , B64C2201/024 , B64C2201/042 , B64C2201/108 , B64C2201/162 , B64C2201/165 , H02K7/106 , H02K7/114 , H02K7/14 , H02K49/10
摘要： A propeller alignment device is described. The propeller alignment device can include a second retainer attached to a propeller and a motor. The propeller alignment device can also include a first retainer that does not rotate, but that is aligned with the second retainer. The first retainer can include two or more magnets oppositely orientated relative to each other. The second retainer can also include two or more magnets oppositely orientated relative to each other. As the second retainer rotates relative to the first retainer, the magnets alternatingly align with each other. In the absence of a current applied to the motor, the magnets may magnetically bias the second retainer into a predetermined orientation relative to the first retainer.
-
公开(公告)号：US09878784B2
公开(公告)日：2018-01-30
申请号：US14967070
申请日：2015-12-11
CPC分类号： B64C27/58 , B64C11/02 , B64C27/12 , B64C39/024 , B64C2201/024 , B64C2201/042 , B64C2201/108 , B64C2201/162 , B64C2201/165 , H02K7/106 , H02K7/114 , H02K7/14 , H02K49/10
摘要： A propeller alignment device is described. The propeller alignment device can include a second retainer attached to a propeller and a motor. The propeller alignment device can also include a first retainer that does not rotate, but that is aligned with the second retainer. The first retainer can include two or more magnets oppositely orientated relative to each other. The second retainer can also include two or more magnets oppositely orientated relative to each other. As the second retainer rotates relative to the first retainer, the magnets may alternatingly align with each other. In the absence of a current applied to the motor, the magnets may magnetically bias the second retainer into a predetermined orientation relative to the first retainer. The predetermined orientation can be predetermined to correspond to an alignment of the propeller that is desirable (e.g., that minimizes aerodynamic drag on the propeller).
-
7.发明授权公开(公告)号：US09828109B2
公开(公告)日：2017-11-28
申请号：US14338711
申请日：2014-07-23
发明人： Lazar Mitrovic , Richard Ullyott
CPC分类号： B64D41/00 , B64C11/02 , B64C11/44 , B64D15/12 , B64D15/14 , B64D27/10 , F02C7/32 , F05D2260/40311 , F16H3/666
摘要： Apparatus and methods for generating electrical power for powering a device associated with a bladed rotor driven by a gas turbine engine of an aircraft are disclosed. The apparatus includes a rotor shaft coupled the bladed rotor of the aircraft and driven by a turbine shaft of the engine via a speed-reducing gear train. A speed-augmenting power transfer device has an input coupled to the rotor shaft and an output for outputting a rotation speed higher than a rotation speed of the rotor shaft received at the input of the speed-augmenting power transfer device. An electric generator disposed in a hub of the bladed rotor is coupled to the output of the speed-augmenting power transfer device and configured to generate electrical power for the device associated with the bladed rotor.
-
公开(公告)号：US20170334567A1
公开(公告)日：2017-11-23
申请号：US15156664
申请日：2016-05-17
发明人： Mark R. Plickys
CPC分类号： B64D15/12 , B64C11/02 , B64C11/14 , B64C11/20 , B64D2221/00 , H01R39/08 , H01R39/10 , H01R39/58
摘要： A brush wear indicating arrangement is provided. The brush wear indicating arrangement includes an insert, a first electrically conductive brush, and a wear indicator. The insert is disposed within a brush block housing and defines a first aperture. The first electrically conductive brush is movably engaged within the first aperture. The electrically conductive brush is configured to move outward from the first aperture as a wear surface of the first electrically conductive brush wears. The wear indicator is coupled to the first electrically conductive brush. The wear indicator is configured to extend beyond a first insert face of the insert as wear condition of the wear surface of the first electrically conductive brush exceeds a wear threshold.
-
公开(公告)号：US20170291701A1
公开(公告)日：2017-10-12
申请号：US15625598
申请日：2017-06-16
发明人： Robert Wardlaw , Werner Idler , John R. McCullough , Patrick Ryan Tisdale , Frank Bradley Stamps , James L. Braswell, JR. , Ronald J. Measom , Paul K. Oldroyd
CPC分类号： B29C70/30 , B29C70/202 , B29C70/38 , B29C70/382 , B29L2031/08 , B29L2031/082 , B32B5/12 , B32B5/22 , B32B5/26 , B32B37/02 , B32B37/16 , B32B37/18 , B32B38/1808 , B32B2603/00 , B64C11/02 , B64C11/04 , B64C11/12 , B64C27/32 , B64C27/33 , B64C27/48 , F01D5/02 , H05K999/99 , Y10T29/49316 , Y10T156/1062
摘要： An apparatus comprising a soft in plane rotor yoke comprising two longitudinal side portions connected together via two outboard portions, wherein the outboard portions comprise a plurality of first layers formed of a first composite fabric material having a plurality of first fibers oriented in a first direction, and a plurality of second layers formed of a second composite fabric material having a plurality of second fibers oriented in a second direction. Included is an apparatus comprising a soft in plane rotor comprising two longitudinal side portions connected together via two outboard portions, wherein the outboard portions comprise a plurality of first layers formed of a first composite fabric material, and a plurality of second layers formed of a second composite fabric material, wherein the soft in plane rotor yoke does not comprise any narrow steered slit tape or filament windings.
-
公开(公告)号：US20170291689A1
公开(公告)日：2017-10-12
申请号：US15512775
申请日：2015-09-17
发明人： Lance Halcom , Bryan Kenneth Baskin
CPC分类号： B64C11/001 , B64C11/02 , B64C27/10 , B64C27/20 , B64C27/30 , B64C27/82 , B64C2027/8236 , B64C2027/8254 , B64C2027/8272 , B64C2027/8281
摘要： A diverter duct for a propeller includes a second duct element having a semi-annular wedge shape, which is pivotably coupled to the first duct element, a first drive structure configured to drive a pivoting of the second duct element relative to the first duct element and a second drive structure configured to drive a rotation of the first and second duct elements about an axis of rotation of the propeller.
-
-
-
-
-
-
-
-
-
搜索结果
116 条记录 (耗时 0.02 秒)
