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公开(公告)号：US20240345605A1
公开(公告)日：2024-10-17
申请号：US18614037
申请日：2024-03-22
CPC分类号： G05D7/0126 , B21F3/02
摘要： A method for producing a nonlinear cylindrical spring produced by winding or coiling a spring wire having wire diameters varying over its length, and formed from a blank with a constant diameter. A drum roller shapes the blank and, between the outer lateral surface of an inner rotor driven in rotation about a central longitudinal axis and the inner lateral surface of a drum concentric with the rotor, has an annular gap which tapers continuously from an input side to an output side, the clear opening width of which, viewed in the radial direction, is greater than the diameter of the blank on the input side and equal to or smaller than the minimum wire diameter of the spring wire on the output side, and the blank is shaped by moving it into the annular gap from the input side to the output side.
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公开(公告)号：US20240334593A1
公开(公告)日：2024-10-03
申请号：US18591917
申请日：2024-02-29
IPC分类号： H05K1/02
CPC分类号： H05K1/0271 , H05K2201/10409 , H05K2201/10424
摘要： A holding down construction for a printed circuit board includes a grid structure having first ribs and second ribs arranged in a crossed manner, wherein the first ribs and the second ribs form intersections, and wherein the grid structure has an upper side and a lower side. The holding down construction further includes screwing posts attached to the grid structure and configured to be screwed against a printed circuit board and/or another component, and contact structures attached to the lower side of the grid structure and configured to lie against and exert a force against the printed circuit board.
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公开(公告)号：US20240329143A1
公开(公告)日：2024-10-03
申请号：US18605362
申请日：2024-03-14
发明人： Máté BÉRCES , Csaba BLEUER
IPC分类号： G01R31/3835 , G01R31/36 , G01R31/389 , H01M10/48
CPC分类号： G01R31/3835 , G01R31/3644 , G01R31/389 , H01M10/48
摘要： A fault monitoring device for a power system includes: a first parallel circuit of resistors that includes a first branch and a second branch both connected to a high side voltage rail of the power system; and a second parallel circuit of resistors that includes a third branch and a fourth branch both connected to a low side voltage rail of the power system. The second branch includes at least two electrical resistors arranged in series, wherein at least one electrical resistor may be short-circuited by a first switch. The fourth branch includes at least two electrical resistors arranged in series, wherein at least one electrical resistor may be short-circuited by a second switch. A controller is configured to selectively switch the switches to provide for different states of the circuits and determine resistance values for the high side and low side insulation resistances of the power system.
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公开(公告)号：US20240263942A1
公开(公告)日：2024-08-08
申请号：US18424181
申请日：2024-01-26
IPC分类号： G01B21/20
CPC分类号： G01B21/20
摘要： A method for determining a shape of a mistuned blade of an impeller includes: providing a nominal blade with radially threaded-on profile elements; providing an initially mistuned blade with profile elements, the mistuned blade having a reduced or increased thickness at at least one of the profile elements compared with the nominal blade; determining the shape of the nominal blade in a hot state; determining the shape of the mistuned blade in the hot state; comparing the two shapes and determining a parameter of the mistuned blade which differs from the corresponding parameter for the nominal blade in the hot state; and changing the value of this parameter for the mistuned blade in the cold state such that the difference between the parameter for the mistuned blade and the nominal blade in the hot state no longer exists.
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公开(公告)号：US20240250527A1
公开(公告)日：2024-07-25
申请号：US18101213
申请日：2023-01-25
发明人： Patrick MARTIN , Erik MUNEVAR
CPC分类号： H02J1/10 , B64C29/0008 , B64D41/00 , G01R19/10 , H02M3/02 , B64D2221/00
摘要： A power supply for an aircraft comprises: an input configured to receive electrical power from an energy source, an output for supplying electrical power, a plurality of converters, each of which being electrically connected to the input to receive electrical power from the input and being configured to convert the electrical power and to provide the converted electrical power to the output, and a control unit being configured to individually control each of the plurality of converters.
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公开(公告)号：US12040723B2
公开(公告)日：2024-07-16
申请号：US17604845
申请日：2020-05-05
发明人： Marco Bohlländer
摘要： A power Converter having power semiconductor components is disclosed herein, wherein a DC-link capacitor has a capacitance of less than 3 μF and is not designed as a separate electrical device of the power converter, and wherein the clock frequency is greater than 1 MHz. A vehicle, (e.g., an aircraft), including a power Converter of this kind is also described.
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公开(公告)号：US12040669B1
公开(公告)日：2024-07-16
申请号：US18201590
申请日：2023-05-24
CPC分类号： H02K21/24 , B64D27/24 , B64D33/08 , H02K1/145 , H02K3/24 , B64C29/0033 , H02K2201/12 , H02K2213/03
摘要： A vertical take-off and landing (VTOL) aircraft includes at least one electrical propulsion unit (EPU). An EPU of the at least one EPU includes a propeller or a fan and a transverse flux electric motor. The electric motor includes a stator having coils configured to carry current and a rotor arranged to interact with the stator, such that a torque for driving rotation of the propeller or the fan is generated. The rotor is configured to supply a flow of air to the coils, such that heat is removed from the coils. The coils are directly exposed to the flow of air, such that heat is exchanged directly from the coils to the flow of air. Each coil includes an effective cooling surface area directly exposed to the flow of air. An effective cooling surface area is at least 20% of a total surface area of the respective coil.
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公开(公告)号：US12018570B2
公开(公告)日：2024-06-25
申请号：US18252799
申请日：2021-10-29
发明人： Bernd Becker , Henner Schrapp
CPC分类号： F01D21/003 , F01D9/041 , F01D5/20 , F01D5/30 , F01D5/303 , F01D17/14 , F01D17/18 , F05D2240/12 , F05D2240/30 , F05D2240/301 , F05D2270/804
摘要： A guide vane wheel of a turbomachine, has a plurality of guide vanes, forming a blade row extending radially inward in a flow path of the turbomachine, and two borescope accesses. The guide vanes form two segments each with a plurality of guide vanes circumferentially spaced apart, with the two segments having the same, constant cascade pitch and the two segments spaced such that the respective outermost guide vane adjacent to the respective other segment has an enlarged spacing in the circumferential direction from the adjacent guide vane of the other segment equal to 1.3 to 1.7 times the cascade pitch, the sum of the increased spacings being equal to 3 times the cascade pitch. The increased distance between the respective two adjacent outermost guide vanes of the two segments creates an enlarged vane passage between these guide vanes where the borescope accesses are formed.
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9.发明公开公开(公告)号：US20240174356A1
公开(公告)日：2024-05-30
申请号：US18522211
申请日：2023-11-28
CPC分类号： B64C29/0091 , B64C7/02 , B64C27/28
摘要： An air guidance device for a vertical take-off and landing aircraft is provided. A nacelle device with a drive device is connected via a pylon device to a wing of the vertical take-off and landing aircraft and is pivotable by a pivoting device, about an axis of rotation between a first position, such as a propulsion position, and a second position, such as a lift position, relative to the pylon device. A first inlet opening of the air guidance device is arranged on the pylon device in a region in which air conveyed by the drive device in the second position impinges on the pylon device and/or in a region of maximum propeller-generated pressure.
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公开(公告)号：US20240174355A1
公开(公告)日：2024-05-30
申请号：US18521655
申请日：2023-11-28
发明人： Andreas FRÖDE
CPC分类号： B64C29/0033 , B64C7/02
摘要： Vertical take-off and landing (VTOL) aircraft and nacelle devices for VTOL aircraft are disclosed. The nacelle device is connected via a pylon device to a wing of the vertical take-off and landing aircraft and is pivotable relative to the pylon device by a pivoting device about an axis of rotation between a first position, (e.g., a propulsion position), and a second position, (e.g., a lift position). The axis of rotation is arranged within the pylon device and/or the nacelle device, in particular on an axial center plane of the pylon device.
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