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公开(公告)号：US09597732B2
公开(公告)日：2017-03-21
申请号：US14604888
申请日：2015-01-26
IPC分类号： F16L55/027 , B22F5/10 , B22F3/105 , B33Y10/00 , B33Y80/00
CPC分类号： B22F5/10 , B22F3/1055 , B22F2998/10 , B33Y10/00 , B33Y80/00 , F16L55/02736 , F16L55/02781 , Y02P10/295 , B22F2003/247
摘要： Flow restrictor assemblies including a monolithic flow restrictor and methods for manufacturing the same are provided. The monolithic flow restrictor is configured for disposing in a fluid passage of a housing body. The monolithic flow restrictor comprises a first end and a second end, a first screen at the first end and a second screen at the second end, and a series of cross-sectional portions between the first screen and the second screen. Each cross-sectional portion has a plurality of slots formed in a radially outer surface thereof for connecting a series of restricting orifices formed in the monolithic flow restrictor for tortuously conducting a fluid through the series of cross-sectional portions.
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公开(公告)号：US11066150B2
公开(公告)日：2021-07-20
申请号：US16227175
申请日：2018-12-20
发明人： Paul W. Futa, Jr. , Sammuel Tillich , Steven Alan Lewis , Christopher Douglas Eick , Donald Striker , Michael Albert McPherson
摘要： A propeller oil control system for a turboprop engine of an aircraft includes an engine control unit and a propeller oil controller. The engine control unit is operable to determine a flight phase of the aircraft and is configured to supply control commands. The propeller oil controller is coupled to receive a supply of oil and to discharge the oil at a discharge oil pressure. The propeller oil controller includes an electrohydraulic servo valve that receives the control commands moves to a plurality of positions between a first position and a mid-position, and a plurality of positions between the mid-position and a second position. The engine control unit only commands the electrohydraulic servo valve to move out of the first position when the engine control unit determines the aircraft is conducting a take-off roll or the aircraft is in flight.
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公开(公告)号：US10850831B2
公开(公告)日：2020-12-01
申请号：US16230201
申请日：2018-12-21
发明人： Paul W. Futa, Jr. , Sammuel Tillich , Steven Alan Lewis , Christopher Douglas Eick , Donald Striker , Michael Albert McPherson
摘要： A propeller pitch control system for a turboprop engine of an aircraft includes an engine control unit and a pitch control unit. The engine control unit is operable to determine a phase of flight of the aircraft and is configured to supply control commands. The pitch control unit is coupled to receive the control commands from the engine control unit and includes a housing, a beta piston, a position sensor, a beta tube, and an electrohydraulic valve. The engine control unit only commands the electrohydraulic valve to move the beta piston from the fully retracted position when the engine control unit determines the aircraft is conducting pre-takeoff roll taxiing operations or is conducting post landing touchdown operations.
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公开(公告)号：US10758981B2
公开(公告)日：2020-09-01
申请号：US16037382
申请日：2018-07-17
发明人： Steven Alan Lewis , Gary A. Valencourt , Yathiraj Kasal , Sammuel Tillich , Elliot Conrad , Michael J. Spier
IPC分类号： F16L55/027 , B22F3/105 , B22F5/10 , B33Y80/00
摘要： Additively-manufactured flow restrictors are provided, as are methods for producing additively-manufactured flow restrictors. In various embodiments, the additively-manufactured flow restrictor includes a flowbody through which a flow path extends, a restricted orifice located in the flowbody and providing a predetermined resistance to fluid flowing along the flow path in a first flow direction, and a first internal perforated screen positioned in the flow path upstream of the restricted orifice taken in the first flow direction. The flowbody and the first internal perforated screen integrally formed as a single additively-manufactured piece utilizing, for example, Direct Metal Laser Sintering (DMLS) or another additive manufacturing process. In certain embodiments, the first internal perforated screen may include an endwall and a peripheral sidewall, which is integrally formed with the endwall and spaced from an inner circumferential surface of the flowbody by an annular clearance.
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公开(公告)号：US20200023433A1
公开(公告)日：2020-01-23
申请号：US16037382
申请日：2018-07-17
发明人： Steven Alan Lewis , Gary A. Valencourt , Yathiraj Kasal , Sammuel Tillich , Elliot Conrad , Michael J. Spier
IPC分类号： B22F3/105 , B22F5/10 , F16L55/027
摘要： Additively-manufactured flow restrictors are provided, as are methods for producing additively-manufactured flow restrictors. In various embodiments, the additively-manufactured flow restrictor includes a flowbody through which a flow path extends, a restricted orifice located in the flowbody and providing a predetermined resistance to fluid flowing along the flow path in a first flow direction, and a first internal perforated screen positioned in the flow path upstream of the restricted orifice taken in the first flow direction. The flowbody and the first internal perforated screen integrally formed as a single additively-manufactured piece utilizing, for example, Direct Metal Laser Sintering (DMLS) or another additive manufacturing process. In certain embodiments, the first internal perforated screen may include an endwall and a peripheral sidewall, which is integrally formed with the endwall and spaced from an inner circumferential surface of the flowbody by an annular clearance.
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6.发明申请FLOW RESTRICTOR ASSEMBLIES INCLUDING A MONOLITHIC FLOW RESTRICTOR AND METHODS FOR MANUFACTURING THE SAME 有权流量限制器组件，包括一个单片流量限制器及其制造方法公开(公告)号：US20160215914A1
公开(公告)日：2016-07-28
申请号：US14604888
申请日：2015-01-26
CPC分类号： B22F5/10 , B22F3/1055 , B22F2998/10 , B33Y10/00 , B33Y80/00 , F16L55/02736 , F16L55/02781 , Y02P10/295 , B22F2003/247
摘要： Flow restrictor assemblies including a monolithic flow restrictor and methods for manufacturing the same are provided. The monolithic flow restrictor is configured for disposing in a fluid passage of a housing body. The monolithic flow restrictor comprises a first end and a second end, a first screen at the first end and a second screen at the second end, and a series of cross-sectional portions between the first screen and the second screen. Each cross-sectional portion has a plurality of slots formed in a radially outer surface thereof for connecting a series of restricting orifices formed in the monolithic flow restrictor for tortuously conducting a fluid through the series of cross-sectional portions.
摘要翻译： 提供了包括单片流量限制器的流量限制器组件及其制造方法。 整体式限流器构造成用于设置在壳体的流体通道中。 单片限流器包括第一端和第二端，在第一端处的第一屏幕和在第二端处的第二屏幕，以及在第一屏幕和第二屏幕之间的一系列横截面部分。 每个横截面部分具有形成在其径向外表面中的多个槽，用于连接形成在整体式限流器中的一系列限制孔，用于通过一系列横截面部分弯曲地传导流体。
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