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公开(公告)号：US20140112765A1
公开(公告)日：2014-04-24
申请号：US14031644
申请日：2013-09-19
申请人： ROLLS-ROYCE PLC
发明人： Marko BACIC , Ronald William DANIEL
IPC分类号： F04D29/16
CPC分类号： F04D29/16 , F01D11/06 , F01D11/10 , F01D11/20 , F05D2270/62
摘要： A fluidic actuator comprising: a fluid nozzle for delivering fluid and a tube having an open end and a closed end, the open end spaced from the fluid nozzle. Also a pair of electrodes mounted in the tube and spaced apart to create a spark gap therebetween. A voltage source is arranged to supply a voltage across the pair of electrodes wherein the voltage causes plasma formation in the spark gap thereby shortening the effective length of the tube.
摘要翻译： 流体致动器包括：用于输送流体的流体喷嘴和具有开口端和封闭端的管，该开口端与流体喷嘴间隔开。 还有一对电极安装在管中并间隔开以在它们之间产生火花隙。 电压源被布置成在一对电极之间提供电压，其中电压引起火花间隙中的等离子体形成，从而缩短管的有效长度。
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公开(公告)号：US20130191004A1
公开(公告)日：2013-07-25
申请号：US13735508
申请日：2013-01-07
申请人： ROLLS-ROYCE PLC
发明人： Peter BEECROFT , Leo Vivian LEWIS , Marko BACIC
IPC分类号： F02C9/00
CPC分类号： F02C9/00 , F01D11/08 , F01D11/20 , F02C9/28 , F05D2260/80 , F05D2260/82
摘要： A gas turbine engine control apparatus comprises a controller 34, a memory 36 associated with the controller 34 and inputs 38 for measurement data from an engine. The controller 34 determines the start of a monitoring cycle at 73, receives measurement data at the inputs 38 during the monitoring cycle, manipulates the measurement data to provide an incremental deterioration value representing deterioration occurring within the engine and during the monitoring cycle, and uses the incremental deterioration value at 72 to update a deterioration value 74 stored in the memory 36, and determines the start of a further monitoring cycle.
摘要翻译： 燃气涡轮发动机控制装置包括控制器34，与控制器34相关联的存储器36和用于来自发动机的测量数据的输入38。 控制器34在73处确定监视周期的开始，在监视循环期间接收输入端38的测量数据，操作测量数据以提供表示发动机内部和监视循环期间的劣化的增量劣化值，并使用 72处的增量劣化值，以更新存储在存储器36中的劣化值74，并确定进一步监视循环的开始。
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公开(公告)号：US20230407798A1
公开(公告)日：2023-12-21
申请号：US18174806
申请日：2023-02-27
申请人： ROLLS-ROYCE plc
发明人： Marko BACIC , Jonathan E. HOLT
摘要： A gas turbine engine system includes a hydrogen-burning gas turbine engine and a fuel system including a fuel line arranged to receive gaseous hydrogen at an input thereof and provide the gaseous hydrogen to combustion apparatus of the hydrogen-burning gas turbine engine and a vent line including a vent valve and having a first end coupled to the fuel line and a second end disposed remotely from the hydrogen-burning gas turbine engine. A controller is arranged to switch the vent valve from a closed state to an open state upon detection of an engine shaft-break or similar condition, thus providing rapid evacuation of gaseous hydrogen from the fuel line and hence rapid shut-down of the engine. The engine may be shut down more rapidly than is possible by means of a shut-off valve within the fuel line.
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公开(公告)号：US20200149480A1
公开(公告)日：2020-05-14
申请号：US16598342
申请日：2019-10-10
申请人： ROLLS-ROYCE plc
发明人： Marko BACIC
摘要： A method of actively controlling torsional resonance of a rotating shaft of an engine is provided. The shaft has a rotational velocity characterised by a low frequency, rotational velocity term and a high frequency, oscillatory term superimposed on the low frequency term, the oscillatory term being caused by torsional resonance. The method including:measuring the rotational velocity of the shaft; extracting the oscillatory term from the measured rotational velocity; and on the basis of the extracted oscillatory term, applying a torque component to the shaft, the torque component being modulated at the same frequency as the torsional resonance to counteract the torsional resonance.
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公开(公告)号：US20160116329A1
公开(公告)日：2016-04-28
申请号：US14871013
申请日：2015-09-30
申请人： ROLLS-ROYCE PLC
发明人： Marko BACIC
CPC分类号： G01H1/006 , F01D5/027 , F02C9/28 , F02C9/56 , F05D2260/80 , F05D2270/334 , F05D2270/335 , G01H13/00 , G01L3/04 , G01M5/0025
摘要： A method to determine inertia of components of a rotating shaft system. The shaft system includes a shaft coupling a turbine to drive the rotation and a load to be driven by the rotation. The method includes steps to: apply a feedback to a forcing input to the shaft system; measure resonant frequency of the shaft; iterate steps 1.a) and 1.b) for different feedbacks; plot resonant frequency squared against gain; and determine inverse of gradient from the plot to give inertia of the turbine. Also a method to determine shaft stiffness using the inertia of the turbine.
摘要翻译： 确定旋转轴系的部件惯性的方法。 轴系包括联接涡轮以驱动旋转的轴和由旋转驱动的负载。 该方法包括以下步骤：将反馈应用于对轴系统的强制输入; 测量轴的谐振频率; 迭代步骤1.a）和1.b）以获得不同的反馈; 绘制谐振频率对抗增益平方; 并从曲线确定梯度的倒数，给出涡轮机的惯量。 也是使用涡轮机的惯性来确定轴刚度的方法。
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公开(公告)号：US20150159499A1
公开(公告)日：2015-06-11
申请号：US14537382
申请日：2014-11-10
申请人： ROLLS-ROYCE PLC
CPC分类号： F01D11/14 , F01D11/20 , F02C9/00 , F02C9/28 , F05D2270/02 , F05D2270/04 , F05D2270/051 , F05D2270/20 , F05D2270/309 , F05D2270/44
摘要： A thrust demand signal is provided to a processor of a gas turbine engine and is modified, according to growth time constants of a rotor and/or a casing of the engine, in order to control the rotational speed or the rate of change of rotational speed of the engine so as to prevent contact between the rotor and the casing.
摘要翻译： 推力需求信号被提供给燃气涡轮发动机的处理器，并且根据发动机的转子和/或壳体的生长时间常数被修改，以便控制转速或转速变化率 以防止转子和壳体之间的接触。
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公开(公告)号：US20140112757A1
公开(公告)日：2014-04-24
申请号：US14031695
申请日：2013-09-19
申请人： ROLLS-ROYCE PLC
IPC分类号： F01D11/10
CPC分类号： F01D11/10 , F01D11/06 , F01D11/20 , F01D11/24 , F05D2260/16 , F05D2270/172 , F05D2270/62
摘要： A clearance control device including a segment having a passage to deliver fluid towards a component rotating past the segment. Also a fluid flow device having a first fluid path coupled to the passage and a second fluid path that is decoupled from the passage. A first plasma generator is located in the fluid flow device that directs fluid towards the first fluid path; a second plasma generator is located in the fluid flow device that directs fluid towards the second fluid path; and a control arrangement is configured to alternately energise the first and second plasma generators at an energising frequency to deliver fluid to the passage at a frequency coincident with the passing frequency of the component.
摘要翻译： 一种间隙控制装置，其包括具有将流体输送到经过所述段旋转的部件的通道的段。 还有一种流体流动装置，其具有联接到通道的第一流体路径和与通道分离的第二流体路径。 第一等离子体发生器位于流体流动装置中，其将流体引向第一流体路径; 第二等离子体发生器位于流体流动装置中，其将流体引向第二流体路径; 并且控制装置被配置为以激励频率交替地激励第一和第二等离子体发生器，以以与部件的通过频率一致的频率将流体输送到通道。
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公开(公告)号：US20130152602A1
公开(公告)日：2013-06-20
申请号：US13682280
申请日：2012-11-20
申请人： Rolls-Royce PLC
发明人： Marko BACIC
IPC分类号： F02C7/18
CPC分类号： F02C7/185 , F01D5/08 , F01D5/081 , F01D5/082 , F01D5/085 , F01D5/087 , F01D5/088 , F01D11/24 , F01D17/02 , F01D17/085 , F02C3/13 , F02C6/08 , F02C7/12 , F02C7/125 , F02C9/18 , F05D2260/213 , F05D2260/81 , F05D2270/112 , F05D2270/114 , F05D2270/303 , F05D2270/3032 , F05D2270/44 , Y02T50/675 , Y02T50/676
摘要： A gas turbine engine has, in flow series, a compressor section, a combustor, and a turbine section. The engine further has a cooling system which diverts a cooling air flow received from the compressor section to a heat exchanger and then to the turbine section to cool a component thereof. The cooling air flow by-passes the combustor and is cooled in the heat exchanger. The cooling system has a valve arrangement which regulates the cooling air flow. The engine further has a closed-loop controller which estimates and/or measures one or more temperatures of the cooled component, compares values derived from the estimated and/or measured temperatures with one or more corresponding targets, and issues a demand signal to the valve arrangement based on the comparison and a value of the demand signal at a previous time step.
摘要翻译： 燃气涡轮发动机以流动方式具有压缩机部分，燃烧器和涡轮部分。 发动机还具有冷却系统，其将从压缩机部分接收的冷却空气流转移到热交换器，然后转移到涡轮部分以冷却其部件。 冷却空气流绕过燃烧器并在热交换器中被冷却。 冷却系统具有调节冷却空气流量的阀门装置。 发动机还具有闭环控制器，其估计和/或测量冷却部件的一个或多个温度，将来自估计和/或测量温度的值与一个或多个相应目标进行比较，并向阀门发出需求信号 基于该比较的布置以及在前一时间步长的需求信号的值。
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