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公开(公告)号：US20240352869A1
公开(公告)日：2024-10-24
申请号：US18137756
申请日：2023-04-21
发明人： Scott Goyette , Janet Shaw , Gregory S. Hagen , David L. Lincoln , Zaffir A. Chaudhry , Danbing Seto
CPC分类号： F01D21/003 , B64D27/10 , H04N23/90 , F05D2260/83
摘要： An assembly for an aircraft propulsion system includes a propulsor section for the aircraft propulsion system, a plurality of imaging devices, and a controller. The propulsor section includes a propulsor. The propulsor includes a plurality of propulsor blades. The plurality of imaging devices are mounted in the propulsor section. Each imaging device includes a camera. The controller includes a processor in communication with a non-transitory memory storing instructions, which instructions when executed by the processor, cause the processor to: control the camera of each imaging device of the plurality of imaging devices to capture image data of each propulsor blade of the plurality of propulsor blades and identify a presence or an absence of damage for each propulsor blade of the plurality of propulsor blades using the image data from the camera of two or more imaging devices of the plurality of imaging devices.
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公开(公告)号：US20240352868A1
公开(公告)日：2024-10-24
申请号：US18137748
申请日：2023-04-21
发明人： Scott Goyette , Janet Shaw , Gregory S. Hagen , David L. Lincoln , Zaffir A. Chaudhry , Jeremiah C. Lee , Danbing Seto
CPC分类号： F01D21/003 , H04N7/188 , H04N23/56 , F05D2260/83
摘要： An assembly for an aircraft propulsion system includes a propulsor section, an imaging device, a plurality of light sources, and a controller. The propulsor section includes a propulsor. The propulsor includes a plurality of propulsor blades. The imaging device is disposed in the propulsor section. The imaging device includes a camera. The plurality of light sources are disposed in the propulsor section. The controller includes a processor in communication with a non-transitory memory storing instructions, which instructions when executed by the processor, cause the processor to: control the plurality of light sources to direct light to the plurality of propulsor blades, control the camera to capture image data of each propulsor blade of the plurality of propulsor blades, and identify a presence or an absence of damage for each propulsor blade of the plurality of propulsor blades using the image data.
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公开(公告)号：US11726035B2
公开(公告)日：2023-08-15
申请号：US17119192
申请日：2020-12-11
IPC分类号： G01N21/94 , G01N21/3586 , G01N21/3577
CPC分类号： G01N21/3586 , G01N21/3577 , G01N21/94
摘要： A method of foreign object debris discrimination incudes illuminating particulates located within a sensing volume with a first electromagnetic radiation pulse emitted from a first source, and illuminating the particulates within the sensing volume with a second electromagnetic radiation pulse emitted from a second source, wherein the second electromagnetic radiation pulse has a second wavelength range within the terahertz (THz) regime. The first electromagnetic radiation returns and the second electromagnetic radiation returns are compared to determine a scattering ratio from the comparing step. The scattering ratio is then utilized to determine a resultant foreign object debris type of the solid objects.
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公开(公告)号：US20230160834A1
公开(公告)日：2023-05-25
申请号：US17456238
申请日：2021-11-23
发明人： David L. Lincoln , Paul Attridge
CPC分类号： G01N21/8914 , G01N21/4738 , F01D21/003 , G01N2021/4709 , G01N2021/4707 , F05D2270/804
摘要： A damage detection system includes one or more emitters, one or more receivers, and a controller. Emitters are arranged to transmit continuous beam or intermittent light pulses toward rotor blades during operation of a turbomachine. Light returns collected at the receivers define a light return amplitude profile. The controller analyzes the light return amplitude profile to identify light amplitude changes indicative of one or more damaged blades. When the light return profile satisfies one or more damage criteria, the controller outputs an indication of blade damage to another turbomachine controller, system, or display.
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公开(公告)号：US20230027449A1
公开(公告)日：2023-01-26
申请号：US17383781
申请日：2021-07-23
摘要： A method of foreign object debris discrimination includes illuminating a particle located within a sensing volume with a modulated electromagnetic radiation pulse emitted from a source; receiving one or more electromagnetic radiation return signals that have been scattered by the particle illuminated by the modulated electromagnetic radiation pulse at a detector; mixing, using a controller, the electromagnetic radiation return signal of amplitude IRS and frequency fRS with a reference signal of amplitude ILS and frequency fRS; analyzing, using the controller, an amplitude of the mixed signal √{square root over (ILSIRS)}, and frequency of the mixed signal, fRS−fLS; and classifying, using the controller, a particle position, a velocity, and electromagnetic characteristic of the particle based on the amplitude, √{square root over (ILSIRS)}, and frequency, fRS−fLS of the mixed signal.
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公开(公告)号：US20240271784A1
公开(公告)日：2024-08-15
申请号：US18110186
申请日：2023-02-15
发明人： Orin G. Avidane , Andre M. Ajami , Coy Bruce Wood , Joseph V. Mantese , David L. Lincoln , Stephen K. Kramer , Ramesh Rajagopalan
CPC分类号： F23N5/082 , F23N1/005 , F23R3/28 , F23N2229/04 , F23N2229/16 , F23N2229/18
摘要： A combustion assembly for a gas turbine engine includes a combustor, a monochromator, and a photodetector assembly. The combustor forms a combustion chamber. The monochromator is disposed outside the combustion chamber. The monochromator is configured to receive an optical input from the combustion chamber and direct an optical output. The optical input has a range of light wavelengths. The optical output has a subset of the range of light wavelengths. The photodetector assembly is disposed outside the combustion chamber. The photodetector assembly is configured to receive the optical output from the monochromator and generate an output signal representative of one or more optical characteristics of the optical output.
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7.发明公开公开(公告)号：US20240264092A1
公开(公告)日：2024-08-08
申请号：US18105299
申请日：2023-02-03
发明人： Jeremiah C. Lee , Paul Attridge , Zaffir A. Chaudhry , Scott Goyette , Gregory S. Hagen , David L. Lincoln , Kin Gwn Lore
IPC分类号： G01N21/95 , G01N21/88 , G06F18/2135 , G06T7/00
CPC分类号： G01N21/9515 , G01N21/8851 , G06F18/2135 , G06T7/0004 , G01N2021/1765 , G01N2021/8861 , G01N2021/8887 , G06T2207/20081 , G06T2207/20084
摘要： Methods of inspecting fan blades of a gas turbine engine for abnormalities are disclosed. One method utilizes a neural network to determine whether a photographic image of at least one fan blade depicts an abnormality of the at least one fan blade. Another method uses a dimensional reduction technique on one or more first photographic images that depict at least one first fan blade to obtain basis vectors, utilizes the basis vectors to obtain a reconstructed version of a second photographic image that depicts at least one second fan blade, and determines whether the at least one second fan blade includes an abnormality based on a difference between the second photographic image and the reconstructed version of the second photographic image. Another method determines whether a fan blade includes an abnormality based on contrast differences between adjacent areas of an image.
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公开(公告)号：US12055055B1
公开(公告)日：2024-08-06
申请号：US18136127
申请日：2023-04-18
发明人： Scott Goyette , Janet Shaw , Gregory S. Hagen , David L. Lincoln , Zaffir A. Chaudhry , Jeffrey P. King
CPC分类号： F01D25/002 , B08B5/02 , F01D21/003 , F05D2220/36 , F05D2260/80 , F05D2270/8041
摘要： An inspection system for rotating fan rotor blades in a gas turbine engine is provided. The system includes a plurality of cameras and lids, and a cleaning system. The cameras are each controllable to capture an image of a leading edge of a fan rotor blade and produce signals representative thereof. Each camera is mounted to a static structure disposed forward of the fan rotor blade stage. The lids are attached to the static structure and is selectively movable between closed and open positions. In the closed position at least one camera is enclosed. In the open position the camera is at least partially exposed and has a field of view of the rotating fan rotor blades. The cleaning system is controllable to selectively produce a body of fluid relative to the at least one camera when the respective lid is in the open position.
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公开(公告)号：US12019028B2
公开(公告)日：2024-06-25
申请号：US17383781
申请日：2021-07-23
CPC分类号： G01N21/8806 , G01N15/10 , G02B6/3885 , G01N2015/1027 , G01N2201/06113
摘要： A method of foreign object debris discrimination includes illuminating a particle located within a sensing volume with a modulated electromagnetic radiation pulse emitted from a source; receiving one or more electromagnetic radiation return signals that have been scattered by the particle illuminated by the modulated electromagnetic radiation pulse at a detector; mixing, using a controller, the electromagnetic radiation return signal of amplitude IRS and frequency fRS with a reference signal of amplitude ILS and frequency fRS; analyzing, using the controller, an amplitude of the mixed signal √{square root over (ILSIRS)}, and frequency of the mixed signal, fRS−fLS; and classifying, using the controller, a particle position, a velocity, and electromagnetic characteristic of the particle based on the amplitude, √{square root over (ILSIRS)}, and frequency, fRS−fLS of the mixed signal.
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公开(公告)号：US20240352867A1
公开(公告)日：2024-10-24
申请号：US18136115
申请日：2023-04-18
发明人： Scott Goyette , Gregory S. Hagen , Zaffir A. Chaudhry , Paul Attridge , Janet Shaw , David L. Lincoln , Jeffrey P. King
CPC分类号： F01D21/003 , H04N7/188 , H04N23/90 , F05D2260/83
摘要： An assembly for an aircraft propulsion system includes a propulsor and an imaging assembly. The propulsor includes a propulsor disk, a plurality of propulsor blades, and a nose cone. The plurality of propulsor blades are circumferentially distributed about the propulsor disk. Each propulsor blade of the plurality of propulsor blades extends radially between and to a root end and a tip end. The root end is disposed at the propulsor disk. The propulsor disk and the plurality of propulsor blades are configured to rotate about the rotational axis. The nose cone is disposed axially adjacent the propulsor disk. The imaging assembly includes an imaging device disposed on the nose cone. The imaging device includes a camera. The camera is configured to capture image data of each propulsor blade of the plurality of propulsor blades as the plurality of propulsor blades rotate about the rotational axis.
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