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公开(公告)号：US11879357B2
公开(公告)日：2024-01-23
申请号：US18067961
申请日：2022-12-19
Applicant: ROLLS-ROYCE plc
Inventor： Peter T. Ireland , John Coull , João António Coelho Vieira
CPC classification number: F01D5/186 , F01D25/12 , F05D2220/32 , F05D2240/30 , F05D2240/304 , F05D2240/307 , F05D2260/202
Abstract: A turbine blade includes an aerofoil including a leading edge, a trailing edge, a first sidewall, a second sidewall, and an internal cooling circuit disposed within the aerofoil and configured to direct a cooling fluid within the aerofoil. The turbine blade includes at least one first recessed portion formed on the first sidewall proximal to a tip of the turbine blade. The first recessed portion is disposed proximal to and spaced apart from the trailing edge of the aerofoil. The first recessed portion includes a base surface, a first surface, and a second surface. The first recessed portion further includes at least one slot extending from the first surface to the internal cooling circuit. The slot is configured to allow a flow of the cooling fluid from the internal cooling circuit to the first recessed portion.
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公开(公告)号：US20250003826A1
公开(公告)日：2025-01-02
申请号：US18741216
申请日：2024-06-12
Applicant: ROLLS-ROYCE PLC
Inventor： Zahid M. HUSSAIN , Peter T. Ireland , David Bacci
Abstract: A pressurised fluid duct failure event location determination method including: monitoring acoustic signals; detecting a failure event occurrence based on an acoustic signal of those exceeding a first failure threshold, and identifying a failure marker; estimating, for each acoustic signal, a failure detection time; determining an acoustic weighted position for acoustic sensors based on the respective failure detection time for each acoustic signal and the position of each microphone; determining an estimate of a region containing the failure event as a first sub-volume of the duct based on the acoustic weighted position and a predetermined relationship between sound pressure level and regions of the duct; discretising the first sub-volume of the duct into a first three-dimensional grid having voxels according to a first grid mesh size; and determining a first estimate of the failure event location using a time-domain beamforming algorithm applied to the acoustic signals and the first sub-volume.
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公开(公告)号：US10196901B2
公开(公告)日：2019-02-05
申请号：US14944947
申请日：2015-11-18
Applicant: ROLLS-ROYCE PLC
Inventor： Tsun H. Wong , Peter T. Ireland , Kevin P. Self
Abstract: A component, e.g. an aerofoil component like a turbine-blade or guide-vane, for a gas turbine engine, including first and second walls defining at least one passage for supply of cooling fluid to a portion of the component to be cooled, the portion including a slot via which cooling fluid passes from the passage to exit of slot for effecting cooling of the portion, wherein the slot includes at least one side wall, pair of opposite side walls, each having surface profile defining array of channels for passage of cooling fluid, and surface profile defining each of arrays of channels is undulating with the respective arrays of channels in two side walls being angled with respect to one another. The resulting internal cross-corrugated cooling arrangement promotes enhanced cooling of the trailing edge or other portion of the component by controlling flow rate of cooling air through slot and exhausted therefrom.
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公开(公告)号：US20250003825A1
公开(公告)日：2025-01-02
申请号：US18741159
申请日：2024-06-12
Applicant: ROLLS-ROYCE PLC
Inventor： Zahid M. HUSSAIN , Peter T. Ireland , David Bacci
Abstract: A pressurised fluid duct failure event characterising method including: monitoring acoustic signals; detecting a failure event occurrence based on an acoustic signal exceeding a first failure threshold, and identifying a failure marker; estimating, for each acoustic signal, a failure detection time, based on the failure marker and a rate of change in sound pressure level for each acoustic signal; determining an acoustic weighted position for acoustic sensors; determining an estimate of a region containing the failure event as a first sub-volume of the duct based on the acoustic weighted position and a predetermined relationship between sound pressure level and regions of the duct; calculating, for each acoustic signal, one or more spectral characteristics; and determining at least one failure characteristic based on a comparison between the one or more spectral characteristics, the estimate of the region containing the failure event, and one or more predefined failure event parameters.
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