Search

EP-4741636-A1 - COOLING RESTORATION FOR INSTRUMENTED BLADE OUTER AIR SEAL

EP4741636A1EP 4741636 A1EP4741636 A1EP 4741636A1EP-4741636-A1

Abstract

An apparatus includes a blade outer air seal (BOAS) (100; 400), a measurement instrument adapter (200; 300), and a measurement instrument (130; 430). The BOAS (100; 400) includes at least one first channel (202, 204, 206; 302) configured to permit air to flow from an entry point (416A) of the at least one first channel (202, 204, 206; 302) to an exit point (416B) of the at least one first channel (202, 204, 206; 302). The measurement instrument adapter (200; 300) includes at least one second channel (110, 116; 404, 416) configured to permit air to flow from an entry point (110A) of the at least one second channel (110, 116; 404, 416) to an exit point (110B) of the at least one second channel (110, 116; 404, 416). The measurement instrument adapter (200; 300) is disposed within a first receptacle (114; 208; 414) of the measurement instrument adapter (200; 300) configured to receive the measurement instrument (130; 430). The measurement instrument adapter (200; 300) is disposed within a second receptacle (114; 414) of the BOAS (100; 400) configured to receive the measurement instrument adapter (200; 300). The apparatus is configured for installation in a gas-turbine engine.

Inventors

  • HACKETT, BRYAN JAMES
  • WARREN, Eli

Assignees

  • RTX Corporation

Dates

Publication Date
20260513
Application Date
20251107

Claims (14)

  1. A measurement instrument adapter (200; 300) comprising: a first receptacle (208) configured to receive a measurement instrument (130; 430); and at least one first channel (202, 204, 206; 302) configured to permit air to flow from an entry point (416A) of the at least one first channel (202, 204, 206; 302) to an exit point (416B) of the at least one first channel (202, 204, 206; 302), wherein the measurement instrument adapter (200; 300) is configured to interface with a second receptacle (114; 414) of a blade outer air seal (BOAS) (100; 400) configured for installation in a gas-turbine engine.
  2. The measurement instrument adapter (200; 300) of Claim 1, wherein the at least one first channel (202, 204, 206; 302) is configured to direct air flowing within the at least one first channel (202, 204, 206; 302) around the measurement instrument (130; 430) when the measurement instrument (130; 430) is disposed within the first receptacle (208).
  3. The measurement instrument adapter (200; 300) of Claim 1 or 2, wherein the at least one first channel (202, 204, 206; 302) is configured to permit air flowing within the at least one first channel (202, 204, 206; 302) to contact the measurement instrument (130; 430).
  4. The measurement instrument adapter (200; 300) of Claim 1, 2 or 3, wherein the measurement instrument (130; 430) is a blade tip clearance (BTC) probe.
  5. The measurement instrument adapter (200; 300) of any preceding claim, wherein the BOAS (100; 400) includes at least one second channel (110, 116; 404, 416) configured to permit air to flow from an entry point (110A) of the at least one second channel (110, 116; 404, 416) to an exit point (110B) of the at least one second channel (110, 116; 404, 416).
  6. The measurement instrument adapter (200; 300) of Claim 5, wherein: the second receptacle (114; 414) intersects the at least one second channel (110, 116; 404, 416); the at least one first channel (202, 204, 206; 302) is configured to permit flow of air through the at least one second channel (110, 116; 404, 416) via the at least one first channel (202, 204, 206; 302) when the measurement instrument adapter (200; 300) is disposed within the second receptacle (114; 414); and the at least one first channel (202, 204, 206; 302) is configured to permit air flowing through the at least one first channel (202, 204, 206; 302) to contact the BOAS (100; 400) when the measurement instrument adapter (200; 300) is disposed within the second receptacle (114; 414).
  7. The measurement instrument adapter (200; 300) of Claim 5 or 6, wherein an air flow restriction of the at least one first channel (202, 204, 206; 302) does not exceed an air flow restriction of the at least one second channel (110, 116; 404, 416) when the measurement instrument adapter (200; 300) is disposed within the second receptacle (114; 414).
  8. A blade outer air seal (BOAS) (100; 400) configured for installation in a gas-turbine engine, the BOAS (100; 400) comprising a second receptacle (114; 414) configured to receive the measurement instrument adapter (200; 300) of any of claims 1 to 4.
  9. The BOAS (100; 400) of Claim 8, further comprising at least one second channel (110, 116; 404, 416) configured to permit air to flow from an entry point (110A) of the at least one second channel (110, 116; 404, 416) to an exit point (110B) of the at least one second channel (110, 116; 404, 416).
  10. The BOAS (100; 400) of Claim 9, wherein: the second receptacle (114; 414) intersects the at least one second channel (110, 116; 404, 416); the at least one first channel (202, 204, 206; 302) is configured to permit flow of air through the at least one second channel (110, 116; 404, 416) via the at least one first channel (202, 204, 206; 302); and the at least one first channel (202, 204, 206; 302) is configured to permit air flowing through the at least one first channel (202, 204, 206) to contact the BOAS when the measurement instrument adapter (200; 300) is disposed within the second receptacle (114; 414).
  11. The BOAS (100; 400) of Claim 9 or 10, wherein an air flow restriction of the at least one first channel (202, 204, 206; 302) does not exceed an air flow restriction of the at least one second channel (110, 116; 404, 416) when the measurement instrument adapter (200; 300) is disposed within the second receptacle (114; 414).
  12. An apparatus comprising: the measurement instrument adapter (200; 300) of any of claims 1 to 4; a blade outer air seal (BOAS) (100; 400) that includes at least one second channel (110, 116; 404, 416) configured to permit air to flow from an entry point (110A) of the at least one second channel (110, 116; 404, 416) to an exit point (110B) of the at least one second channel (110, 116; 404, 416); and a measurement instrument (130; 430) disposed within the first receptacle (208) of the measurement instrument adapter (200; 300) configured to receive the measurement instrument (130; 430), wherein: the measurement instrument adapter (200; 300) is disposed within a second receptacle (114; 414) of the BOAS (100; 400) configured to receive the measurement instrument adapter (200; 300); and the apparatus is configured for installation in a gas-turbine engine.
  13. The apparatus of Claim 12, wherein: the second receptacle (114; 414) intersects the at least one second channel (110, 116; 404, 416); the at least one first channel (202, 204, 206; 302) is configured to permit flow of air through the at least one second channel (110, 116; 404, 416) via the at least one first channel (202, 204, 206; 302); and the at least one first channel (202, 204, 206; 302) is configured to permit air flowing through the at least one first channel (202, 204, 206; 302) to contact the BOAS (100; 400).
  14. The apparatus of Claim 12 or 13, wherein an air flow restriction of the at least one first channel (202, 204, 206; 302) does not exceed an air flow restriction of the at least one second channel (110, 116; 404, 416).

Description

TECHNICAL FIELD This disclosure generally relates to mechanical devices. More specifically, this disclosure relates to cooling restoration for an instrumented blade outer air seal (BOAS) for a gas turbine engine. BACKGROUND During gas turbine engine development, measurement instruments may be mounted at different locations within the gas turbine engine. For example, a probe may be placed within a post combustion turbine stage to measure blade tip clearance (BTC). To accommodate the measurement instrument, a component such as a BOAS may be modified to accept the measurement instrument, for example, by machining a receptacle for the measurement instrument in the component. However, such machining operations may negatively alter the performance of the component. For example, in the case of a BOAS, the receptacle for the measurement instrument may interfere with a BOAS cooling channel when the measurement instrument is placed in the receptacle. This may lead to overheating/uneven cooling and inaccurate measurement collection. SUMMARY The present invention relates to cooling restoration for an instrumented blade outer air seal (BOAS). In an aspect of the present invention, a measurement instrument adapter includes a first receptacle configured to receive a measurement instrument, and at least one first channel configured to permit air to flow from an entry point of the at least one first channel to an exit point of the at least one first channel. The measurement instrument adapter is configured to interface with a second receptacle of a BOAS configured for installation in a gas-turbine engine. Any single one or any combination of the following features may be used with the examples above. The at least one first channel may be configured to direct air flowing within the at least one first channel around the measurement instrument when the measurement instrument is disposed within the first receptacle. The at least one first channel may be configured to permit air flowing within the at least one first channel to contact the measurement instrument. The measurement instrument may be a blade tip clearance (BTC) probe. The BOAS may include at least one second channel configured to permit air to flow from an entry point of the at least one second channel to an exit point of the at least one second channel. The second receptacle may intersect the at least one second channel. The at least one first channel may be configured to permit flow of air through the at least one second channel via the at least one first channel when the measurement instrument adapter is disposed within the second receptacle. The at least one first channel may be configured to permit air flowing through the at least one first channel to contact the BOAS when the measurement instrument adapter is disposed within the second receptacle. The measurement instrument adapter may be configured such that an air flow restriction of the at least one first channel does not exceed an air flow restriction of the at least one second channel when the measurement instrument adapter is disposed within the second receptacle. In a further aspect of the present invention, a BOAS includes a first receptacle configured to receive a measurement instrument adapter. The measurement instrument adapter includes a second receptacle configured to receive a measurement instrument, and at least one first channel configured to permit air to flow from an entry point of the at least one first channel to an exit point of the at least one first channel. The BOAS is configured for installation in a gas-turbine engine. Any single one or any combination of the following features may be used with the examples above. The at least one first channel may be configured to direct air flowing within the at least one first channel around the measurement instrument when the measurement instrument is disposed within the second receptacle. The at least one first channel may be configured to permit air flowing within the at least one first channel to contact the measurement instrument. The measurement instrument may be a BTC probe. The BOAS may include at least one second channel configured to permit air to flow from an entry point of the at least one second channel to an exit point of the at least one second channel. The second receptacle may intersect the at least one second channel. The at least one first channel may be configured to permit flow of air through the at least one second channel via the at least one first channel when the measurement instrument adapter is disposed within the first receptacle. The at least one first channel may be configured to permit air flowing through the at least one first channel to contact the BOAS when the measurement instrument adapter is disposed within the first receptacle. The measurement instrument adapter may be configured such that an air flow restriction of the at least one first channel does not exceed an air flow restriction of the at least one second