# US 9,752,450 B2 · Turbine engine tip clearance control system with later translatable slide block > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,752,450 B2 - Document ID: US9752450B2 - Status: Granted - Kind: B2 - Application number: 14/731,155 - Filed: 2015-06-04 - Published: 2016-12-08 - Granted: 2017-09-05 - Earliest claimed: 2015-06-04 - Assignees: United Technologies Corporation - Applicants: United Technologies Corporation - Inventors: Brian Duguay; Timothy M. Davis - Web page: https://patentgrep.com/patent/US9752450B2 ## CPC - F01D 11/14: Adjusting or regulating tip-clearance, i.e. distance between rotor-blade tips and stator casing (rotors with blades adjustable in operation F01D7/00) - F01D 11/22: by mechanically actuating the stator or rotor components, e.g. moving shroud sections relative to the rotor - F01D 25/24: Casings (modified for heating or cooling F01D25/14); Casing parts, e.g. diaphragms, casing fastenings (casings for rotary machines or engines in general F16M {; special arrangements in stators dealing with breaking-off of part of rotor F01D21/045}) - F01D: NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES (machines or engines for liquids F03; non-positive displacement pumps F04D) ## Abstract An assembly is provided for a turbine engine with an axial centerline. This turbine engine assembly may include a blade outer air seal segment, a linkage and an actuation device. The linkage may include a shaft and a head, where the shaft is connected to the blade outer air seal segment and extends radially outward to the head. The actuation device may include a sloped slide block located radially within and engaged with the head. The actuation device may be configured to laterally translate the sloped slide block and thereby radially move the blade outer air seal segment. ## Claims ### Claim 1 An assembly for a turbine engine with an axial centerline, comprising: a blade outer air seal segment; a linkage including a shaft and a head, the shaft connected to the blade outer air seal segment and extending radially outward to the head; and an actuation device including a sloped slide block located radially within and engaged with the head, the actuation device configured to laterally translate the sloped slide block and thereby radially move the blade outer air seal segment; wherein the sloped slide block radially tapers as the sloped slide block extends laterally. ### Claim 2 (depends on 1) The assembly of claim 1, wherein the actuation device further includes a base with a groove, and the sloped slide block is arranged within the groove. ### Claim 3 (depends on 2) The assembly of claim 2, wherein the sloped slide block is radially engaged between the base and the head. ### Claim 4 (depends on 1) The assembly of claim 1, further comprising a turbine engine case, wherein the actuation device is mounted to an exterior of the turbine engine case, and the shaft extends radially out through an aperture in the turbine engine case to the head. ### Claim 5 (depends on 1) The assembly of claim 1, wherein the linkage is substantially constrained to radial translation. ### Claim 6 (depends on 1) The assembly of claim 1, further comprising a rotor with a plurality of rotor blades, wherein each of the rotor blades extends radially outward to a tip, and the actuation device is operable to radially move the blade outer air seal segment to reduce air leakage between the tip and the blade outer air seal segment. ### Claim 7 An assembly for a turbine engine with an axial centerline, comprising: a blade outer air seal segment; a linkage including a shaft and a head, the shaft connected to the blade outer air seal segment and extending radially outward to the head; and an actuation device including a sloped slide block located radially within and engaged with the head, the actuation device configured to laterally translate the sloped slide block and thereby radially move the blade outer air seal segment; wherein the sloped slide block is a first sloped slide block, and the head is configured with a second sloped slide block which engages the first sloped slide block. ### Claim 8 (depends on 7) The assembly of claim 7, wherein the first sloped slide block radially tapers as the first sloped slide block extends laterally in a first direction, and the second sloped slide block radially tapers as the second sloped slide block extends laterally in a second direction. ### Claim 9 An assembly for a turbine engine with an axial centerline, comprising: a blade outer air seal segment; a linkage including a shaft and a head, the shaft connected to the blade outer air seal segment and extending radially outward to the head; and an actuation device including a sloped slide block located radially within and engaged with the head, the actuation device configured to laterally translate the sloped slide block and thereby radially move the blade outer air seal segment; wherein the actuation device further includes a base with a groove, and the sloped slide block is arranged within the groove; and wherein the sloped slide block is a first sloped slide block, and the base includes a second sloped slide block which engages the first sloped slide block. ### Claim 10 (depends on 9) The assembly of claim 9, wherein the first sloped slide block radially tapers as the first sloped slide block extends laterally in a first direction, and the second sloped slide block radially tapers as the second sloped slide block extends laterally in a second direction. ### Claim 11 An assembly for a turbine engine with an axial centerline, comprising: a blade outer air seal segment; a linkage including a shaft and a head, the shaft connected to the blade outer air seal segment and extending radially outward to the head; and an actuation device including a sloped slide block located radially within and engaged with the head, the actuation device configured to laterally translate the sloped slide block and thereby radially move the blade outer air seal segment; wherein the actuation device further includes a base with a groove, and the sloped slide block is arranged within the groove; and wherein the actuation device further includes an actuation arm pivotally attached to the sloped slide block and pivotally attached to the base, and the actuation arm is configured to laterally translate the sloped slide block. ### Claim 12 An assembly for a turbine engine with an axial centerline, comprising: a blade outer air seal segment; a linkage including a shaft and a head, the shaft connected to the blade outer air seal segment and extending radially outward to the head; an actuation device including a sloped slide block located radially within and engaged with the head, the actuation device configured to laterally translate the sloped slide block and thereby radially move the blade outer air seal segment; a second blade outer air seal segment; a second linkage including a second shaft and a second head, the second shaft connected to the second blade outer air seal segment and extending radially outward to the second head; and a second actuation device including a second sloped slide block and an actuation arm, the second sloped slide block is located radially within and engaged with the second head, the second actuation device configured to laterally translate the second sloped slide block and thereby move the second blade outer air seal segment; wherein the actuation arm is pivotally attached to the sloped slide block and pivotally attached to the second sloped slide block, and the actuation arm is configured to laterally translate the sloped slide block and the second sloped slide block. ### Claim 13 An assembly for a turbine engine with an axial centerline, comprising: a blade outer air seal segment; a turbine engine case circumscribing the blade outer air seal segment; a linkage including a shaft and a head, the shaft connected to the blade outer air seal segment and extending radially outward through the turbine engine case to the head; and an actuation device including a base, a sloped slide block and an actuation aim; the base mounted to the turbine engine case; the sloped slide block mated with the base, and the sloped slide block slideably engaged with and radially between the base and the head; and the actuation arm pivotally attached to the sloped slide block and pivotally attached to the base, and the actuation arm is configured to laterally translate the sloped slide block and thereby move the blade outer air seal segment. ### Claim 14 (depends on 13) The assembly of claim 13, wherein the sloped slide block is a first sloped slide block, and the base is configured with a second sloped slide block which is engaged with the first sloped slide block. ### Claim 15 (depends on 13) The assembly of claim 13, wherein the sloped slide block is a first sloped slide block, and the head is configured with a second sloped slide block which is engaged with the first sloped slide block. ### Claim 16 (depends on 13) The assembly of claim 13, wherein the base includes a groove, and the sloped slide block is configured to laterally translate within the groove. ### Claim 17 (depends on 16) The assembly of claim 16, wherein the base further includes a second groove, and the head is configured to radially translate within the second groove. ### Claim 18 (depends on 17) The assembly of claim 17, wherein the first groove extends laterally through the base and the second groove extends axially through the base. ### Claim 19 (depends on 13) The assembly of claim 13, further comprising: a second linkage including a second shaft and a second head, the second shaft extending radially outward through the turbine engine case to the second head; and a second actuation device including a second base and a second sloped slide block; the second base mounted to the turbine engine case; the second sloped slide block mated with the second base, and the second sloped slide block slideably engaged with and radially between the second base and the second head; and the actuation arm pivotally attached to the second sloped slide block, and the actuation arm further configured to laterally translate the second sloped slide block.