# US 10,309,318 B2 · Turbomachine flow diverting device and method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,309,318 B2 - Document ID: US10309318B2 - Status: Granted - Kind: B2 - Application number: 14/953,476 - Filed: 2015-11-30 - Published: 2016-07-21 - Granted: 2019-06-04 - Earliest claimed: 2014-12-02 - Assignees: United Technologies Corporation - Applicants: United Technologies Corporation - Inventors: Jose E. Ruberte Sanchez - Web page: https://patentgrep.com/patent/US10309318B2 ## CPC - F02C 9/18: by bleeding, bypassing or acting on variable working fluid interconnections between turbines or compressors or their stages {(F02C3/113 takes precedence)} - F02K 1/386: {mixing devices in the jet pipe, e.g. for mixing primary and secondary flow} - F02C: GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS (construction of turbines F01D; jet-propulsion plants F02K; construction of compressors or fans F04; generating combustion products of high pressure or high velocity F23R; using gas turbines in compression refrigeration plants F25B11/00) - F02K: JET-PROPULSION PLANTS (features of jet-propulsion plants common to gas-turbine plants, air intakes or fuel supply control of air-breathing jet-propulsion plants F02C7/00, F02C9/00) ## Abstract An example turbomachine exhaust flow diverting assembly includes an upstream flow diverter disposed about a rotational axis of a turbomachine, and a downstream flow diverter disposed about the rotational axis and axially misaligned with the upstream flow diverter, the upstream flow diverter and the downstream flow diverter both independently moveable between a first position and a second position, the first position permitting more bypass flow from a bypass flow passage to a core flow passage than the second position. ## Claims ### Claim 1 A turbomachine exhaust flow diverting assembly, comprising: an upstream flow diverter disposed about a rotational axis of a turbomachine, radially outward of a turbine exhaust case, and between a core flow passage and a main bypass passage; and a downstream flow diverter disposed downstream of the upstream flow diverter about the rotational axis and axially misaligned with the upstream flow diverter, radially outward of the turbine exhaust case, and between the core flow passage and the main bypass passage, the upstream flow diverter being moveable between a first upstream flow diverter position and a second upstream flow diverter position, the downstream flow diverter being moveable between a first downstream flow diverter position and a second downstream flow diverter position, the upstream flow diverter and the downstream flow diverter being independently moveable, and each of the first upstream flow diverter position and the first downstream flow diverter position permitting more bypass flow from a main bypass flow passage to the core flow passage than the corresponding one of the second upstream flow diverter position and the second downstream flow diverter position. ### Claim 2 (depends on 1) The assembly of claim 1, wherein the upstream flow diverter and the downstream flow diverter move axially between the corresponding one of the first upstream flow diverter position and the first downstream flow diverter position and the corresponding one of the second upstream flow diverter position and the second downstream flow diverter position. ### Claim 3 (depends on 1) The assembly of claim 1, wherein the upstream flow diverter is upstream from the downstream flow diverter relative to a direction of flow through the turbomachine. ### Claim 4 (depends on 1) The assembly of claim 1, wherein the upstream flow diverter and the downstream flow diverter are disposed along a radially outer boundary of the core flow passage. ### Claim 5 (depends on 1) The assembly of claim 1, further comprising a radially outer bypass flow passage that is radially outside the core flow passage and the main bypass flow passage. ### Claim 6 (depends on 5) The assembly of claim 5, wherein each of the first upstream flow diverter position and the first downstream flow diverter position permits more flow from the radially outer bypass flow passage to the core flow passage than the corresponding one of the second upstream flow diverter position and the second downstream flow diverter position. ### Claim 7 (depends on 1) The assembly of claim 1, wherein the upstream flow diverter is axially aligned with at least a portion of a turbine engine case of the turbomachine. ### Claim 8 (depends on 7) The assembly of claim 7, wherein the downstream flow diverter is downstream from the turbine engine case. ### Claim 9 (depends on 1) The assembly of claim 1, wherein the downstream flow diverter in the first downstream flow diverter position permits more flow to a variable area mixing plane of the turbomachine than the downstream flow diverter in the second downstream flow diverter position. ### Claim 10 (depends on 9) The assembly of claim 9, wherein the downstream flow diverter in the second downstream flow diverter position permits more flow to a nozzle of the turbomachine than the downstream flow diverter in the first downstream flow diverter position. ### Claim 11 (depends on 1) The assembly of claim 1, wherein the upstream flow diverter comprises a plurality of individual doors distributed annularly about the rotational axis. ### Claim 12 A turbomachine assembly, comprising: a core flow passage extending axially from a fan section to an exhaust; a radially inner bypass flow passage that is radially outside the core flow passage; a radially outer bypass flow passage that is radially outside the radially inner bypass flow passage; an upstream flow diverter disposed about a rotational axis of a turbomachine and radially outward of an exhaust case; and a downstream flow diverter disposed downstream of the upstream flow diverter about the rotational axis and axially misaligned with the upstream flow diverter, radially outward of the turbine exhaust case, and between the core flow passage and the radially inner bypass flow passage, the upstream flow diverter being moveable between a first upstream flow diverter position and a second upstream flow diverter position, the upstream flow diverter and the downstream flow diverter being independently moveable, and each of the first upstream flow diverter position and the first downstream flow diverter position permitting more bypass flow from the radially inner bypass flow passage to the core flow passage than the corresponding one of the second upstream flow diverter position and the second downstream flow diverter position. ### Claim 13 (depends on 12) The assembly of claim 12, wherein the upstream flow diverter and the downstream flow diverter move axially between the corresponding one of the first upstream flow diverter position and the first downstream flow diverter position and the corresponding one of the second upstream flow diverter position and the second downstream flow diverter position. ### Claim 14 (depends on 12) The assembly of claim 12, wherein the upstream flow diverter and the downstream flow diverter are annular. ### Claim 15 (depends on 12) The assembly of claim 12, wherein at least a portion of the upstream flow diverter is axially aligned with a turbine exhaust case, and the downstream flow diverter is downstream from the turbine exhaust case relative to a general direction of flow through the turbomachine. ### Claim 16 (depends on 12) The assembly of claim 12, wherein the first position permits more flow from the radially outer bypass flow passage to a core flow passage than the second position.