# US 2017/0254274 A1 · High pressure compressor augmented bleed with autonomously actuated valve > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2017/0254274 A1 - Document ID: US20170254274A1 - Status: Published application - Kind: A1 - Application number: 15/059,716 - Filed: 2016-03-03 - Published: 2017-09-07 - Earliest claimed: 2016-03-03 - Assignees: General Electric Company - Applicants: General Electric Company - Inventors: Michael Anthony Thomas, JR.; Curtis William Moeckel; David William Fasig; Carlos Ivan Flores - Web page: https://patentgrep.com/patent/US20170254274A1 ## 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)} - F04D 29/522: {especially adapted for elastic fluid pumps} - F01D 17/145: {by means of valves, e.g. for steam turbines (valves in general F16K)} - F02C 6/08: the gas being bled from the gas-turbine compressor - F04D 27/0215: {Arrangements therefor, e.g. bleed or by-pass valves} - F04D 27/023: {Details or means for fluid extraction} - F04D 29/584: {cooling or heating the machine (F04D29/5846, F04D29/5853 take precedence)} - F05D 2220/32: in gas turbines - F05D 2240/40: Use of a multiplicity of similar components - F05D 2260/20: Heat transfer, e.g. cooling - F05D 2260/38: by a spring, i.e. spring loaded or biased towards a certain position - F05D 2270/112: by limiting temperatures - F05D 2270/331: Mechanical loads - Y02T 50/60: Efficient propulsion technologies, e.g. for aircraft - 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) - F04D: NON-POSITIVE-DISPLACEMENT PUMPS (engine fuel-injection pumps F02M; ion pumps H01J41/12; electrodynamic pumps H02K44/02) - F01D: NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES (machines or engines for liquids F03; non-positive displacement pumps F04D) - F05D: INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract Gas turbine engine compressor bleed assembly includes annular bleed plenum between annular outer and inner casings circumscribing compressor flowpath of compressor, upstream and downstream bleed ports disposed through inner casing and between compressor flowpath and plenum at upstream and downstream stages. Bleed path extends from downstream bleed port through bleed plenum and out bleed outlet disposed through outer casing. Autonomously actuated valve such as poppet valve disposed in bleed path or downstream bleed port. Autonomously actuated or poppet valve may be set to open at take-off and/or climb. Bleed outlet may be customer and domestic or engine bleed outlet disposed through outer casing and in fluid bleed air communication with bleed plenum. Another assembly may include annular forward and aft bleed outlets connected to plenums. Bleed path extends from downstream bleed port through plenums and out forward bleed outlet. ## Claims ### Claim 1 A gas turbine engine compressor bleed assembly comprising: an annular bleed plenum radially disposed between radially spaced apart annular outer and inner casings circumscribing a compressor flowpath of a compressor, upstream and downstream bleed ports disposed through the inner casing and radially between the compressor flowpath and the bleed plenum at upstream and downstream stages respectively of the compressor, a bleed path extending from the downstream bleed port through the bleed plenum and out a bleed outlet radially disposed through the outer casing, and an autonomously actuated valve disposed in the bleed path. ### Claim 2 (depends on 1) An assembly as claimed in claim 1 further comprising the autonomously actuated valve disposed in the downstream bleed port. ### Claim 3 (depends on 2) An assembly as claimed in claim 2 further comprising the autonomously actuated valve being a poppet valve. ### Claim 4 (depends on 3) An assembly as claimed in claim 3 further comprising the autonomously actuated valve or the poppet valve set to open at take-off and/or climb. ### Claim 5 (depends on 1) An assembly as claimed in claim 1 further comprising the upstream and downstream stages being adjacent stages in the compressor. ### Claim 6 (depends on 1) An assembly as claimed in claim 1 further comprising the upstream and downstream stages being non-adjacent stages spaced two or more stages apart in the compressor. ### Claim 7 (depends on 1) An assembly as claimed in claim 1 further comprising the bleed outlet being a customer and domestic or engine bleed outlet radially disposed through the outer casing and in fluid bleed air communication with the annular bleed plenum. ### Claim 8 (depends on 7) An assembly as claimed in claim 7 further comprising the autonomously actuated valve disposed in the downstream bleed port. ### Claim 9 (depends on 8) An assembly as claimed in claim 8 further comprising the autonomously actuated valve being a poppet valve. ### Claim 10 (depends on 9) An assembly as claimed in claim 9 further comprising the autonomously actuated valve or the poppet valve set to open at take-off and/or climb. ### Claim 11 (depends on 10) An assembly as claimed in claim 10 further comprising the upstream and downstream stages being adjacent stages in the compressor or non-adjacent stages spaced two or more stages apart in the compressor. ### Claim 12 (depends on 1) An assembly as claimed in claim 1 further comprising the bleed outlet being one of customer and domestic or engine bleed outlets radially disposed through the outer casing and in fluid bleed air communication with the annular bleed plenum. ### Claim 13 (depends on 12) An assembly as claimed in claim 12 further comprising the autonomously actuated valve disposed in the downstream bleed port. ### Claim 14 (depends on 13) An assembly as claimed in claim 13 further comprising the autonomously actuated valve being a poppet valve. ### Claim 15 (depends on 14) An assembly as claimed in claim 14 further comprising the autonomously actuated valve or the poppet valve set to open at take-off and/or climb. ### Claim 16 (depends on 15) An assembly as claimed in claim 15 further comprising the upstream and downstream stages being adjacent stages in the compressor or non-adjacent stages spaced two or more stages apart in the compressor. ### Claim 17 (depends on 1) An assembly as claimed in claim 1 further comprising: the annular bleed plenum being one of annular forward and aft bleed plenums radially disposed between radially spaced apart annular outer and inner casings and circumscribing the compressor flowpath, the bleed outlet being one of forward and aft bleed outlets in fluid bleed air communication with the forward and aft bleed plenums respectively and radially disposed through the outer casing, upstream and downstream bleed ports disposed through the inner casing and radially between the compressor flowpath and the forward and aft bleed plenums at upstream and downstream stages respectively of the compressor, a bleed path extending from the downstream bleed port through the forward and aft bleed plenums and out the forward bleed outlet, and an autonomously actuated valve disposed in the bleed path. ### Claim 18 (depends on 17) An assembly as claimed in claim 17 further comprising the autonomously actuated valve disposed in a bulkhead or a radially inwardly depending annular flange of the outer casing axially separating the forward and aft bleed plenums. ### Claim 19 (depends on 18) An assembly as claimed in claim 18 further comprising the autonomously actuated valve being a poppet valve. ### Claim 20 (depends on 19) An assembly as claimed in claim 19 further comprising the autonomously actuated valve or the poppet valve set to open at take-off and/or climb.