# US 2025/0092829 A1 · Powerplant for an aircraft > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2025/0092829 A1 - Document ID: US20250092829A1 - Status: Published application - Kind: A1 - Application number: 18/883,246 - Filed: 2024-09-12 - Published: 2025-03-20 - Earliest claimed: 2023-09-18 - Assignees: Airbus SAS; Airbus Operations GmbH - Applicants: Airbus SAS; Airbus Operations SAS - Inventors: Lionel CZAPLA; Alexis PISSAVIN - Web page: https://patentgrep.com/patent/US20250092829A1 ## CPC - F02C 3/20: using a special fuel, oxidant, or dilution fluid to generate the combustion products - F02C 7/22: Fuel supply systems - F02C 3/22: the fuel or oxidant being gaseous at standard temperature and pressure (F02C3/28 takes precedence) - F02C 7/224: Heating fuel before feeding to the burner - F02K 3/04: the plant including ducted fans, i.e. fans with high volume, low pressure outputs, for augmenting the jet thrust, e.g. of double-flow type - F05D 2220/323: for aircraft propulsion, e.g. jet engines - 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) - F05D: INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS ## Abstract A powerplant for an aircraft, comprising a propulsion system with a core enclosed in a casing and having a combustion chamber, a supply pipe conveying dihydrogen to the combustion chamber by passing through the casing in an injection zone, and a closed enclosure, delimited by first and second walls and containing a downstream pipe, a treatment system for treating the dihydrogen, and the injection zone, wherein the first wall is formed by part of the casing. ## Claims ### Claim 1 A powerplant for an aircraft comprising: a nacelle, a propulsion system housed in the nacelle and comprising a core enclosed in a casing and having a combustion chamber, a supply pipe configured to convey dihydrogen to the combustion chamber by passing through the casing in an injection zone, at least one treatment system arranged on the supply pipe and configured for treating said dihydrogen conveyed in the supply pipe, and a closed enclosure, delimited by a first wall and a second wall, and containing a downstream pipe of the supply pipe, at least one treatment system, and the injection zone, wherein the first wall is formed by part of the casing, wherein said closed enclosure is formed by a first sub-enclosure containing the injection zone, and a second sub-enclosure separated from the first sub-enclosure by a separating wall, wherein the downstream pipe passes through the second sub-enclosure and then the first sub-enclosure to reach the injection zone by passing through the separating wall, wherein each sub-enclosure is closed and delimited by a first wall, a second wall, and the separating wall, and wherein the first wall defining each sub-enclosure is formed by part of the casing. ### Claim 2 (depends on 1) The powerplant as claimed in claim 1, wherein said closed enclosure comprises at least one ventilation system configured for discharging gases present in the closed enclosure to the outside of the aircraft. ### Claim 3 (depends on 2) The powerplant as claimed in claim 2, wherein the at least one ventilation system comprises an air inlet passing through the second wall and through which air from outside the aircraft enters the closed enclosure, and an air outlet passing through the second wall and through which the gases present in the closed enclosure are exhausted to the outside of the aircraft. ### Claim 4 (depends on 2) The powerplant as claimed in claim 2, wherein the at least one ventilation system comprises a pressure limiter mounted on the second wall and through which the gases present in the closed enclosure are exhausted to the outside of the aircraft. ### Claim 5 (depends on 1) The powerplant as claimed in claim 1, further comprising: a ventilation system including an air inlet passing through the second wall of the first sub-enclosure and through which air from outside the aircraft enters the first sub-enclosure, an air outlet passing through the second wall of the second sub-enclosure and through which gases present in the second sub-enclosure are exhausted to the outside of the aircraft, and an air passage passing through the separating wall and emerging on one side in the first sub-enclosure and on another side in the second sub-enclosure. ### Claim 6 (depends on 1) The powerplant as claimed in claim 1, further comprising: a ventilation system including an air inlet passing through the second wall of the first sub-enclosure and through which air from outside the aircraft enters the first sub-enclosure, and an air outlet passing through the second wall of the first sub-enclosure and through which gases present in the first sub-enclosure are exhausted to the outside of the aircraft. ### Claim 7 (depends on 6) The powerplant as claimed in claim 6, wherein the downstream pipe passes sealably through the separating wall. ### Claim 8 (depends on 1) The powerplant as claimed in claim 1, wherein at least one sub-enclosure has a ventilation system comprising a pressure limiter mounted on the second wall of said sub-enclosure and through which gases present in said sub-enclosure are exhausted to the outside of the aircraft. ### Claim 9 (depends on 1) The powerplant as claimed in claim 1, wherein at least one treatment system comprises a treatment part in which the dihydrogen is treated, and a non-treatment part in which there is no dihydrogen, wherein the treatment part and the non-treatment part are sealed from each other, wherein the at least one treatment system is arranged through an opening in the second wall and sealably fastened to said second wall, and wherein the treatment part is positioned in the closed enclosure or the corresponding sub-enclosure, and the non-treatment part is positioned outside the closed enclosure or the corresponding sub-enclosure. ### Claim 10 (depends on 1) An aircraft comprising: a dihydrogen tank and at least one powerplant as claimed in claim 1, wherein the supply pipe is fluidly connected to the dihydrogen tank.