US 11,867,122 B2
Propulsion assembly for an aircraft
Jorge Alejandro Carretero Benignos, Taufkirchen (DE); and Lionel Czapla, Toulouse (FR)
Assigned to Airbus SAS, Blagnac (FR); and Airbus Operations SAS, Toulouse (FR)
Filed by Airbus SAS, Blagnac (FR); and Airbus Operations SAS, Toulouse (FR)
Filed on Oct. 11, 2022, as Appl. No. 17/963,237.
Claims priority of application No. 2110851 (FR), filed on Oct. 13, 2021.
Prior Publication US 2023/0167770 A1, Jun. 1, 2023
Int. Cl. F02C 7/16 (2006.01); B64D 27/12 (2006.01); B64D 29/06 (2006.01); B64D 33/08 (2006.01); B64D 37/32 (2006.01); F02C 7/22 (2006.01); F02C 9/46 (2006.01)
CPC F02C 7/16 (2013.01) [B64D 27/12 (2013.01); B64D 29/06 (2013.01); B64D 33/08 (2013.01); B64D 37/32 (2013.01); F02C 7/22 (2013.01); F02C 9/46 (2013.01); F05D 2220/323 (2013.01); F05D 2240/35 (2013.01); F05D 2260/213 (2013.01); F05D 2270/09 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A propulsion assembly for an aircraft, comprising:
a nacelle,
a propulsion system arranged inside the nacelle and comprising a fairing, a rotary assembly that has a combustion chamber and is housed in the fairing, an exhaust nozzle positioned downstream of the combustion chamber and delimited by a rear portion of the fairing, referred to as nozzle wall, and ensuring a discharge of combustion gases originating from combustion of fuel in the combustion chamber,
a fuel tank,
a supply pipe that connects the tank and the combustion chamber,
a cowling sealingly fastened to the nozzle wall and on the outside thereof, wherein the cowling and the nozzle wall define between them a chamber, and
a heat exchanger system ensuring, during operation of the propulsion system, an exchange of heat energy between the hot combustion gases circulating in the exhaust nozzle and the colder fuel circulating in the supply pipe at least in part by thermal radiation through the nozzle wall,
wherein the heat exchanger system has a pipe portion arranged in said chamber, and
wherein the exchange of heat energy takes place at this pipe portion,
wherein the nozzle wall has passing therethrough a plurality of orifices that open on one side into the exhaust nozzle and on the other side into the chamber,
wherein the heat exchanger system has a circulation pipe in which a heat transfer fluid circulates, a pump configured to move the heat transfer fluid in the circulation pipe, and a heat exchanger arranged between the supply pipe and the circulation pipe, and
wherein said pipe portion of the heat exchanger system is a portion of the circulation pipe.