US 12,264,990 B2
Method and a system for monitoring the state of an exchanger in an air circuit of an aircraft
José Ribeiro, Toulouse (FR); Didier Dubaele, Toulouse (FR); Alexis Castelein, Toulouse (FR); Nicolas Canouet, Toulouse (FR); and Fanny Morel, Toulouse (FR)
Assigned to LIEBHERR-AEROSPACE TOULOUSE SAS, Toulouse (FR)
Appl. No. 17/597,096
Filed by LIEBHERR-AEROSPACE TOULOUSE SAS, Toulouse (FR)
PCT Filed Jun. 26, 2020, PCT No. PCT/FR2020/051117
§ 371(c)(1), (2) Date Dec. 27, 2021,
PCT Pub. No. WO2020/260838, PCT Pub. Date Dec. 30, 2020.
Claims priority of application No. 1907020 (FR), filed on Jun. 27, 2019.
Prior Publication US 2022/0268657 A1, Aug. 25, 2022
Int. Cl. G01M 3/00 (2006.01); B64D 13/06 (2006.01); B64D 13/08 (2006.01); B64F 5/60 (2017.01)
CPC G01M 3/002 (2013.01) [B64D 13/08 (2013.01); B64F 5/60 (2017.01); B64D 2013/0611 (2013.01); B64D 2013/0618 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A method of monitoring the state of a heat exchanger (17) in an air circuit (5) of an aircraft (7), said heat exchanger being configured to cool the air extracted from a main hot air source of the aircraft, said method comprising:
acquisition of temperature measurements taken by a probe (31) disposed at an outlet of said heat exchanger (17), said acquisition being carried out when the air circuit is supplied by a secondary hot air source (35) downstream of said heat exchanger (17) and the main hot air source being turned off,
selection of a relevant temperature measurement from said temperature measurements,
comparing said relevant temperature measurement to an alert threshold, and
evaluating a leak level in the heat exchanger depending on said comparison.