US 12,012,231 B2
Method for monitoring at least one aircraft engine
Guillaume Rémi Bonnet, Moissy-Cramayel (FR); and Josselin Xavier Coupard, Moissy-Cramayel (FR)
Assigned to SAFRAN AIRCRAFT ENGINES, Paris (FR)
Appl. No. 17/593,785
Filed by SAFRAN AIRCRAFT ENGINES, Paris (FR)
PCT Filed Mar. 16, 2020, PCT No. PCT/FR2020/050550
§ 371(c)(1), (2) Date Sep. 24, 2021,
PCT Pub. No. WO2020/201652, PCT Pub. Date Oct. 8, 2020.
Claims priority of application No. 1903464 (FR), filed on Apr. 1, 2019.
Prior Publication US 2022/0185502 A1, Jun. 16, 2022
Int. Cl. B64F 5/60 (2017.01); B64D 45/00 (2006.01); F02C 6/20 (2006.01)
CPC B64F 5/60 (2017.01) [B64D 45/00 (2013.01); F02C 6/20 (2013.01); B64D 2045/0085 (2013.01); F05D 2270/11 (2013.01); F05D 2270/44 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method for monitoring at least one aircraft engine, said method including, during at least one flight mission of the aircraft, a step of acquiring measurements according to two sets, a first set of measurements of endogenous variables representative of the behavior of the engine, and a second set of measurements of exogenous variables representative of the acquisition context, said method being characterized in that it further includes, during the flight mission, the following steps:
a step of normalizing the measurements of the first set relative to the measurements of the second set,
a step of generating a current model representative of the time evolution of the behavior of the engine based on the normalized measurements,
a step of detecting at least one potential abnormality in the behavior of the engine based on a comparison of the current model with a predefined reference model representative of the behavior of the engine free of abnormality, and
if an abnormality is detected, a step of generating a maintenance message including an alert based on the detected abnormality as well as maintenance recommendations or maintenance operations associated with said alert,
a step of transmitting the maintenance message to at least one receiving device on the ground,
the steps of acquiring, normalizing, generating a current model, of detecting and generating a maintenance message being carried out on board the aircraft.