US 11,807,388 B2
Apparatus, method and computer program for monitoring an aircraft engine
Lennart Gulikers, Moissy-Cramayel (FR); and Sébastien Philippe Razakarivony, Moissy-Cramayel (FR)
Assigned to SAFRAN, Paris (FR)
Appl. No. 17/765,309
Filed by SAFRAN, Paris (FR)
PCT Filed Oct. 5, 2020, PCT No. PCT/FR2020/051741
§ 371(c)(1), (2) Date Mar. 30, 2022,
PCT Pub. No. WO2021/069824, PCT Pub. Date Apr. 15, 2021.
Claims priority of application No. 1911082 (FR), filed on Oct. 7, 2019.
Prior Publication US 2022/0371745 A1, Nov. 24, 2022
Int. Cl. B64D 45/00 (2006.01); G05B 23/02 (2006.01); F02C 9/00 (2006.01)
CPC B64D 45/00 (2013.01) [F02C 9/00 (2013.01); G05B 23/0254 (2013.01); B64D 2045/0085 (2013.01); F05D 2270/44 (2013.01); F05D 2270/71 (2013.01); G05B 2219/45071 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A device for monitoring over time a state of at least one propulsion engine of at least one aircraft, wherein the device comprises a memory storing a computer program and one or more computers configured to access the memory and execute the computer program to implement at least:
an acquisition module for acquiring data of flights of the at least one propulsion engine of the at least one aircraft, comprising, in association for each flight, values of input variables of the at least one propulsion engine during the flight, values of environment variables of the at least one propulsion engine during the flight and values of output variables of the at least one propulsion engine during the flight,
a learning module configured to compute by learning from the data of each flight an individual flight model for the flight, linking the input variables of the at least one propulsion engine, the environment variables of the at least one propulsion engine and the output variables of the at least one propulsion engine,
a using module for using individual flight models, configured to compute, for each flight:
estimates of the values of the output variables of the at least one propulsion engine, which are obtained by applying the individual flight model to reference values of the input variables of the at least one propulsion engine and to reference values of the environment variables of the at least one propulsion engine, and
an error associated with the estimates of the values of the output variables of the at least one propulsion engine, which have been generated by the individual flight model and which have been obtained by applying the individual flight model to the reference values of the input variables of the at least one propulsion engine and to the reference values of the environment variables of the at least one propulsion engine,
wherein the reference values belong to a prescribed set of reference data, which are identical for the plurality of individual flight models.