US 12,421,902 B2
Transfer of power between the high-pressure shaft and the low-pressure shaft of a turbomachine
Romain Jean Gilbert Thiriet, Moissy-Cramayel (FR); David Bernard Martin Lemay, Moissy-Cramayel (FR); and Fabien Mercier-Calvairac, Moissy-Cramayel (FR)
Assigned to SAFRAN HELICOPTER ENGINES, Bordes (FR)
Appl. No. 18/291,558
Filed by SAFRAN HELICOPTER ENGINES, Bordes (FR)
PCT Filed Jul. 22, 2022, PCT No. PCT/FR2022/051469
§ 371(c)(1), (2) Date Jan. 23, 2024,
PCT Pub. No. WO2023/007076, PCT Pub. Date Feb. 2, 2023.
Claims priority of application No. 2108280 (FR), filed on Jul. 29, 2021; and application No. 2108281 (FR), filed on Jul. 29, 2021.
Prior Publication US 2025/0092833 A1, Mar. 20, 2025
Int. Cl. F02C 7/36 (2006.01); F02C 9/28 (2006.01); F02C 9/56 (2006.01)
CPC F02C 7/36 (2013.01) [F02C 9/28 (2013.01); F02C 9/56 (2013.01); F05D 2220/323 (2013.01); F05D 2260/821 (2013.01); F05D 2260/941 (2013.01); F05D 2270/112 (2013.01); F05D 2270/114 (2013.01); F05D 2270/303 (2013.01); F05D 2270/304 (2013.01); F05D 2270/332 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A control device for controlling a power transfer system for the transfer of power between a high-pressure shaft and a low-pressure shaft of a turbomachine of an aircraft, wherein the control device comprises:
a fatigue analysis module for analysing the fatigue of the turbomachine designed to determine from between two indicators (D1, D2) respectively measuring two fatigues of the turbomachine, which is the one that is the most in advance, i.e., is likely to reach a respective upper limit (D1max, D2max) first; and
a control module for controlling the power transfer system designed to slow down the fatigue measured by the most advanced indicator (D1, D2).