US 11,988,097 B2
Aircraft power architecture
Olivier Lafargue, Moissy-Cramayel (FR); and Thomas Klonowski, Moissy-Cramayel (FR)
Assigned to SAFRAN HELICOPTER ENGINES, Bordes (FR)
Appl. No. 17/056,292
Filed by SAFRAN HELICOPTER ENGINES, Bordes (FR)
PCT Filed May 9, 2019, PCT No. PCT/FR2019/051051
§ 371(c)(1), (2) Date Nov. 17, 2020,
PCT Pub. No. WO2019/220038, PCT Pub. Date Nov. 21, 2019.
Claims priority of application No. 1854151 (FR), filed on May 18, 2018.
Prior Publication US 2021/0362869 A1, Nov. 25, 2021
Int. Cl. F01D 15/10 (2006.01); B64C 27/12 (2006.01); F02C 7/32 (2006.01); F02C 7/36 (2006.01)
CPC F01D 15/10 (2013.01) [B64C 27/12 (2013.01); F02C 7/32 (2013.01); F02C 7/36 (2013.01); F05D 2220/323 (2013.01); F05D 2220/329 (2013.01); F05D 2220/50 (2013.01); F05D 2220/76 (2013.01)] 11 Claims
OG exemplary drawing
 
1. An aircraft power architecture, comprising:
a power transmission gearbox, located in a first compartment, and configured to transmit mechanical energy to a rotor,
a gas turbine located in a second compartment separated from the first compartment by a partition, comprising a gas generator and a free turbine connected to the power transmission gearbox by a power shaft of the gas turbin,
an accessory gearbox, configured to supply at least mechanical energy to accessory equipment by taking part of the energy produced by the gas generator, the gas turbine being attached in the aircraft via the power shaft being set in the power transmission gearbox and via a holding system connecting the gas turbine to the power transmission gearbox,
wherein:
the gas turbine comprises a first electrical machine configured to take the part of the energy produced by the gas generator and convert it into electrical energy when the gas turbine is running,
the accessory gearbox is located in the first compartment and comprises a second electrical machine configured to supply power to the accessory equipment and to receive the electrical energy transmitted by the first electrical machine when the gas turbine is running
wherein the second electric machine receives the electrical energy from the first electric machine via an electric connection and converts the electrical energy to mechanical energy to power the accessory equipment and wherein the accessory gearbox is mechanically decoupled from the gas turbine such that the part of the energy taken from the gas generator by the accessory gear box is transmitted electrically via the first electric machine to the second electrical machine.