Electric motor propulsion system for an aircraft
AssigneePratt & Whitney Canada Corp.
InventorsEric S. Durocher, Michel Labrecque
Life of this patent
Estimating the term…
Abstract
An assembly for a propulsion system of an aircraft includes a gearbox, at least one accessory load assembly, a propulsor, and an electric motor. The gearbox module includes a gear assembly and an output shaft. The gear assembly is connected to the output shaft. The at least one accessory load assembly includes at least one accessory load coupled to the output shaft. The propulsor is coupled to the output shaft. The electric motor includes a rotor. The rotor is coupled to the gear assembly to drive rotation of the output shaft about a rotational axis. The rotation of the output shaft drives rotation of the propulsor and the at least one accessory load for each accessory load assembly of the at least one accessory load assembly.
Claims17
An assembly for a propulsion system of an aircraft, the assembly comprising:
- a gearbox module including a gear assembly and an output shaft, the gear assembly is connected to the output shaft;
- at least one accessory load assembly, the at least one accessory load assembly includes at least one accessory load coupled to the output shaft;
- a propulsor coupled to the output shaft;
- and
- an electric motor including a rotor, the rotor is coupled to the gear assembly to drive rotation of the output shaft about a rotational axis, the rotation of the output shaft driving rotation of the propulsor and the at least one accessory load for each accessory load assembly of the at least one accessory load assembly,
- wherein the output shaft extends between and to a first axial end and a second axial end, the output shaft is connected to the propulsor at the first axial end, and the output shaft is connected to the gear assembly at the second axial end;
- and
- wherein the at least one accessory load assembly includes a plurality of accessory load assemblies circumferentially distributed about the gearbox module.
An assembly for a propulsion system of an aircraft, the assembly comprising:
- a gearbox module including a planetary gear assembly and an output shaft, the planetary gear assembly includes a sun gear, a plurality of planet gears, and a planet carrier, each planet gear of the plurality of planet gears is engaged with the sun gear and configured to revolve around the sun gear as the sun gear rotates, the planet carrier is rotatably connected to each planet gear of the plurality of planet gears, and the planet carrier is connected to the output shaft and configured to drive rotation of the output shaft as the plurality of planet gears revolve around the sun gear;
- at least one accessory load assembly, the at least one accessory load assembly includes at least one accessory load coupled to the output shaft;
- a propulsor coupled to the output shaft;
- an electric motor including a rotor including a first shaft coupled to the sun gear, and
- a mid-frame module, the mid-frame module including a mid-frame case.
An assembly for a propulsion system of an aircraft, the assembly comprising:
- a gearbox module including a gear assembly and an output shaft, the gear assembly is connected to the output shaft;
- at least one accessory load assembly, the at least one accessory load assembly includes at least one accessory load coupled to the output shaft;
- a propulsor coupled to the output shaft;
- an electric motor assembly including an electric motor, the electric motor includes a rotor;
- and
- a mid-frame module mounted to the gearbox module and the electric motor assembly, the mid-frame module includes a shaft and a bearing assembly, the shaft couples the rotor to the gear assembly, and the bearing assembly rotatably supports the shaft.
Dependencies are inferred from the claim text.