Through-flow gas turbine engine with electric motor and electric generator
A through-flow gas turbine engine includes a core comprising multiple spools rotatable about a center axis. An accessory gearbox (AGB) is drivingly engaged to the core and disposed aft of the outlet. A reduction gearbox (RGB) is drivingly engaged to the core and disposed forward of the inlet. The RGB has an RGB output to provide rotational output to a rotatable load. An electric motor is drivingly engaged to the rotatable load. An electric generator is configured to provide electrical power to the electric motor. the electric motor and the electric generator are disposed axially adjacent one another, and axially between the outlet and the AGB.
1. A through-flow gas turbine engine, comprising:
a core comprising multiple spools rotatable about a center axis of the gas turbine engine, each spool configured to extract energy from combustion gases, air and combustion gases configured to flow through the core in an aft direction from an air inlet at a forward end of the core to an outlet at an aft end of the core;
an accessory gearbox (AGB) drivingly engaged to the core and disposed aft of the outlet, the AGB coaxial to the center axis and driving one or more accessories;
a reduction gearbox (RGB) coaxial to the center axis and drivingly engaged to the core and disposed forward of the inlet, the RGB having an RGB output to provide rotational output to a rotatable load; and
an electric motor drivingly engaged to the rotatable load, and
an electric generator drivingly engaged to the core and configured to provide electrical power to the electric motor, the electric motor and the electric generator disposed axially adjacent one another, and disposed coaxially with the center axis between the outlet and the AGB.
2. The through-flow gas turbine engine according to claim 1 , wherein AGB has an AGB housing, and wherein the electric generator is at least partially housed within the AGB housing.
3. The through-flow gas turbine engine according to claim 1 , wherein the multiple spools of the core comprise a low pressure (LP) spool and a high pressure (HP) spool, and wherein the electric generator is driven by the LP spool via an LP shaft of the LP spool that is coaxial with the center axis.
4. The through-flow gas turbine engine according to claim 3 , further comprising an aft gear train drivingly engaged to the LP shaft and to an input shaft of the electric generator.
5. The through-flow gas turbine engine according to claim 4 , wherein the aft gear train is drivingly engaged to an input of the AGB.
6. The through-flow gas turbine engine according to claim 4 , wherein the aft gear train is disposed axially between the electric generator and the AGB.
7. The through-flow gas turbine engine according to claim 4 , wherein the aft gear train is disposed axially between the LP spool and the electric generator.
8. The through-flow gas turbine engine according to claim 7 , wherein the aft gear train is disposed axially between the outlet and the electric generator.
9. The through-flow gas turbine engine according to claim 4 , wherein the aft gear train is drivingly engaged to both the LP shaft and the electric motor to transmit a rotatable output of the electric motor to the LP shaft.
10. The through-flow gas turbine engine according to claim 3 , wherein the electric generator is housed in an annular electric generator housing extending around the LP shaft.