Starter-generator modules for gas turbine engines
AssigneeHamilton Sundstrand Corporation
InventorsJacek F. Gieras, Lubomir A. Ribarov
Life of this patent
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Abstract
A starter-generator module for a gas turbine engine includes an inner stator portion with an armature defining a rotation axis and an outer rotor portion disposed about the rotation axis. The outer rotor portion includes a permanent magnet and a gear teeth member. The permanent magnet is disposed about the rotation axis and the gear teeth member is defined on the outer rotor portion such that the gear teeth member transmits rotational energy to an accessory gearbox in a start mode and receives rotational energy from the accessory gearbox in a generate mode.
Claims12
A starter-generator module for a gas turbine engine, comprising:
- an inner stator portion with an armature defining a rotation axis, where the armature includes a radially inner yoke portion connected to a plurality of radially outer teeth;
- an outer rotor portion with a permanent magnet disposed about the rotation axis;
- a gear teeth member defined on the outer rotor portion, wherein the gear teeth member is configured to transmit rotational energy to an accessory gearbox in a start mode and to receive rotational energy from the accessory gearbox in a generate mode;
- phase windings wrapped about at least two of the plurality of radially outer armature teeth;
- and
- a control coil disposed circumferentially between the phase windings;
- wherein the inner stator portion extends through the gear teeth member, wherein the outer rotor portion is rotationally supported from the inner stator portion with a set of axially spaced apart bearings, wherein the gear teeth member is axially between the axially spaced apart bearings.
Dependencies are inferred from the claim text.