Integrated boost cavity ring generator for turbofan and turboshaft engines

An electrical generator for extraction of electrical power from a gas turbine engine comprising:

• a rotor portion and a stator portion disposed within a booster cavity of the gas turbine engine, the gas turbine engine comprising a first shaft driving a low pressure turbine and a second shaft driving a high pressure turbine, the first and second shafts independently rotatable,
• the rotor portion rotatably positioned on an outer perimeter of the stator portion and supported about the stator portion, and the rotor portion and the stator portion arranged concentrically within the booster cavity;
• the rotor portion having a plurality of poles arranged circumferentially opposite the stator portion;
• the stator portion having a plurality of coil portions adjacent to the rotor portion;
• the rotor portion being integrated within the annular cavity and rotatable relative to the stator portion;
• and
• the stator portion being rigidly supported within the annular cavity;
• wherein the stator and rotor portions are configured to generate electrical power when one of the rotor portion and the stator portion is rotated relative to the other by the first shaft of the gas turbine engine to induce electrical currents in the coil portions.