Patent ID: 11878812
Assignee: ROLLS-ROYCE CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC B  H  F | IPC B  F  H

Claim 0:
1. An aircraft comprising
a propulsion system configured to produce thrust for driving the aircraft during operation,
an optional accessory system mechanically and electrically de-coupled from the propulsion system so as not to directly draw power from the propulsion system, and
a ram air turbine power system electrically coupled to the accessory system to provide energy for use by the accessory system, the ram air turbine power system including
a turbine case that extends around a central axis,
a turbine rotor mounted for rotation about the central axis with an outer diameter adjacent the turbine case, an inner diameter spaced radially inward of the outer diameter, and airfoils arranged between the outer diameter and the inner diameter,
an accessory generator including a series of magnets coupled to the inner diameter of the turbine rotor at a location axially aligned along the central axis with the airfoils and a series of stator windings mounted radially inward of the series of magnets at a location axially aligned along the central axis with the series of magnets so that, upon rotation of the series of magnets with the turbine rotor, electrical power is generated for use by the accessory system, and
wherein the series of magnets includes a plurality of magnets arranged circumferentially adjacent to one another around the central axis and each of the plurality of magnets is oriented so that magnetic directionality is selected and the series of magnets forms a Halbach array configured to provide managed power density.