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

Claim 8:
9. An independently-powered unit configured to be coupled to an aircraft, the unit comprising
a pod with attachment points for coupling the unit to the aircraft and defining an interior space, an accessory system mounted in the interior space of the pod, and a ram air turbine power system mounted in the interior space of the pod and electrically coupled to the accessory system to provide energy for use by the accessory system,
wherein the ram air turbine power system includes
(i) a turbine rotor mounted for rotation about a central axis and having airfoils outward from an inner diameter of the turbine rotor and
(ii) 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.