Hamilton Sundstrand Corporation

Goodrich Control Systems Limited

Andrew E Page

Tadashi Sawata

Savvas Georgiou

David Gerada

Dmitry Golovanov

Zeyuan Xu

Christopher Gerada

Chris H A Claycomb

Chris H Claycomb

An electric motor/generator includes a stator, a rotor with a plurality of magnets and a rotor frame arranged to support the plurality of magnets in an outer rotor configuration so that the plurality of magnets are arranged to form an annular ring surrounding the stator. The electric motor/generator also includes a banding sleeve disposed on a circumferential portion of the rotor frame radially outwardly of the plurality of magnets. The banding sleeve may comprise a composite material such as a carbon fibre composite.

Outer rotor machine with banding sleeve

A stator assembly for an electrical machine comprises a stator, a plurality of inserts and a heat sink. The stator comprises an annular core extending around an axis (X) and a plurality of axially extending slots. A plurality of sets of electrical windings is arranged within the slots. The windings have axial end portions arranged at axial ends of the core. The inserts comprise ceramic plates which are arranged in respective slots in the gaps (G) between adjacent respective electrical windings in the slots. The inserts extend axially from the respective slots for engagement with the heat sink.

Electrical machines

A stator assembly for an electrical machine comprises an annular core extending around an axis (X) and comprising a plurality of axially extending slots. A plurality of electrical windings are arranged in the slots and have end portions arranged at the axial ends of the core. A cooling jacket at least partially extends around a radially outer surface of the core. At least one annular cooling plate is mounted to an axial end of the cooling jacket and arranged in thermal contact with the end portions of the electrical windings.

An electric propulsion system, comprising a propeller and a motor arranged to rotate the propeller, the motor comprising an axial flux motor comprising a rotor disc and a stator disc mounted in face-to-face relationship with an air gap defined therebetween, the rotor disc driven to rotate relative to the stator disc to cause magnetic flux in the air gap to cause rotation of the propeller, characterised in that the propeller is directly attached to the rotor disc to rotate with the rotor disc.

Electric propulsion system

An electrical machine comprises a stator and a housing. The housing has an internal bore. The stator comprises an annular core mounted within the bore of the housing. The core comprises at least one key projecting radially outwardly from a radially outer surface thereof. The housing comprises at least one keyway in the bore. The at least one key of the core being received within the at least one keyway of the housing.

An electric motor includes one or more channels or grooves for directing fluid along the rotor as the rotor rotates.

Cooling of electric motors

A propeller system includes a rotatable housing having at least one propeller blade mounted thereon and an electric pitch control motor within the rotatable housing. A pitch control member is coupled to the propeller blade and extends through a wall of the rotatable housing. The pitch control motor is configured to move the pitch control member and to thereby vary the pitch of the propeller blade.

Propeller system

A motor for an electrohydraulic actuator (EHA). The motor comprises a rotary shaft for rotation about an axis (R), a rotor attached to the rotary shaft and rotatable therewith, a stator surrounding at least a portion of the rotor and a liner disposed between the rotor and the stator. The liner defines an axially extending chamber around the rotor for retaining a fluid between the rotor and the liner. The liner comprises a tubular body having an open end and a closed end. An EHA comprising the motor is also claimed.

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Tring, United Kingdom

Andrew E Page