Rolls-royce Corporation

Geraint Wyn Jewell

Stephen Mark Husband

Arwyn S Thomas

Alexis Lambourne

David James Powell

Zi-Qiang Zhu

Ellis Fui Hen Chong

Peter Malkin

Leon Kevin Rodrigues

This invention relates to a laminated core for an electrical machine, including: a plurality of laminations configured to define a channel in a surface of the laminated core for the flow of a cooling fluid, wherein the channel has a base and at least one side wall, the at least one side wall having a stepped profile.

Cooling arrangement for an electrical machine

Apparatus indicated generally atis incorporated within an aircraft. The apparatusincludes an electric motor, a first drive trainand a second drive train. The first drive trainprovides drive from the electric motorfor one or more of the wheels, allowing the electric motorto propel the aircraft when taxiing. The second drive trainprovides drive from the electric motorfor an aircraft system which is operational at least when the aircraft is in flight. In this example, the electric motoris illustrated using the second drive trainfor driving a compressorof the ECS, the compressorbeing responsible for cabin pressurization during flight. A clutchallows the drive trainto be connected or disconnected from the electric motor, thereby connecting or disconnecting the drive from the electric motorto the wheels. The clutchis controlled to disconnect the first drive trainwhen the aircraft is in flight. Thus, when the aircraft is in flight, the full output of the motoris available for driving the compressor; when the aircraft is on the ground, the compressoris not required or is less demanding, and surplus output of the motorcan be used for driving the wheels

Apparatus for taxiing an aircraft

A flux-switching machine stator comprising two or more C-cores, each C-core having two legs and a back portion joining the legs, and a permanent magnet arranged between legs of adjacent C-cores. Each leg has a main portion and a tip portion further from the back portion characterized in that the tip portion of each leg is angled relative to the main portion of the respective leg.

Flux-switching machine

Growing community of inventors

Owlthorpe, United Kingdom

Geraint Wyn Jewell