Patent ID: 11909293
Assignee: ROLLS-ROYCE ELECTRICAL NORWAY AS
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 8:
9. A method of manufacturing a sleeved rotor of an electric machine, the method comprising:
providing a first layer of carbon fibre filaments aligned substantially 90° relative to a rotational axis;
providing a second layer of fibre filaments comprising one or more of glass fibre, aramid, ultra-high molecular weight polyethylene, nylon or poly(p-phenylene-2,6-benzobisoxaole) (PBO) within a matrix material, the fibers having a lower modulus of elasticity than the carbon fibre filaments wound around the first layer of carbon fibre filaments; and
providing a third layer of carbon fibre filaments around the second layer of fibre filaments aligned substantially 90° to the rotational axis; wherein
the fibres of the first layer and the third layer have a higher modulus of elasticity than the fibres of the second layer, and
the fibres of the second layer are oriented between 50° and 75° relative to the rotational axis.