公开(公告)号：US20180131250A1

公开(公告)日：2018-05-10

申请号：US15795492

申请日：2017-10-27

Applicant: ROLLS-ROYCE plc

Inventor： Geraint W. JEWELL ,  Adam J. MCLOUGHLIN ,  Ellis F H CHONG

IPC: H02K7/108 ,  H02K1/27 ,  F16D27/01 ,  F16D27/108 ,  F16D27/118 ,  F16D11/14

CPC classification number: H02K7/1085 ,  F02C7/36 ,  F05D2260/403 ,  F16D11/14 ,  F16D27/01 ,  F16D27/108 ,  F16D27/118 ,  H02K1/272 ,  H02K7/125 ,  H02K7/1823 ,  Y02E10/725

Abstract: An electrical machine comprising a two-part rotor formed of a first rotor part and a second rotor part. The first rotor part includes a conical section and is mounted to a shaft of the machine. The second rotor part has a bore including a complementary conical section. The second rotor part is configured to displace axially between a first state, in which it is engaged with the first rotor part to form the rotor of the electrical machine, and a second state, in which it is axially disengaged from the first rotor part. Also a clutch having an engaged state and a disengaged state. When the clutch is in one of its states the second rotor part is in its first state and switching the clutch to the other of its states axially displaces the second rotor part to its second state.