| 摘要 |
A gas turbine engine comprising first and second rotor shafts and an intershaft rolling element bearing arranged between the shafts. The first rotor shaft has a stator stage and a rotor stage; the second rotor shaft has only a rotor stage and is arranged to contra-rotate relative to the first shaft. The intershaft bearing is arranged between the first and second shafts such that the relative speeds of the shafts minimise a cage speed of the intershaft bearing. |
