Turbomachine with concentric shafts which in case of a shaft rupture have a braking action on each other

摘要

A coating (22) with an elevated coefficient of friction and a low thermal conductivity covers a low pressure shaft (12) of a turbomachine with a zone (17) close to a concentric high pressure shaft (11), where a contact of the two shafts and some friction may bring about the rupture of a bearing (13) of the low pressure shaft (12) after damage leading to the appearance of an unbalance.