Prediction Approach to Life on Wing for Civil Aeroengine

To reduce engine maintenance cost and support safe operation, a prediction method of engine life on wing was proposed. This method is a kind of regression model which is a function of the condition monitoring and failure data. Key causes of engine removals were analyzed, and the life limit due to performance deterioration was predicted by proportional hazards model. Then the scheduled removal causes were considered as constraints of engine life to predicte the finai life on wing. Application of the proposed prediction method to the case of CF6-80C2A5 engine fleet in an airline proved its effectiveness.

国医大师张震精气形神生命观及郁证治疗经验

精、气、神为人身三宝。精为生命活动的物质基础,气是构成人体的基本物质和动力来源,为形体之本,与精同为神的物质来源,且与血、津、液的生成密切相关。精、气、形、神四要素紧密联系,共同构成精气形神生命观。“一体两翼、疏调气机”学术思想由国医大师张震所创,在疏肝基础上兼顾脾肾,使气机调畅,是精气形神生命观的具体体现。针对郁证肝失疏泄、气机失调的核心病机,具体为疏调气机可调气,健脾温肾能养精,调和五脏以治形,气血调和以宁神。在郁证治疗中,将疏肝解郁、健脾温肾相结合,选取辛散之药及花药,具有调气、养精、治形、宁神的功效,疗效明显。