发动机冷转时候，起动机的限制怎么理解？

bigairplane

NOTE: Make sure that you do not go over the starter limits that follow:
- no engagement of the starter when the core speed is above 20 percent.
- the acceptable duty cycles can be performed by using one the three following procedures:
- 4 consecutive cycles, each of 2 minutes duration with a 20 second rest between 2 consecutive attempts. After 4 cycles, wait 15 minutes to allow starter to cool before you try a new start or motoring.
- one 5 minute cycle followed by a cooling period of 2 minutes after the first motoring and a 10 minutes interval between the following ones.
- one 15 minute cycle followed by a 15 minute cooling period before you try a new start or motoring.
t is recommended to use the 15 minute cycle only for cooling the engine to do a borescope inspection



最后三句完全不理解什么意思。这个是什么意思啊？
这是空客AMM手册80-10-00上复制下来的。

cafucs

三种情况：
第一种，转2MIN，停20S。转2MIN，停20S。转2MIN，停20S。转2MIN，停15MIN。重复下一个循环。
第二种，转5MIN,停2MIN，转5MIN，停10MIN，重复下一个循环
第三种，转15MIN，停15MIN，重复下一个循环

武心

通俗易懂，评论的很好

飞FLY

循环的限制有要求，机型书上有说