发动机执行正常关闭程序必须？

deathgod85 · 发表于 2013-3-6 20:08:20

拉回油门关闭阀？关闭主要燃料阀和燃料切断阀？还是先让发动机稳定在动selector关闭发动机？

knavewalp · 发表于 2013-3-7 09:58:54

正常关车工卡：71-00-00-700-819-F00
(1) Move the thrust lever for the applicable engine to the minimum idle position.
CAUTION: DO NOT STOP THE ENGINE UNTIL THE ENGINE ROTORS AND CASES HAVE BECOME THERMALLY STABLE AND COOL AT IDLE SPEED. IF YOU DO NOT OBEY THIS INSTRUCTION, LOCKED TURBINE ROTORS AND DAMAGED TURBINE AIR SEALS CAN OCCUR.
(2) If you operated the engine at more than minimum idle, decrease the engine speed to idle and operate at idle as follows:
NOTE: This will also permit temperatures below the cowling to decrease and not overheat the
core-mounted components.
(a) If the engine was operated at more than low idle, operate the engine at low idle for a minimum of 3 minutes before you stop the engine.
NOTE: Taxi time at or near the idle speed can be part of the three minute time limit to cool the engine.
.....（还有很多就不复制了太占地方）
大概就是说，把发动机推力杆移到最小慢车位，等发动机整体冷却下来之后才能关闭，不然会对发动机的涡轮压气机什么的造成损害。当发动机超过慢车转速工作时，需要慢车三分钟完成对发动机的冷却（滑行时因为接近慢车转速，所以可以算在冷却时间内），如果还不行的可以冷转发动机；然后确保P5板上的电门处于正确位置，并打开APU引气；最后把启动手柄移到关闭位，同时监控发动机的各项参数，最后关闭油箱增压泵。
当然工卡中还提到了各种其他状况，还有非正常关车工卡：71-00-00-700-820-F00 Stop the Engine Procedure (Emergency Engine Stop)，你可以自己去看看，讲的挺详细的

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[GE] 发动机执行正常关闭程序必须？

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