求737NGAPU启动程序。

wsx12323 · 发表于 2010-11-1 07:07:14

迫切想知道737NGAPU启动程序，但又没时间仔细看手册，希望知道的朋友不吝赐教，希望讲解详细过程。

98742015 · 发表于 2010-11-8 17:33:10

同楼主所求

漂泊的机务 · 发表于 2010-11-8 17:46:50

打开电源
APU开关到START位，保持2秒松开
看APU排气温度就知道APU是否启动成功了
启动前注意做火警和灯光测试

anan206001 · 发表于 2010-11-8 18:47:38

This is the APU start sequence:
* The start sequence starts when the APU switch is put to the
START position and released to the ON position.
* The ECU turns on the oil pressure light on the P5 panel when
the ECU receives the start signal. The low oil pressure light
goes out at 30-40 psi oil pressure.
* The ECU opens the APU fuel shutoff valve and air inlet door.
The inlet door switch sends a door open signal to the ECU
when the air inlet door is open.
* At 0 percent speed and before the start system is energized,
the ECU energizes the ignition unit.
* If the air inlet door is open and the APU speed is less than 7
percent, the ECU sends a start signal to the SCU. If the APU
speed is more than 7 percent, the ECU waits until the speed
is less than 7 percent.
* If 115v ac is available on transfer bus 1, the SCU sends a
start signal to the ac to dc converter in the SPU. The ac to dc
converter gives 270v dc power to the SCU.
* If 115v ac is not available on transfer bus 1, the SCU sends a
start signal to the dc to dc converter in the SPU. The dc to dc
converter gives 270v dc to the SCU. The SCU also has a
control function to prevent the DC to DC converter from
depleting the battery below limits (18v dc on ground, 20v dc
in air) during a DC start attempt. The proximity switch
electronics unit (PSEU) provides the air/ground input.
* The dc to ac converter in the SCU changes the 270v dc power
from the SPU into three-phase start power. This power goes
to the starter-generator. The starter-generator turns the APU
turbine shaft. The SCU receives starter-generator rotor
position from the starter-generator resolver. The SCU uses
this signal to synchronize the three-phase start power to the
starter-generator rotor position.
* At 7 percent speed, the ECU energizes the fuel solenoid
which supplies fuel for combustion.
* At approximately 30 percent speed, oil pressure goes above
30-40 psi. The oil pressure switch removes the low oil
pressure signal. The ECU turns off the low oil pressure light.
* At 60 percent speed, the ECU deenergizes the ignition unit.
* At 70 percent speed, the ECU removes the start signal from
the SCU. The SCU removes the start signal from the SPU ac
to dc and dc to dc converters. This deenergizes the startergenerator.
* At 95 percent speed, plus two seconds, the ECU gives the
ready to load (RTL) signal to other airplane systems. This
signals the airplane systems that the APU is ready to accept
pnuematic and electrical loads.

兵不血刃 · 发表于 2011-3-2 20:51:39

打开电源
APU开关到START位，保持2秒松开
看APU排气温度就知道APU是否启动成功了
启动前注意做火警和灯光测试

chaoren13636 · 发表于 2011-3-2 21:36:44

吸血你

zsu_05 · 发表于 2011-3-5 16:24:56

手册是最详细的

dlzqz · 发表于 2011-3-5 16:55:22

启动前做火警测试，灭火瓶爆炸帽测试

Raymond-01 · 发表于 2011-11-22 20:24:43

怎么是英文的呀

huohongliang · 发表于 2011-11-23 05:26:23

手册上有啊！

shenchaoyuan · 发表于 2011-11-24 20:43:28

手册上有啊！

cguo03 · 发表于 2011-11-25 01:08:30

启动前需要检查的和确定的东西挺多的就不说了
正常是接通电源等半分钟以上  检查电压什么的  做火警测试
然后把APU其中电门搬到  start  位几秒钟松开自动回到on位
观察排气温度  一般升到8 就下降到正常超过就停止启动
然后汇流条供电开引气就OK了

小夥子 · 发表于 2011-11-25 12:07:01

见手册49-11-00，evente for the APU start sequence
这个图很详细的说明了，APU启动步骤，很详细

zhfboshi · 发表于 2011-11-25 21:25:49

最近本的

212173 · 发表于 2013-5-23 14:29:28

挺实用的，对航线经常启动APU实用

737御守 · 发表于 2013-5-26 07:08:15

要是新人，最好还是好好看看手册吧，不要只知其一不知其二

wodepenyu · 发表于 2013-5-26 09:16:03

建议你查手册，这样记忆深刻

wanglei8291 · 发表于 2013-5-28 08:42:35

启动前检查燃油量，液力油量~做火警和灯光测试~打开电源~APU开关到START位，保持2秒松开~
看APU排气温度就知道APU是否启动成功了

tang521zhiyuan · 发表于 2013-5-28 13:55:17

干两把就知道了

laociwei1987 · 发表于 2013-5-28 17:31:53

手册是最快的

james23 · 发表于 2013-5-29 20:54:31

anan206001:This is the APU start sequence:
* The start sequence starts when the APU switch is put to the
START position and released to the ON position.
* The ECU turns on the oil pressure light on the P5 panel when
the ECU receives the start signal. The low oil pressur .. (2010-11-08 18:47)

这是原文手册啊看不懂

[s:597][s:597][s:597]

大大大飞 · 发表于 2013-5-29 23:20:41

差不多就是他们说的那个样子，最好在看看手册，看看注意事项。

黎平安 · 发表于 2014-11-17 16:08:31

恩上面说的很清楚明白了

w898523y · 发表于 2014-11-26 21:33:42

不知道手册为什么当启动apu时要打开一个空调组件

狗尾草 · 发表于 2014-11-27 08:45:51

启动前注意做火警和灯光测试
打开电源
APU开关到START位，保持2秒松开
看APU排气温度就知道APU是否启动成功了

dxb1028 · 发表于 2014-11-27 12:33:47

启动前检查燃油量，液力油量~做火警和灯光测试~打开电源~APU开关到START位，保持2秒松开~
看APU排气温度就知道APU是否启动成功了

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