谁能把这块板详细讲一下

1931 · 发表于 2016-2-15 19:01:25

这块板平时基本用不到，有没有哪位懂得讲一下功用？就是有N1 set,SPD REF这两个。

khe_2006 · 发表于 2016-2-21 18:33:48

SPD REF旋钮是用来人工设置PFD上显示的一些基准速度的，一般是在FMC没有计算成功的时候人工使用。
General
The takeoff and landing airspeed bugs show on the PFD speed
tape indication. The bugs are set automatically by the FMC or,
they can be set manually by the flight crew using the speed
reference selector on the engine control panel. When set
manually, the airspeeds show on the PFD speed tape indication
and a digital display of the set value shows.
You also use the speed reference selector to manually set the
airplane takeoff or landing gross weight. CDS will use this
weight value to calculate and display the flap maneuvering
speeds.
Speed Reference Selector
The outer control has these functions:
* AUTO (the FMCS supplies the reference airspeeds and
gross weight automatically)
* V1 (shows the takeoff decision speed on the ground and
shows INVALID ENTRY in-flight)
* VR (shows takeoff rotation speed on the ground and shows
INVALID ENTRY in-flight)
* WT (the pilot can set the gross weight manually)
* VREF (shows the landing reference speed (REF) in the air
and shows INVALID ENTRY on the ground)
* Triangle symbol (shows an airspeed bug the pilot can set)
* SET (the FMC and the inner control cannot move the
airspeed bugs)
The inner control sets the selected bug to the desired airspeed
or sets gross weight. The control is spring loaded to center.

The thrust mode annunciation display shows the active N1 limit
mode calculated by the FMCS. The reference N1 bugs (2) show
the N1 limit for the active mode. The N1 limit mode controls the
N1 limit for autothrottle operation.
The reference N1 readouts may be set manually. They are set
with the N1 SET CONTROL inner knob. When the reference N1
readout is set manually, the N1 bugs show the N1 reference
readout value. These manually set limits have no effect on
autothrottle operation.
上面对应的1即是1发，2即是2发

littlestar · 发表于 2016-2-24 23:23:28

学习了，受用

niftycarl · 发表于 2016-2-25 02:26:08

It's far too many learning points...

1931 · 发表于 2016-3-8 17:28:35

khe_2006 发表于 2016-2-21 18:33
SPD REF旋钮是用来人工设置PFD上显示的一些基准速度的，一般是在FMC没有计算成功的时候人工使用。
General
...

牛非常感谢很专业

jlfayn · 发表于 2016-3-9 21:42:27

很受用谢分享

帐号		自动登录	找回密码
密码			立即注册

[22自动飞行] 谁能把这块板详细讲一下

实名认证

中国民航大学

南航