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庞巴迪挑战者605公务机机组操作手册 CL605-CHAPTER 17 -导航系统 NAVIGATION SYSTEMS(36)

时间:2011-10-31 11:53来源:蓝天飞行翻译 作者:公务机
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Function Keys
Dedicated function keys allow direct access to certain flight management or cockpit management features of the FMS.
Certain CDU displays have multiple pages, as indicated in the top right corner of the display screen. Access to the other pages is achieved using the PREV and NEXT function keys.
MFD Function Keys
Three function keys relate specifically to MFD displays. The MFD DATA and MFD MENU keys control the type of information available on the MFD. The MFD ADV key allows access to multiple pages of MFD information. When the PLAN MAP format of the MFD is in use, the MFD ADV key allows the flight crew to view the waypoints of their flight plan.


 NAVIGATION SYSTEMS Description  Vol. 2  17.10.80 
Oct 05/06 


FMS Control Display Unit (CDU) Figure 17.10.74

Flight Management Computers (FMCs)
The flight management computers are installed in the integrated avionics processing system (IAPS). The FMCs receive flight crew inputs from the CDU, and perform all the flight management and cockpit management functions. Each FMC contains a navigation database, which it uses to execute the active flight plan.
Integrated Navigation Solution
The integrated navigation solution is the FMS-calculated position of the aircraft, in latitude and longitude. The FMCs receive data from all aircraft navigation sensors, and continuously calculate the integrated navigation solution. GPS is normally the highest priority sensor used in this position calculation, but a combination of DME/DME, VOR/DME, and IRS information is also used, according to predetermined blending algorithms. The FMC rejects sensor data that is not valid, and advises the flight crew of position determination errors through the CDU message system.


 NAVIGATION SYSTEMS Description  Vol. 2  17.10.81 
Oct 05/06 

Flight Plan Tracking
By comparing the integrated navigation solution to the navigation database and the active flight plan, the FMC calculates and displays the aircraft’s position relative to the flight plan routing, and issues steering commands to the flight control computers to track the lateral and vertical components of the active flight plan.

Data Base Unit (DBU)
The data base unit (DBU) is a panel-mounting data loader with a disk drive, that is used with the FMS system and the maintenance diagnostic computer. The FMS system uses the DBU to load database updates from diskettes into the FMS computers. The integrated avionics processing system (IAPS) maintenance diagnostic computer uses the DBU to upload maintenance tables from diskette, or download maintenance data files to diskette. High-density and double-density 3-1/2 inch diskettes are acceptable. The unit has a “drive in-use” indicator and a disk eject button.
The navigation database is loaded into each FMC individually through the DBU. Flight plans and waypoints may also be loaded or stored on disk through the DBU.
 
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