SECTION 1
DESCRIPTION
OVERVIEW
The GNS-XLS Flight Management System is an integrated system
designed to give the pilot centralized control for the navigation sen-
sors, computer based flight planning, fuel management, and radio
management. The GNS-XLS has a full color flat panel LCD display,
alpha-numeric and function keys, a Global Positioning Sensor (GPS),
and a navigation data base. All these are housed in a panel/pedestal
mounted Control Display Unit (CDU).
All aircraft interface requirements are accomplished through the
GNS-XLS. The system supports analog and digital inputs in any com-
bination. Specific aircraft requirements are programmed into a
Configuration Module. This module mounts directly to the rear con-
nector, thus remaining in the aircraft. This allows hardware to be eas-
ily moved between aircraft types without changing system configura-
tion. The following is a summary of the digital and analog interfaces:
DIGITAL ANALOG
AFIS Altitude
Air Data Computer Altitude Rate
EFIS Cross Track Deviation
Fuel Flow Discretes
Inertial Navigation Sensor Dual VOR/DME
Inertial Reference Sensor Fuel Flow
VOR/DME, ADF, XPDR, COMM Heading
Radio Tuning HSI Course & Bearing
RPU - VLF/Omega Roll Steering
Cross Side FMS True Air Speed
Vertical Deviation
In addition to the GPS sensor, position information is accepted from
up to eight navigation sensors, such as an optional VLF/Omega
RPU, inertial position sensors, or VOR/DME radios. These navigation
sensor inputs can be blended to form a single composite position.
Accuracy of this composite position is enhanced by using the best
characteristics of each type of sensor. For example, an Inertial
Description
1-1
GNS-XLS Flight Management System
Rev. 3
Sep/96
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