Gulfstream Aerospace G550, Руководство по эксплуатации

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2A-31-90: Weather Radar and Lightning Sensor
1. General:
The G550 is equipped with a PRIMUS-880 weather radar system incorporating a
twenty-four (24) inch flat plate radar antenna mounted in the nose cone that acts
as both receiver and transmitter (see Figure 19). The installation is referred to as
a Receiver / Transmitter / Antenna or RTA. The RTA operates in the X-band radio
frequency range (9,375
±
25 MHz) and provides both weather (precipitation)
detection and ground terrain mapping.
WARNING
THE RADAR SYSTEM PROVIDES ONLY WEATHER
DETECTION OR GROUND MAPPING. IT IS NOT
INTENDED FOR USE NOR CAN IT BE RELIED
UPON FOR GROUND PROXIMITY WARNING OR
FOR ANTI-COLLISION PROTECTION.
Incorporated in the antenna installation are all of the circuits necessary for signal
processing, scan conversion, output to cockpit displays and interface with the
radar control panels installed in the cockpit center console.
The two (2) independent control panels on the pilot and copilot side of the console
contain pushbutton switches and selector knobs to set the desired operational
characteristics of the radar. Both control panels may be active at the same time,
with the antenna alternating between the operational parameters set on each
panel at each sweep, effectively operating as a dual radar installation. If only one
(1) panel is selected ON, the inactive panel will slave to the selections made on
the operating panel. (The inactive panel will indicate the slave status by
illumination of the SLV light located on the bottom center of the panel as shown in
Figure 20.)
Radar return data is presented graphically in color on the MAP display with pull-
down menu choices using the Cursor Control Device (CCD) and/or on the
Horizontal Situation Indicator (HSI) section on the lower half of the Primary Flight
Display (PFD) through selections made with the Display Controller (DC).
Precipitation is displayed in colors corresponding to intensity:
•
MAGENTA - indicates areas of very heavy precipitation
•
RED - indicates areas of heavy precipitation
•
YELLOW - indicates areas of medium intensity precipitation
•
GREEN - indicates areas of moderate or light precipitation
When the ground mapping function is selected, terrain features will be presented
in colors corresponding to reflectivity with magenta as most reflective, yellow less
reflective and cyan least reflective.
An optional Lightning Sensor System (LSS) may be installed on the aircraft to
supplement weather radar information as an aid in avoiding weather related
hazards. The LSS detects the electromagnetic energy associated with lightning
and indicates the azimuth and range of the lightning strike as an overlay on the
active weather radar display(s).
A. Radar Control and Indications:
Two weather radar control panels and integrated controllers are installed
on the cockpit center console, each on the respective pilot and copilot side
OPERATING MANUAL
PRODUCTION AIRCRAFT SYSTEMS
2A-31-00
Page 51
July 15/04
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