General Dynamics SATCOM Technologies KX 120, Руководство по эксплуатации и техническому обслуживанию

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600-1152A 2
2.0 ANTENNA COMPONENTS AND CHARACTERISTICS
The VertexRSI Kingpost Pedestal Antenna is designed, engineered, and manufactured
for maximum life and minimum maintenance. The high gain feed system and rigid
reflector assembly are supported by the all-steel, four-point mount Kingpost Pedestal.
The design of the system assures the following operational and survival conditions.
Table 1. Antenna Operating Conditions
Condition Wind Velocity Gusts
Operational 30 mph (48 km/h) 45 mph (72 km/h)
Operational (Degraded) 45 mph (72 km/h) 60 mph (96 km/h)
Survival (any position) 125 mph (200 km/h)
This section lists a brief general description of the antenna system. More detailed
operation and maintenance instructions are covered in subsequent sections. All
pertinent antenna system drawings are referenced in the Project Print Pack shipped with
the antenna.
2.1 Pedestal Assembly
A two-axis elevation-over-azimuth kingpost pedestal is used to accurately position the
RF axis of the antenna. The assembly consists of all-steel construction and includes the
following:
•
Kingpost pedestal
•
Rear support legs (3)
•
Jack drive assemblies
•
Azimuth pintle assemblies
•
Azimuth drive pivot (deadman) assembly
Damage, repair, or standard maintenance should be addressed of immediately on all
parts of the antenna structure to avoid any weather accelerated deterioration. Refer to
Section 3 for maintenance schedules and procedures.
Kingpost travel capabilities (1-position):
Elevation Axis Travel:
0° to 90° continuous
Azimuth Axis Travel: 120° continuous
Kingpost travel capabilities (2-position):
Elevation Axis Travel:
0° to 90° continuous
Azimuth Axis Travel: 200° total in two (2) segments of 120° each, 20° overlap
between the 120° segments.
2.2 Reflector Assembly
An 11.1-Meter diameter modified paraboloid reflector, constructed from 36 high accuracy
panels, is combined with a high performance cassegrain feed system to give maximum
efficiency with low sidelobes.