SeaSpace TeraScan 1.5M, Operation And Maintenance Manual

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TeraScan 1.5m Polar Satellite Tracking Antenna O & M Manual
5
1.6.1.2 Wind Loads
1.6.1.3 Shipboard Equipment Operating Limits
Antenna
Radome
Weight
(Empty)
Vertical
Dead
Load
(Antenna
and
Radome)
Horizontal
Wind
Shear
Overturning
Moment
referred
to bottom
of radome
Bolt Torque
Wind Loads at 68 m/s (242 km/hr) (150 mph) (131 knots)
1.5m (60") dish
1.82m (73") radome
50 kg
(110 lbs)
132 kg
(290 lbs)
319 kg
(703 lbs)
2,847 Nm
(2,100 ft-lbs)
1/2": 88-115 Nm
(65-85 ft-lbs)
1.5m (60") dish
2.0m (79") radome
90.7 kg
(200 lbs)
155 kg
(342 lbs)
319 kg
(703 lbs)
2,847 Nm
(2,100 ft-lbs)
12mm: 88-115 Nm
(65-85 ft-lbs)
Vibration Withstand externally imposed vibrations in two horizontal directions and in the vertical
direction, at sweep rates no greater than 0.2 octaves per minute having peak single
amplitudes as follows:
Frequency Range, Hz Peak Single Amplitude, Inch
4 - 10 0.100
10 - 15 0.030
15 - 25 0.016
25 - 33 0.009
Corrosion Parts are corrosion resistant or treated to endure effects of salt air and salt spray. The
equipment is specifically designed and manufactured for marine use.
Ship Motions
Roll:
Pitch:
Yaw:
Turning rate:
Headway:
Mounting height:
± 25 degrees with 6 to 12 sec periods
±15 degrees with 6 to 12 sec periods
± 8 degrees with 15 to 20 sec periods
Up to 12 deg/sec
Up to 50 knots
Up to 150 feet