JOHNSTON ATOLL
SCIENTIFIC
01005
Page
2
Large Launch Pad Concrete pads are designed for a loading of 70,000 pounds
with a vehicle in place. Launchers will be attached to pads by eighteen 1 1/2inch bolts located on a 6-ft. 6-in. bolt circle.
Maximum overturning moment
of these single boom launchers will be approximately 600, 000 ft. -pounds.
Medium Launch Pads
Concrete pads are designed for a loading of 40,000 pounds
with a vehicle in place. Launchers will be attached to pads by sixteen 1 1/2-in.
bolts located ona 4-ft.
6 1/2-in.
bolts circle.
Maximum overturning moment of
these single boom launchers will be approximately 500, 000 ft. -pounds.
Small Launch Pads Concrete pads are designed for a loading of 25,000 pounds
with a vehicle in place. Launchers will be attached to pads by six 1 1/2-in.
bolts located on a 3-ft. 6-in. boit circle. Maximum overturning moment of
these double boom launchers will be approximately 100,000 ft. -pounds.
Other Requirements All launch pads are 30-ft. diameter inscribed octagons.
The south firing pads will be bounded by a 50-ft. wide soil cement strip on the
north side. An additional 25-ft. compacted area will be provided on all other
sides of the pads. An adjacent dry, 6 x 6 x 3-ft. concrete pit equipped with a
3/8-in., blast proof, steel plate, hinged door will be provided for each pad.
Portable area lighting will be provided to allow a safety check of the launch pad
area prior tonighttimelaunches. Chemical latrines will be provided in the area
of the launchers.
Power required will be 3.7 kw of 208 volt, 60 cycle, 3 phase per launcher to
operate a5 HP motor.
The control system will utilize 110 volts, DC and the
firing system will utilize 110 volt, 60 cycle, 3 phase power. Anominal110 volt,
60 cycle, single phase auxiliary power circuit will also be installed at each
launcher pedestal to operate such items as soldering irons, trouble shooting lights,
etc.
Control cabling requirements are described in F&S No. 04019,
1-9
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VOLTI
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