SX-16 Nightsun
®
Searchlight System
Maintenance Manual
Document 031734-1/Revision A
031734-1 Revision B
January 27, 2014
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A light-weight Aluminum version for slow speed aircraft (up to 168 knots) has a
maximum service life of 7 years.
•
A heavier, high-strength Steel version for high-speed aircraft (up to 271 knots) and
has a maximum service life of 10 years
•
Our SpectroLink system enables accessory equipment (such as a movable camera) to
control the movements of the Searchlight. As a result, the movements of the accessory
equipment can be synchronized with the movements of the Searchlight. SpectroLink,
provides a stow feature, and it can be attached to the Gimbal assembly and Junction Box.
Reference the SpectroLink Operations Manual P/N 033600 for additional information.
•
Some users modify the Searchlights by adding limit switch type sensors or optical switches
that are tied into a stow circuit. In general, these circuits enable the Searchlight to rest in a
home position that is horizontal (and points forward) when it is turned off. This increases the
Searchlight to ground clearance on some belly mounted installations.
4.3.2
Gimbal Part Numbers Available by Description
The following are some of the available Gimbals.
019059 Series (Aluminum)
-10 Standard
-110 Standard High-Speed
-130 SpectroLink
-140 IFCO SpectroLink
-210 Enhanced (Uni-body)
-230 Enhanced (Uni-body) with SpectroLink
022955 Series (Steel)
-21 Standard
-121 Standard High-Speed
-130 SpectroLink
-140 IFCO SpectroLink
4.3.3
Elevation Attachment and Movement
In addition to the safety cables, two removable Wing Bolts (one on each side of the Searchlight)
attach the Searchlight to the Gimbal assembly. The Wing Bolts act as extensions of the bosses that
are welded to each side of the Searchlight housing.
•
The elevation Gearbox and motor are mounted on one side of the Gimbal arm, which is
called the drive side. On the drive side of the Gimbal arm:
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The Wing Bolt passes through the elevation Gearbox (through the Elevation drive’s
hollow shaft) into the Searchlight’s other mounting boss.
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A square drive output shaft on the Elevation Gearbox slips into a mating socket in the
Searchlight’s elevation stop, and this transmits the output power from the Gearbox
directly to the Searchlight.
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Screw heads (or drive pins) project from the inside of the Gimbal arm and come into
contact with the Searchlight’s Elevation Stop.
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The Elevation Stop limits Searchlight movement and prevents it from pointing in
unwanted directions. The Elevation Stop is fixed (cannot be adjusted).
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The service loop between the elevation Gearbox motor and Gimbal connector
permits motion between the Gimbal Arm and the Azimuth Gearbox, which remains
stationary.
Source: Spectrolab, Inc.
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The document reference is online, please check the correspondence between the online documentation and the printed version.
