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Preproduction and Periodic production inspection |
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|  MIL-T-82571A(OS)
4.4.5.24 Packaging, packing, and marking. The packaging, packing, and
marking of the torpedo tube assembly shall be examined to ensure that it
complies fully with the requirements of Section 5.
4.5 Preproduction and Periodic production inspection. The preproduction
and periodic production samples, after satisfactorily passing the quality
conformance inspections detailed in 4.4, shall be subjected to the following
tests and examinations. Failure to meet any requirement specified herein
shall be considered cause for rejection of the lot represented and units
tested.
4.5.1 Vibration tests
4.5.1.1 Vibration, nonoperating. The torpedo tube, secured to the mount-
ing bracket of the testing machine in the same manner that it will be secured
on shipboard, shall be subjected to the exploratory vibration test, variable
frequency test, and endurance test as specified in MIL-STD-167 for Type I
vibrations.
4.5.1.2 Vibration, standby condition. The top barrel of the torpedo tube
shall be loaded with a dummy Mk 46 Mod 1 Torpedo, and the bottom barrel shall
be loaded with a dummy Mk 44 Mod 1 Torpedo. Both breech assemblies shall be
pressurized to 2000 psig. The torpedo tube, loaded as specified and secured
to the mounting bracket of the testing machine in the same manner that it
will be secured on shipboard, shall be subjected to the exploratory vibration
test, variable frequency test, and endurance test as specified in MIL-STD-167
for Type I vibrations.
4.5.2 Shock tests
4.5.2.1 Shock, nonoperating. The torpedo tube assembly shall be attached
to the anvil table of the shock testing machine by means of a standard mount-
ing platform and a 30 degree mounting fixture as specified in MIL-S-901 for
medium-weight equipment. The torpedo tube shall be oriented on the 30 degree
mounting fixture such that the barrel center lines are parallel to the hori-
zontal plane. In each mounting condition the torpedo tube shall be subjected
to Type A shock tests as specified in MIL-S-901 for medium-weight equipment.
4.5.2.2 Shock, loaded condition. The torpedo tube assembly shall be at-
tached to the anvil table of the shock testing machine by means of a standard
mounting platform and a 30 degree mounting fixture as specified in MIL-S-901
for medium-weight equipment. The lower barrel of the torpedo tube shall be
loaded with a dummy Torpedo Mk 44 Mod 1 and the top barrel shall be loaded
with a dummy Torpedo Mk 46 Mod 1. The torpedo tube shall be oriented on the
30 degree mounting fixture such that the barrel centerlines are 30 degrees
from the horizontal plane.
In each mounting condition the torpedo tube shall
be subjected to Type A shock tests as specified in MIL-S-901 for medium-weight
equipment.
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