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|  MIL-B-48447A(MU)
normal mounting or operating position (as depicted in the front view on
Sheet 1 of Drawing F11747900). The body-assembly shall be clamped on the
vibrating equipment by means of an appropriate adapter having the same in-
terface features as Periscope: M35E1. The body assembly shall then be
vibrated in accordance with the test procedure specified above and swept
logarithmically for the time period specified in 3.4.4. Immediately follow-
int the vibration cycle, and prior to the examination for physical defects
resulting from poor workmanship and materials, the body assembly shall be
subjected to the test in 4.6.7.1.1 Subsequent to the test in 4.6.7.1, the
body assembly shall be thoroughly examined for physical defects resulting
from poor workmanship and materials to determine compliance with 3.4.4,
prior to being subjected to the remaining tests specified herein. A visual
examination shall be made for missing or damaged parts. A tactile examina-
tion shall be made for functioning of moving parts for undue irregularities
of movement, friction or looseness. An audible examination shall also be
made of the body assembly for loose internal optical and mechanical compo-
nents. Any one of the possible defects defined above shall be cause to
consider a body assembly defective. Body assemblies which have passed
the above examinations shall then be subjected to the tests specified in
4.6.5 through 4.6.7.10 inclusive.
4.6.4.3 Shock. - This test shall be performed on body assemblies .
procured as a repair part item. When the body assembly is provided with
a complete periscope this shock test will not be required when the com-
plete periscope is subject to shock. Prior to performing this test, the
body assembly shall be subjected to the test procedure specified in
4.6.3 to determine compliance with 3.10.1. The shock equipment and test
procedure shall be in accordance with Procedure I, of Method 516.2
specified in MIL-STD-81O, except conditions such as "G" values, time
duration-and wave form shock pulse shall be as specified in 3.4.5. The
body assembly shall be clamped on the shock equipment by means of an
appropriate adapter having the same interface features as Periscope:
M32E1. The body assembly shall then be shocked in accordance with the
test procedure specified above, except the application of shock along
the vertical axis shall be in one direction only (normal operating
position of the body assembly). Immediately following the shock test
and prior to the examination for physical defects resulting from poor
workmanship and materials, the body assembly shall be subjected to the
test in 4.6.7.1. Subsequent to the test in 4.6.7.1, the body assembly
shall be thoroughly examined for physical defects resulting from poor
workmanship and materials to determine compliance with 3.4.5, prior to
being subjected to the remaining tests specified herein. A visual
examination shall be made for missing or damaged parts. A tacile
examination shall be made for functioning of moving parts for undue
irregularities of movement, friction or looseness. An audible examination
shall also be made of the body assembly for loose internal optical and
mechanical components Any one of the possible defects defined above
shall be cause to consider a body assembly defective. Body assemblies
which have passed the above examinations shall then be subjected to the
tests specified in 4.6.5 through 4.6.7.10 inclusive.
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