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Page Title:
Shock; transportation, storage, and handling |
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|  MIL-V-82466(OS)
4.4.1.3 Fixed frequency vibration. The equipment shall then be
vibrated for a period of three minutes at each of the four most severe
resonant frequencies at the amplitude specified above and in a plane
observed to give the most severe reaction.
4.4.1.4 The equipment shall be inspected to ascertain that no fixed
parts have become loose or damaged. The equipment shall then be operated
to demonstrate that the performance required in this specification is
maintained.
4.4.1.5 Vibration; transportation. The system, packaged and packed
as specified in Section 5, shall be vibration tested as specified in
Weapons Requirement WR-11.
4.4.2 Shock test. The Vacuum-Air-Nitrogen Distribution System shall
be tested in accordance with the following procedure:
4.4.2.1 Mount the system on a shock testing machine (NSSC Drawing
10-T-2I45) as specified in 3.4.2.1, and subject it to a total of nine
blows. Three blows shall be applied parallel to each of the three
principal axes of Panel 1874290. Hammer drop heights for the back blow
and side blow shall be one foot, two feet, and three feet. For the top
blow, the height of hammer drop shall be two feet, three feet, and four
feet. After each blow, the panel shall continue to perform in accord-
ance with the requirement of this specification.
4.4.2.2 Shock; transportation, storage, and handling. The system
packaged and packed as specified in Section 5, shall be subjected to the
appropriate shock isolation tests specified in Weapons Requirements
WR-11.
4.4.3 Temperature and humidity tests. The VAND System shall be sub-
jected to the following temperature and humidity tests:
4.4.3.1 With the equipment stabilized at an ambient temperature of
77 degrees F, and with a humidity of up to 95 percent relative maximum,
the system shall be operated for a twenty-minute period. At the conclusion
of this period the Vacuum-Air-Nitrogen Distribution System shall meet the
performance and other requirements specified in this specification.
4.4.3.2 The ambient temperature of the equipment shall be lowered to
32 degrees F and sufficient time for temperature stabilization shall be
allowed. At the conclusion of this period all controls shall be readily
manipulated and the Vacuum-Air-Nitrogen Distribution System shall meet
the performance and other requirements specified in this specification.
4.4.3.3 The ambient temperature shall be raised to 131 degrees F and
sufficient time for temperature stabilization shall be allowed. At the
conclusion of this period all controls shall be readily manipulated and
VAND System shall meet the performance and other requirements specified
in this specification.
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