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Page Title:
Table VIII. Shock Test Schedule |
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|  MIL-V-82444A(OS)
TABLE VIII
SHOCK TEST SCHEDULE
4.4.4.7 Temperature and humidity, nonoperating condition. Four
preproduction valves shall be subjected, in the nonoperating condition,
to temperature and humidity cycling in the following manner: The
specimen shall be placed in a temperature chamber which has0 been stab-
ilized at an environmental temperature of -45 F +0 -5 F. The specimen
shall remain in the environment for 6 hours. (As an alternative procedure,
the specimen may be placed in the chamber, with the chamber at room ambient
0
0
0
temperature. Chamber temperature shall then be reduced to -45 F +0 -5 F
within 2 hours maximum. The specimen shall therafter remain in the chamb
for 4 hours). The specimen shall then be subjected to an environmental
temperature of +140 F +5 F -0 F. Maximum transition time from the
low temperature to the high temperature shall be 2 hours. The specimen
shall remain in the high temperature environment for 4 hours. This cycle
shall be performed 3 times; maximum transition time shall be 2 hours. The
specimen shall subsequently be subjected to an environment of +110 F
0
0
+5 -0 F at a minimum relative humidity of 95 percent for a minimum of 8
hours. Thereafter, 2 valves shall be operated in accordance with 4.4.4.8
and 2 valves shall be operated in accordance with 4.4.4.9. Prior to
operation the valves may be wiped dry. Drying by an air blast or oven is
not permitted.
*
4.4.4.8 Low temperature operating. Before testing, the valves
installed in its test chamber in the ready condition, shall be condit-
0
ioned at a temperature of 0 F 5 F for a period of 1 hour. The valve
shall then be operated in accordance with and meet the requirements of
4.4.4.11 at an environmental temperature of +32 F 5 F. The valve shall
thereafter meet the requirements of 4.4.4.12 through 4.4.4.14.
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