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|  (NOrd)
MIL-T-18404
4.4.4.1. 1.5 On Wednesday. Thursday, and Friday the operations performed
on Tuesday shall be repeated.
4.4.4.1.1.6 The chamber temperature shall be raised to + 160F. and
95 percent humidity on Friday evening and shall be so maintained until 0800
Monday.
4.4.4.1.1.7 At 0800 Monday, the sequence Of operations described above
for Tuesday of the first week shall be followed and shall be repeated dally
until Friday of the second week.
4.4.4.1.1.8 On Friday the chamber temperature shall be reduced to
-65F., and this temperature shall be maintained unitl 0800 Monday of the
third week. The cycle is complete at 0800 Monday.
4.4.4.1.1.9 This sequence of temperature and humidity conditions shall
constitute one cycle. TWO such cycles shall be applied.
4.4.4.1.1.1C The second cycle is completed on Monday of the fifth week
at 0800 at which time the torpedo 18 allowed to return to room temperature.
4.4.4 2 Low temperature tests.
4.4.4.2.1 Torpedo ready non-operating.
4.4.4.2.1.1 Surface and underwater launched. - The torpedo shall be
placed in a test chamber whose temperature shall be levered to -20F.
5F. and maintained at this temperature for a period of 48 hours 5 hours.
At the end of this test period the torpedo, while still at the test temper-
ature of -20F., shall be performance checked.
4.4.4.2.1.2 Air launched. - The torpedo shall be placed in a test
chamber whose temperature shall be lowered to -40F,
5F. and maintained
at this temperature for a period of 48 hours 5 hours. At the end of
this test period the torpedo, while still at the test temperature of 40F.,
shun be Performance checked.
4.4.4.2.2 Torpedo ready or operating.
4.4.4.2.2.1 Air launched. - The torpedo shall be placed in a test chamber
o
whose temperature shall be levered to -40 F.
and maintained at this
temperature for a period of 48 hours
5 hours. At the end of this test
period the torpedo, while still at the test temperature of-4OF., shall be
performance checked.
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