MIL-PRF-49175C(CR)
4.6.3 Low Temperature. The cooler shall be tested in accordance with
MIL-STD-810, Method 502, Procedure I (see figure 7) except that the storage
temperature of step 2 shall be -62°C and low operating temperature of step 4
shall be -54°C. Failure to meet requirements of 3.6.3 shall constitute failure
of this test.
4.6.4 Shock. The cooler shall be tested in accordance with MIL-STD-810,
Method 516, Procedure IV, figure 516-1 (100 g's peak value at 11 milli-seconds
time duration) and procedure 4. Failure to meet requirements of 3.6.4 shall
constitute failure of this test.
4.6.5 Vibration. The cooler shall be tested in accordance with MIL-STD-
810, Method 514, Procedure VIII except that the curve shown in figure 4 of this
specification shall be used in lieu of the MIL-STD-810 curve. The sinusoidal
cycle time shall be 120 minutes per axis. The dwell time shall be 1/6 of the
cycling time at each resonance. Failure to meet requirements of 3.6.5 shall
constitute failure of this test.
4.7 Burn-in. Each cooler shall be subjected to a minimum of 12 hours
burn-in in accordance with figure 5. Failure of burn-in shall be defined as
failure to pass the inspections listed in table II after burn-in. Any unit
which fails and is repaired or is later altered, repaired or reworked, shall be
resubjected to burn-in.
4.8 Reliability. A contractor prepared reliability test plan shall be
used to demonstrate the reliability requirement of 3.8.
5.
PACKAGING
5.1 Packaging. For acquisition purposes, the packaging requirements
shall be as specified in the contract or order (see 6.2). When actual packaging
of material is to be performed by DoD personnel, these personnel need to contact
the responsible packaging activity to ascertain requisite packaging
requirements. Packaging requirements are maintained by the Inventory Control
Point's packaging activity within the Military Department or Defense Agency, or
within the Military Department's System command. Packaging data retrieval is
available from the managing Military Department's or Defense Agency's automated
packaging files, CD-ROM products, or by contacting the responsible packaging
activity.
6.
NOTES
(This section contains information of a general and explanatory nature
which may be helpful, but is not mandatory.)
6.1
Intended use.
The cooler is intended for use in infrared systems.
10
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