MIL-DTL-85110B(AS)
and obtain results in accordance with MIL-STD-810.
4.2.2.2. High temperature. The high temperature test shall be performed in accordance with
MIL-STD-810, Method 501.3, Procedure II, except that the steps shall be as follows:
Step 1. The RRHB shall be examined per 4.2.1 and subjected to the actuation (see 4.2.4.1)
and manual release (see 4.2.4.2) tests under the standard ambient conditions
specified in MIL-STD-810. A record of specific pretest data shall be
made to determine that the RRHB is within the requirements of 4.2.1, 4.2.4.1 and
4.2.4.2.
Step 2. Raise the internal chamber temperature to 66°C (150° F).
Step 3. Maintain internal chamber temperature for 6 hours at 66°C (150°F).
Step 4. Raise the internal chamber temperature to 71°C (160°F) within a time period of 1
hour and then maintain at the temperature for 4 additional hours.
Step 5. Lower the internal chamber temperature to 66°C (150°F) within a time period of
1 hour.
Step 6. Repeat steps 3, 4, and 5 two additional times (making a total of three 12 hour
cycles.)
Step 7. Adjust the internal chamber temperature to 71°C (160°F) and maintain until
temperature stabilization of test item is reached.
Step 8. Remove RRHB from chamber and install on a test fixture within a five minute
time period. Perform the actuation (see 4.2.4.1) and manual release (see 4.2.4.2)
tests, after which examine the test time per 4.2.1.
Step 9. Return the RRHB to standard ambient conditions and stabilize.
Step 10. Remove the RRHB from the test chamber and perform the examination
(see 4.2.1), actuation (see 4.2.4.1), and manual release (see 4.2.4.2) tests on the test
samples and obtain results in accordance with MIL-STD-810.
NOTE: The rate of temperature change (steps 2, 4 and 6) may be the maximum attainable by the
chamber, but shall not exceed 10°C (18°F) per minute.
4.2.2.3 Low temperature. The low temperature test shall be performed in accordance with
MIL-STD-810, Method 502.3, Procedure I, except that the steps shall be as follows:
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