MIL-PRF-44408C
4.2.11 Impact resistance. A hand tool as defined in 3.2.10 shall be selected
and shall be allowed to freefall from a height of 30 inches onto the floor surface
of the shelter. Failure to meet the requirements of 3.2.11 shall constitute
failure of this test.
4.2.12 Roof access steps/handholds. A vertical load of 400 lbs. shall be
applied one step at a time to the outer most point of each deployed step and
maintained for 30 seconds. The access steps/handholds shall be evaluated for
compliance with 3.2.12. Failure to meet the requirements of 3.2.12 shall
constitute failure of this test.
4.2.13 Interface requirements. The interfaces shall be evaluated for compliance
with the interface drawings listed in 3.2.13. Failure to meet the requirements of
3.2.13 shall constitute failure of this test.
4.3
Environmental Performance Verification.
4.3.1 Marine atmosphere. The shelter, in the operational and storage mode,
shall be exposed to a marine atmosphere and tested in accordance with ASTM 27-95,
paragraph 10.10. Failure to meet the requirements of 3.3.1 shall constitute
failure of this test.
4.3.2 Electromagnetic interference (EMI). The shelter shall be tested in
accordance with IEEE STD 299-1991 except that the measurements shall be made at
150 kHz and 14 Mhz in the H-field and 400 MHz, 1 GHz, and 10 GHz in Plane Wave.
Failure to meet the requirements of 3.3.2 shall constitute failure of this test.
4.3.3
Climatic range.
4.3.3.1 Temperature range. The shelter shall be tested in accordance with PS
27-95, paragraph 10.11. Failure to meet the requirements of 3.3.3.1 shall
constitute failure of this test.
4.3.3.2 Temperature shock. The shelter shall be tested in accordance with test
method standard MIL-STD-810, Method 503.3. Failure to meet the requirements of
3.3.3.2 shall constitute failure of this test.
4.3.3.3 Solar load. The shelter shall be tested in accordance with PS 27-95,
paragraph 10.12. Failure to meet the requirements of 3.3.3.3 shall constitute
failure of this test.
4.3.3.4 Sunshine (ultraviolet effects). The shelter's exterior components
subject to solar exposure shall be tested in accordance with test method standard
MIL-STD-810, Method 505.3, procedure 1. Failure to meet the requirements of
3.3.3.4 shall constitute failure of this test.
4.3.3.5 Humidity. The shelter shall be tested for daily exposure of up to 97%
relative humidity for 20 hours and exposure of 100% relative humidity (with
condensation) for 4 hours in accordance with test method standard MIL-STD-810,
Moisture Resistance Test, Method 507, procedure II, cycles 4 or 5. After cycling
has been completed the shelter shall be inspected. Failure to meet the
requirements of 3.3.3.5 shall constitute failure of this test.
4.3.4 Heat transfer. The shelter shall be tested in accordance with PS 27-95,
paragraph 10.14. Failure to meet the requirements of 3.3.4 shall constitute
failure of this test. The Type II and III shelters may have the tunnel openings
closed off for this test.
4.3.5 Blowing dust/sand. The shelter shall be tested in accordance with test
method standard MIL-STD-810, Method 510.1, procedure I except the sand particle
size shall be as specified in table VI
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