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|  MIL-R-85523A(AS)
this temperature, the regulator shall be subjected to the conditions of Table IV
and shall pass the requirements specified in 3.6.7.2.
4.8.7.3 Temperature shock. The regulator shall be subjected to the
temperature shock test of MIL-STD-810, Method 503. The inlet, outlet and bleed
ports shall be capped during the exposure. The low temperature shall be -65
5F and the high temperature shall be 160 5F. The regulator shall pass the
requirements specified in 3.6.7.3.
4.8.8 Vibration. The regulator shall be hard mounted to the vibration
fixture, with a pressure of 30 psig applied to the inlet of the regulator and an
outlet flow of 50 lpm. The regulator shall be vibrated for 3 hours in each of
the three major axes at a frequency from 500 to 2500 to 500 cycles per minute at
a sweep rate of 15 minutes, and a double amplitude of 0.018 to 0.020 inch.
During vibration, the regulator shall pass the requirements specified in 3.6.8.
4.8.9 Acceleration. The regulator shall be mounted to the acceleration
fixture, with a pressure of 30 psig applied to the inlet of the regulator and an
outlet flow of 50 lpm. The regulator shall be subjected to an acceleration force
of 7g in six different directions. One force shall be applied at a time in the
direction specified in Figure 5. During the application of each acceleration
force, the regulator shall pass the requirements specified in 3.6.9.
4.8.10
Shock. The regulator shall be subjected to the following shock
testing. The height of the drop shall be 29.0 1.0 inches. The regulator shall
be released from a quick-release or drop tester. The floor or barrier receiving
the impact shall be two-inch plywood backed by concrete. The regulator shall be
dropped 10 times on various random faces, edges and corners. The regulator shall
pass the requirements specified in 3.6.10.
4.8.11 Humidity. The regulator shall be subjected to the humidity test of
MIL-STD-810, Method 507, Procedure II. The inlet, outlet and bleed port shall be
capped during the exposure. The regulator shall pass the requirements specified
in 3.6.11.
4.8.12 Salt fog. The regulator shall be subjected to the salt fog test of
MIL-STD-810, Method 509, Procedure I, except the salt fog shall be as specified
in Table XI. The inlet, outlet and bleed ports shall be capped during the
exposure. The regulator shall pass the requirements specified in 3.6.12.
4.8.13 Dust (fine sand). The regulator shall be subjected to the dust test
of MIL-STD-810, Method 510, Procedure I. The inlet, outlet and bleed ports shall
be capped during the exposure. The regulator shall pass the requirements
specified in 3.6.13.
4.8.14 Endurance. The regulator shall be connected to an air pressure
source to provide an inlet pressure of 30 psig. A sinusoidal breathing simulator
(see 4.7.7.4) shall be connected to the regulator outlet port. The breathing
simulator shall be set to the conditions specified in Table XII and the regulator
outlet pressures shall be recorded in accordance with Figure 3. The regulator
shall be subjected to 250,000 breathing cycles or endurance testing at the
frequencies, peak flowrates and number of cycles specified in Table XII. The
regulator shall pass the requirements specified in 3.6.14.
4.8.15 Underwater. The regulator shall be connected to an air pressure
source to provide an inlet pressure of 80 psig. The regulator shall be subjected
to the water depths and flowrates (see 4.7.7.5) specified in Table VI. The
regulator shall pass the requirements specified in 3.6.15.
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