MIL-DTL-62011E
4.6.17 Shock resistance (see 3.6.3). The pump shall be subjected to shock testing in accordance
with method 516, procedure I of MIL-STD-810 and shall meet the requirements of 3.6.3. The following
shall apply:
a.
A half-sine shock pulse of 25g shall be applied, for 18 milliseconds nominal duration,
once in the direction of each of the three major axes.
b.
The pump shall then be pressure and flow tested (see 4.6.3).
4.6.18 Vibration resistance (see 3.6.4).
a.
The pump shall be installed in the test apparatus and the entire system subjected to the
vibration test in accordance with method 201 of MIL-STD-202.
b.
If resonance is encountered during this test, the pump shall be vibrated at the resonant
frequency for a period of 6 hours along each of the three major axes, and the pump
pressure and flow rate measured.
4.6.19 Fungus resistance (see 3.6.5).
a.
The pump shall be tested in accordance with class 1, method B of ASTM G21, except
that incubation shall be for a single period of 90 days.
b.
The pump shall be pressure and flow tested (see 4.6.3).
4.6.20 Fuel resistance (see 3.6.6).
a.
Any pump using elastomeric parts that come in contact with fuel shall be subjected to fuel
resistance testing.
b.
The test shall be as specified in table V.
c.
The pump shall be mounted in the test apparatus and operated for 2 hours per day,
except for the first 48 hours of phase I and phase III.
d.
The pump shall be pressure and flow tested (see 4.6.3).
TABLE V. Fuel resistance test schedule.
Phase
Hours
Medium 1/
Temperature
75±5 °F (24±3°C)
I
Soak
168
ASTM Reference Fuel B
155±5 °F (68±3°C)
II
Dry
4
Air
75±5 °F (24±3°C)
III
Soak
168
ASTM Reference Fuel B
IV
Dry
4
Air
155±5 °F (68±3°C)
1/ ASTM Reference Fuel B as specified in ASTM D471.
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