MIL-DTL-85760A(OS)
4.3.1 Sample size. Twenty-four igniters shall be submitted for first article inspection.
4.3.2 Inspection routine. The igniters shall undergo the tests specified in Table II in the exact sequence
shown.
4.3.3 Test and treatment.
4.3.3.1 Transportation vibration. The igniters shall be subjected to a composite version of MIL-STD-810,
Method 514.5, Procedure I, Category 4, Truck Transportation over U.S. Highways, for 3 hours per axis for a
total of 9 hours. The composite transportation vibration profile is provided in Figure 1. Each igniter shall be
in its shipping configuration for the test. The igniters shall be temperature conditioned to the temperatures
specified in Table II for 8 to 9 hours prior to test and maintained at the temperature specified in Table II for
the duration of the test.
1
0.1
0.01
PSD (g2/Hz)
0.001
0.0001
1
10
100
1000
FREQUENCY (Hz)
Breakpoints
Frequency (Hz)
10
40
120
121
200
240
250
500
PSD Value (g2/Hz)
0.01500
0.01500
0.002000 0.00300
0.00300
0.00150 0.00050
0.00015
FIGURE 1. Transportation vibration profile for vertical, longitudinal and transverse axes.
4.3.3.2 Temperature and humidity. Igniters shall be subjected to the temperature and humidity test of
MIL-STD-331, Test 105.1, except that the temperature extremes shall be ! 40°F and +140°F and only one
14-day cycle shall be performed. The igniter shall be tested bare.
4.3.3.3 Drop test. The igniters shall be dropped from 2 feet, measured from the lowest point on the igniter to
the impact surface. The impact surface shall be a 2-inch thick steel plate (Brinell hardness of not less than
207) embedded in not less than of 2 feet of reinforced concrete. Two igniters shall be temperature
conditioned and maintained at ! 40EF and two at 140EF. Of these, two (one from each temperature) shall be
dropped on the bottom surface of the igniter plug and two (one from each temperature) dropped on the flange
of the igniter case.
4.3.4 Failures. Failure of any igniter to pass the first article tests shall be cause for first article rejection.
4.4 Lot acceptance test. Lot acceptance test shall consist of the tests specified in Table III (see 6.2.2).
4.4.1 Inspection lot. An inspection lot shall consist of an igniter lot with no more than one lot of
magnesium-fluorocarbon and one lot of initiators.
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