MIL-DTL-23659F
APPENDIX A
measurement as described in paragraph A.6.4. For a DILI, the confinement shall be consistent
with the intended application, with confinement of the input and output ends designed to
simulate the operational application. If the confinement in an application has not been
evaluated, then an additional 5 units shall be tested once the design configuration is known.
The radially confined ILI shall be mechanically anchored to prevent movement should a
reaction occur. In the event of ILI case deformation, rupture or venting; additional system level
testing may be required by the safety authority to determine if propagation to the next in-line
energetic component will occur. During the AC test, the input voltage shall be switched on
either mechanically or electronically, and the onset of voltage shall be controlled. Means of
switching power shall be capable of a maximum rise time of 1 microsecond to full voltage, with
the rise time occurring while the amplitude of the applied voltage is within 10 percent of the
peak value. The reaction of each ILI shall be documented. Video or high speed optical
recordings shall be used, along, with the output measurement, to capture response
characteristics. The switching characteristics of the voltage waveform shall be captured
documenting the turn-on time, turn-on voltage and current waveforms for a minimum of the
first 200 milliseconds after turn-on.
A.6.7.2. DC Test. The input to the ILI shall be energized from a DC source at a minimum
of 28 volts; the power source must be capable of sustaining a minimum short circuit current of
10 amperes. The open circuit voltage of the source shall be adjusted to within 5 percent of the
required value. Each ILI used for this test shall be temperature conditioned at +23 C ± 10 C.
Five ILI shall be exposed to the 28 volts DC for five minutes. The ILI shall be confined as
described in A.6.4. For the test, the input voltage shall be switched on either mechanically or
electronically, and the onset of voltage shall be controlled in the following manner. The means
of switching power shall have a maximum rise time of 1 microsecond, to full voltage. The
reaction of each ILI shall be documented. Video, or high speed optical, recordings shall be
used along with the output measurement to capture response characteristics.
A.6.8. Maximum Allowable Electrical Sensitivity. To determine the electrical sensitivity, the
ILI shall be energized from the firing unit of paragraph A.5.3. The firing capacitor voltage shall
be varied according to the requirements of the statistical test used. In each case, the voltage shall
be adjusted to the required value and measured with an accuracy of at least 1 percent. The ILI
used for this test shall be tested at ambient temperature in accordance with A.6.2.
A.6.9. 1.5 Meter Drops. Test the ILI by dropping them in random orientations 1.5 meters in
accordance with MIL-STD-331, test A4.1.
A.6.10. Electrostatic Discharge. Test the ILI pin to pin and pin to case including polarity
reversal in accordance with MIL-STD-331, test F1 for Personnel-borne ESD. The Personnel-
borne ESD testing of the ILI shall use the 500 and 5000 ohm resistor in series with the ILI. The
5000 ohm resistor in series testing is not required for pin to pin tests.
A.6.11. Vibration. ILI shall be tested in accordance with MIL-STD-331, Test B3, using the
level of Table B3-1 for general use fuzes. Each ILI shall be temperature conditioned at cold,
ambient, and hot temperatures during vibration exposure so that every ILI experiences each
temperature while being vibrated in each orientation. Cold temperature shall be a maximum of -
54 C (-65°F), ambient temperature shall be +23 ± 10 C (+73 ± 18°F), and hot temperature shall
be a minimum of +71 C (+160°F).
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