MIL-DTL-23659F
APPENDIX A
A.6.12. Shock. The ILI shall be mounted in a suitable test fixture simulating the expected
mounting of the device and tested in accordance with the shock test in accordance with MIL-
STD-202. The shock pulse shall be a half sine pulse. The amplitude of each shock pulse shall
exceed 2000 Gs and have a minimum duration of 0.5 milliseconds.
A.6.13. All-Fire Performance. Prior to firing, the ILI shall be temperature conditioned and
maintained at the required temperature for 12 hours, or until the temperature stabilizes at the
desired level as specified in A.6.2, whichever is shorter. If the ILI cannot be test fired within the
temperature chamber, a test protocol shall be established that guarantees the ILI is at the desired
temperature. The conditioning temperature, duration out of the chamber, and logic used for this
testing protocol shall be documented. Whenever it is necessary to repeat cold temperature
conditioning of a cold device, all condensation shall be removed from the device before it is
returned to the temperature-conditioning chamber. Effort shall be made to assure that the ILI
meets the temperature requirements at the moment it is functioned. The ILI shall be fired from
the firing unit of A.5.1. The output shall be measured and shall conform to the ILI acceptance
criteria.
A.6.14. High Firing Voltage. The ILI shall be fired from the firing unit described in A.5.1
charged to the limits of the firing system, or to 150% of the maximum intended-use firing
voltage, which ever is less. The output shall be measured and shall conform to the ILI
acceptance criteria.
A.6.15. Post Fire Pressure Seal Integrity Test. This test requires that ILI that have integral
seals that must survive following initiation to prevent venting from a pressure vessel, such as a
rocket motor, be tested to the design requirements as specified by the manufacturer or the
specific system requirements. Failure to maintain a seal shall be noted, a safety assessment
generated, and presented to the appropriate safety authority.
A.7. RELATED INFORMATION
A.7.1. General. This section contains information, for guidance only, of a general
explanatory nature that may be useful but is not mandatory. Some of the material in the notes is
to assist in understanding the basis for the requirements.
A.7.2. Intended Use. This specification is intended to prescribe tests and test procedures for
the evaluation of ILI by subjecting them to characterization, environmental, and functional tests
to establish basic electrical and functional performance of the ILI.
A.7.3. Test Documentation. It is always advisable to generate test plans, performance
records, equipment, conditions, results, and analyses when conducting any certification. A
detailed certification test plan should be developed and approved by the appropriate safety
authority prior to starting the certification tests. The detailed certification test plan should
provide descriptions of the following: visual inspections and examinations, fireset, test fixtures,
the test firing circuit, and special test equipment that will be used in conducting each test. A
detailed test report should be provided to the appropriate safety authority at the completion of the
certification testing. At a minimum this report should include the test data, inspection results,
diagnostic records, and explanation of anomalous results.
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