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Page Title:
Table I. Design practice documents. |
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|  MIL-I-85889(AS)
3.2.1.12 Autoignition temperature. The autoignition temperature of the igniter assembly shall be no less than
300F.
3.2.1.13 Continuity measurement. The igniter design shall incorporate a means for verifying continuity of the
ignition circuit with low current ohmmeters (50 milliamperes maximum) typical of ordnance operations when the
igniter is in its operational condition (see 6.3.1.2).
3.2.1.14 Service lite. The igniter shall be designed to have a service life of not less than 10 years. In selecting
design options, the contractor shall consider all expected life cycle environments (see 4.2.2.1).
3.2.1.15 Reliability. Selection of materials and design practices employed by the contractor shall promote high
ignition reliability (see 4.4.6).
3.2.1.15.1 Design goal. As a design goal, the probability of the igniter meeting the performance requirements
specified herein, during its service' life, shall be not less than 0.99.
3.2.1.15.2 Phase III reliability. Demonstrated reliability during Phase Ill shall not be less than 0.90 with a
confidence of 90 percent.
3.2.1.16 Maintenance-free design. The igniter shall be designed such that it requires no maintenance during
its service life To ensure a maintenance-free design, the contractor shall consider all expected life cycle environments
(see 4.2.2.1).
3.2.1.17 Lettering color. Lettering color shall be in accordance with NAVAIR 11-1-117.
3.2.1.18 Igniter labeling data. The igniter shall be labeled with identification data in accordance with Method
III or IV, Type 4 of MIL-H-8112. As a minimum, the igniter shall be labeled with the following identification data:
a . Nomenclature and MK/MOD number
b . Drawing number and revision letter
c . Department of Transportation Classification
d . Manufacturer's name
e . Date of ignition material manufacture
f . Lot number
g . Serial number
h . Special handling instructions and warnings
3.2.2 Design practices.
3.2.2.1 Design guidelines. The documents of table I shall be used for engineering design of the igniter. Design
prctices employed by the contractor shall promote lightweight construction, simplicity of design, proper operation,
and economy of manufacture.
Table I. Design practice documents.
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