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|  MIL-F-20420J(AR)
4.5.6 Candlepower test. The flare assemblies shall be
supported in a suitable fixture with the ignition end up, and fired
by removing the pull pin. The candlepower determination shall be
made in accordance with the procedures and equipment specified on
dwgs. 9201268, 9201390 and 9201136 using the average candella
reading taken during a consecutive burning time period of fifty-five
(55) seconds, min. (Destructive Test)
4.5.7 Safety clip assembly spring test. The safety clip
assembly shall be placed on the test gage and allowed to remain
there for the required time. At the end of the test period, the
clip assembly shall be removed from the test gage and the distance
between the ends checked for compliance with the dwg. requirement.
The equipment used for this test shall be as specified in 4.4.4.
(Non-Destructive Test )
4.5.8 Torque test of spring. The springs shall be distorted
the required amounts and the distortion forces recorded for
compliance with the dwg. requirements. The test equipment used
shall be as specified in 4.4.4. Springs subjected to these tests
shall not be returned to tune lot.
(Destructive Test)
4.5.9 Determination of composition
4.5.9.1 Intermediate charge and first composition.
In lieu of
making an analysis of each batch of intermediate charge or first
fire composition, as applicable, a batch record shall be prepared
for each batch produced for production use. This batch record shall
be used to demonstrate the actual amounts of each ingredient used to
make the batch as specified on the applicable drawing. In addition
to recording composition of the batch, the batch record shall also
be used to record and control curing time for mixtures as necessary
prior to loading. A batch of composition shall be the amount of
composition used during a single work shift by a single employee or
crew. The batch may contain one or more mixes. When more than one
mix is used in a batch, the exact proportion of ingredients shall be
measured into each mix.
4.5.9.2 Illuminant and ignition composition. The illuminant
and ignition composition shall be analyzed as follows to determine
compliance with applicable drawing requirements.
Preparation of standard. Using stock magnesium solution prepare
the standard using the following procedure: Weight accurately 1.0
gram of high purity magnesium to the nearest .0001 gram and dissolve
in a minimum volume of nitric acid duluted one to one with distilled
water. Cool and dilute to one liter.
(One milliliter of solution
equals 1,000 micrograms of magnesium.)
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