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Page Title:
Felt, fiberboard, cork, wood, paper products and parachute cloth |
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|  MIL-S-13303G(AR)
At the end of the 2 hour drying period, remove the dish from the
heat, replace the cover, and cool to room temperature in a
desiccator. After cooling, accurately weigh the dish, cover, and
contents. The loss in weight shall be calculated as the percent of
moisture using the following method:
Percent moisture
where:
A = weight of dish, cover and contents before drying.
B = weight of dish, cover and contents after drying.
c = weight of sample before drying.
4.5.1.4 Felt, fiberboard, cork, wood, paper products and
parachute cloth. An accurately weighed portion of at least 10 g. of
each material (weighed to the nearest milligram) shall be
transferred to a tared weighing dish and placed in an oven and
heated at a temperature of 100 5C for 2 hours. The dish and
contents shall be removed from the oven and placed in a desiccator,
cooled and weighed. The difference in weight shall be calculated to
percentage of moisture in the sample.
4.5.2 Functioning. The following functioning tests shall be
performed as specified below.
4.5.2.1 Hot tempe rature (160 5F). The packed signals
shall be conditioned for a min. of 16 hours at a temperature of 160
5F. The packed signal shall be taken from the conditioning
chamber, removed from the metal container and fired vertically from
a suitable fixture before the temperature of the signal is allowed
to change. The performance of the signal shall be observed for
compliance with the requirements.
4.5.2.2 Ambient 70 5F. The signal packed in a sealed
container shall be conditioned for a minimum of 16 hours at +70
5F. After conditioning, the signal shall be removed from the
container and fired from a suitable fixture before the signal
temperature changes. The functioning performance shall be observed
for compliance with the requirements.
4.5.2.3 Cold temperature (Minus 65 5F).
4.5.2.3.1 Fixture fired. The packed signals shall be
conditioned for a min. of 16 hours at a temperature of -65 5F.
The packed signal shall be taken from the conditioning chamber,
removed from the metal container and fired vertically from a
suitable fixture before the temperature of the signal is allowed to
change. The performance of the signal shall be observed for
compliance with the requirements.
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