MIL-DTL-70526B (AR)
4.4 Testing.
4.4.1 Total volatiles. For verification, a sample of delay,
igniter and flash composition from each regular production shift
or fraction thereof and from each new container shall be
selected to perform a total volatiles analysis. If any sample
fails to meet the requirements of 3.4, the production
represented by the sample (or the new container of material)
shall be rejected. The sample shall be tested in accordance
with Method 102.1 of MIL-STD-1234.
4.4.2 Determination of average particle size.
4.4.2.1 Molybdenum trioxide. A sample shall be selected
from each lot of molybdenum trioxide and tested in accordance
with Method 202.1 of MIL-STD-1234. If the sample fails to meet
the requirements of Drawing 12926809 for particle size, the lot
shall be rejected.
4.4.2.2 Chromium oxide. A sample shall be selected from
each lot of chromium oxide and tested in accordance with Method
202.1 of MIL-STD-1234. If the sample fails to meet the
requirements of Drawing 12926809 for particle size, the lot
shall be rejected.
4.4.3 Vinyl Alcohol Acetate Resin (VAAR) solids
determination. The concentration of solids in VAAR solution may
change during storage due to evaporation of solvent. VAAR solids
content in the delay blend can only be obtained if the solution
to solids weight ratio is known prior to mixing. Prior to
blending the delay composition, a sample of VAAR solution shall
be tested to determine this ratio. The sample shall be tested in
accordance with and meet the requirements of MIL-V-50433. Should
the solids content be too high, additional solvent may be added,
with agitation, until the solids content is acceptable. The VAAR
solution shall then be retested to assure compliance with MIL-V-
50433.
4.4.4 Crimp strength. At the beginning of each production
shift or portion thereof, an inert delay housing shall be crimped
on each crimping device using the same technique as in regular
production. After crimping, the delay housing shall be sectioned
perpendicular to the longitudinal axis and the load applied
axially to crimp from the sectioned end. A tool manufactured to
the same diameter as the delay column bore, minimum, shall be
used in applying load to the crimp. If the crimp fails to meet
the load requirements of 3.5, the crimping device shall be
adjusted until the requirements are met. (See 6.10)
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