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|  MIL-C-50509A(AR)
designs of gages and test equipment required to perform the
inspections listed herein shall be forwarded for approval prior to
manufacture of equipment. The noted sub-paragraphs indentify
those items and minimum inspections subject to the requirements of
this paragraph.
In establishing a cure time, dimensionally check ten (10)
NOTE 1:
parts from each cavity at periodic intervals (e.g. every 30, 60,
The curing
etc. reins) until dimensional stability is attained.
time will be from the time the part comes out of the mold until
If there is a change in
dimensional stability is attained.
material, or in the cycle time, or if a cavity is reworked, or a
new cavity is used, a new curing time shall be established and
approved.
4.5.2
Moisture content.
4.5.2.1 Delay composition. The moisture content of the delay
composition at the time and place of loading shall be determined
in accordance with Method 102.1 of MIL-STD-1234.
4.5.2.2 Black powder. The moisture content of the black
powder at the time and place of loading shall be determined in
accordance with 4.4.3 of MIL-P-223.
4.5.2.3 First
fire composition (before addition of cellulose
nitrate adhesive.
The moisture content of the first fire
composition at the
time and place of loading shall be determined
in accordance with
paragraph 4.5 of MIL-P-48240.
4.5.2.4 Illuminant composition.
The Karl Fisher method as
stated in Standard MIL-STD-1234, Method 101.2 up to paragraph 5.3
A fifty-gram sample plus or minus 0.1 gram shall
shall be used.
be added to a 500 milliliter (ml) volumetric flask containing
approximately 300 to 400 ml. methanol and 25 grams of dry sodium
nitrate. The flask shall be stoppered and the contents swirled
cautiously for several minutes until the material is thoroughly
dispersed.
The sample shall be allowed to remain in contact with
the methanol for approximately two hours. Then the 500 ml.
volumetric flask shall be filled up to the 500 ml. mark with
methanol and swirled again. A blank without the sample shall be
put through the same procedure. After the sample has settled, a
50 ml. aliquot of the clear supernatant liquid shall be withdrawn
and immediately transferred to the standard titration vessel
containing approximately 100 ml. of methanol which has just been
titrated to the preliminary end point as described in Standard
The final end point
MIL-STD-1234, Method 101.2, paragraph 5.1.
30
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