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Environmental and destructive testing. |
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|  MIL-F-50532A(MI)
4.3.3.2,7 Environmental and destructive testing. A sample of 60
fuzes shall be selected from each lot and subjected to the following
testing in the sequence listed.
*
4.3.3.2.7.1 Jolt and Jumble (see 3.9) - Critical defects -
functioning and arming - Code No. 16012; and missing pl ate screws
{see 3.9) - Major defect - Code No. 16007. Ten of the 60 fuzes
selected in 4.3.3.2.7 shall be assembled into closures or simulated
closures. The assembly shall then be subjected to the jolt test
specified in MIL-STD-331, Test 101 and then without disassembly to
the jumble test specified in MIL-STD-331, Test 102. The lot shall be
rejected if, after disassembly, one or more fuzes have functioned or
if one or more fuzes are armed or unsafe to handle, or if two or more
plate screws have become completely disengaged.
*
4.3.3.2.7.2 Rough handling (see 3.10). The remaining 50 fuzes shall
be subjected to the transportation vibration test and then without
disassembly to the five-foot drop test specified in 3.10.
*
4. 3.3.2.7.2.1 Arming tests: These tests shall be performed on thirty (30)
of the fifty (50) fuzes only. The cover assembly, graze elements and base
plug components shall be removed, but the graze elements (firing pin and
firing pin spring) identified for later re-insertion into the same fuze;
and the fuzes shall be subjected to the following tests in the sequence
specified using test equipment specified in 4.3.4.
TEST PROCEDURE
TEST
4.4.8
Non-functioning of setback assembly
Functioning time of setback assembly
4.4.8
4.4.9
Rotor arming time at plus 70 degrees F
4.4.9
Rotor arming time at minus 40 degrees F
The temperature tolerance adhered to during performance of the rotor arming
time test at plus 70 degrees F and minus 40 degrees F shall be plus and minus
5 degrees F.
The lot shall be rejected if one or more defective are found according to the
defects listed in Table I (see 4.3.3.1.7.2.1). The results may be examined
and tested for outliers but only one outlier is allowed and only for the
minus 40 degree F temperature. Refer to 6.6 and 6.7 for calculations of
sample standard deviation (sigma) and outliers respectively. After completion
of testing (see 4.4.9), the cover assemblies, graze elements and base plugs
shall be reassembled to the fuze and the fuzes tested as follows in
4,3.3.2.7.2.2.
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