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|  MIL-F-63446B (AR)
time or one jam-up shall reject a First Article sample ANY TIME IN EXCESS OF 3 SECONDS
SHALL BE CONSIDERED A JAM-UP.
4.5.15 Fuzing No-Go Test A random sample of fuzes shall be selected from each
production lot and subjected to and pass Fuzing No-Go Test.
WARNING: This test is dangerous and all necessary safety precautions shall be taken. Test
operators shall be adequately shielded from the fuzes and their holding fixtures during arming,
application of impulse and re-safing.
Remove shear wire, if not already removed due to any previous test, prior to mounting the fuze to
the holding fixture. After mounting the fuze to the holding fixture, but prior to performing the
test the safety pin shall be removed. Removal of the safety pin shall be considered as the
beginning of the arming operation and thus safety shielding requirement applies. The fuze shall be
secured in a holding fixture in such a manner that the shock impulse that the fuze senses will not
be attenuated or magnified beyond that applied. The design of the fixture shall be such as to not
support the fuze beneath the barrier plate except in the area of the fuze seat. Arming of the fuze
is accomplished by raising of the arming pin, removal of the safety pin, and allowing the slider to
move to its fully armed position. With the fuze in the armed state, an impulse shall be applied to
the fuze/fixture in a direction parallel to the axis of the fuze within one degree. The magnitude of
the impulse shall be 180 20 gravities. Duration of the impulse shall be 1.5 .5 milliseconds.
The orientation of the fuze with respect to the impulse shall be such as to simulate a normal target
impact. The trigger shall not release the detent ball and firing pin as a result of the shock impulse.
Any fuze that functions during the No-Go test shall be classified as a critical failure and disposed
of in accordance with proper safety procedures. Fuzes that pass the No-Go test shall be resafed
by moving the slider back into its fully safe position and lowering the arming pin until it is fully
seated. The safety pin is reinserted after the slider is back in to its fully safe position. Resafing is
considered complete at the end of installation of the safety pin. Any fuze that cannot be properly
resafed shall be disposed of in accordance with proper safety procedures. Resafed No-Go fuzes
at the end of the Go test will be forced to function after remounting in holding fixture or will be
disposed of in accordance with proper safety procedures.
4.5.16 Fuzing Go Test. A random sample of fuzes shall be selected from each production
lot and subjected to the Fuzing Go Test.
WARNING: This test is dangerous and all necessary safety precautions shall be taken. Test
operators shall be adequately shielded from the fuzes and their holding fixtures during arming,
application of impulse and resafing.
The fuze shall be secured in a holding fixture in such a manner that the shock impulse that the
fuze senses will not be attenuated or magnified beyond that applied. The design of the fuze
fixture shall be as such as to not support the fuze beneath the barrier plate except in the area of
the fuze seat. Remove shear wire prior to mounting the fuze in the holding fixture. After
mounting the fuze in the holding fixture, but prior performing the test, the arming pin shall be
raised and the safety pin shall be removed. Removal of the safety pin shall be considered as
beginning of the arming operation and thus the shielding operation applies. With the fuze in the
armed state, an impulse shall be applied to the fuze/fixture in a direction parallel to the axis of the
fuze within one degree. The magnitude of the impulse shall be 700 gravities maximum. Duration
of the impulse shall be 1.0 .5 milliseconds. The orientation of the fuze with respect to the
impulse shall be such as to simulate a normal target impact The trigger shall release the detent
ball and firing pin causing initiation of the explosive train. Any fuze that fails to function shall be
considered a failure. A sum total (for all Fuzing Go Test) of three failures shall reject the
production lot. Two failures shall result in a retest (including transportation vibration, thermal
shock, helicopter vibration, and temperature conditioning) of 50 fuzes. One failure during the
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