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Projectile, 155MM, HE, M692 and M731 Housing, Timing and Fuzing
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Functioning of electronic circuitry



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MIL-P-48189D(AR)
3.2.1 The definition of "damaged" with respect to the shorting
bar shall be that the shorting bar shall not be cracked or broken.
Bent, nicked, scratched, or otherwise questionable units shall be
verified for continity either by electrical test or by radiographic
inspection.  If the unit is found to be continuous by these tests,
the unit shall be considered acceptable for Special b of Paragraph
4.4.2.23.  Units deemed questionable but acceptable to Special b. of
Paragraph 4.4.2.23 shall be evaluated per Minor 208 of Paragraph
4.4.2.23.
3.3 S&A assembly.
3.3.1 Presence of sliders and springs in S&A assembly.  The S&A
assembly shall have the long and short sliders, and the long and
short slider springs, present and properly positioned.
3.3.2  Qualification test of electric detonator and lead cup
assembly lots. The electric detonator serial lot and lead cup
assembly serial lot to be used in the housing lot (see 4.4.1) shall
perform satisfactorily as evidenced by high order functioning of the
lead cup assembly when subjected to the qualification test specified
in 4.5.6.
3.4 Function of sensor assembly.
9298569).
( Dwg.
3.4.1 Non-release.  The Sensor Assembly, less breakwire
retaining ring, cover and sealants, when subjected to an
acceleration of 9000 g's minimum, in the direction of deployment,
shall not release when tested in accordance with 4.5.7.1.
3.4,2 Release.  The Sensor Assembly when subjected to a
pressure of 250 + 25 psig for 1 second maximum while at a
temperature of 75 10F shall release the ejection spring,
sleeve, cap and bobbin with the thread remaining unbroken and
attached to the bobbin and post and with the breakwire maintaining
continuity when tested as specified in 4.5.7.2.
3.4.3 Tripline deployment.  When the Sensor Assembly functions
in 3.4.2, the tripline shall deploy a minimum of 16 feet when tested
in accordance with 4.5.7.3.
3.4.4 Breakwire function.  When the pressure is released and
the line pull ed, the breakwire shall break at a force of 140 grams,
minimum, and 500 grams, maximum, when tested in accordance with
4.5.7.4.
3.4.5 Post retention and thread breaking strength.  Following
the breakwire function, the post must be retained within the sensor
case and the thread must not break when a 540 gram minimum
dislodging force is applied in accordance with 4.5.7.5.
4

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