MIL-DTL-18714F (OS)
4.6.5.3.2 Light detectors. The light detectors shall respond to light of wavelength 0.7-1.0 micrometers
within a range of 9 mW/cm2. The light detector shall respond to the bright light of the primer output within 10
microseconds producing a greater than 0.5 volt swing. The light detector unit shall be capable of withstanding
the shock and blast of at least 130 shots before major repairs. The recommended unit is a combination of light
detector and amplifier built into a three wire IC such as a TSL 254 or TSL 254R, Precision High Speed Light
to Voltage Converter by Texas Advanced Optoelectronic Solutions. It produces a 3.5-volt swing for
1mW/cm2 of light in the wavelength of 0.3-1.1 micrometers. A dark film or lens in front of the detector may
be used to attenuate the light signal and provide a more stable data signal.
4.6.5.4 Marginality of success inspection.
4.6.5.4.1 Post firing, primers shall be visually inspected to assure compliance with the requirements of
3.7 c and 3.7 d.
4.6.5.4.2 Post firing, primers shall be disassembled and inspected to assure compliance with the
requirements of 3.7 d.
4.6.6 Vibration. The primer shall be subjected to the transportation vibration test of MIL-STD-331, Test
B1, section 6.1.2, table B1-4, except that the orientation of each primer during this three-phase test shall be as
follows:
a.
Phase I: Primer axis horizontal;
b.
Phase II: Primer axis vertical, primer stock down;
c.
Phase III: Primer axis vertical, primer stock up.
In order to determine the integrity of the primer after vibration, the primer shall be marked with a line in the
axial direction at the junction of the primer stock and primer tube indexing their initial relative positions. The
primer shall be rigidly mounted to the vibration table at the primer stock. After vibration, the primer shall be
subjected to the tests of 4.6.4 and 4.6.5.
4.6.7 Ballistics. The primer shall be assembled into a 5"/54 caliber full service propelling charge assembly
in accordance with drawing 3208375. All components shall be from service acceptable lots. The propellant
shall be conditioned at 90 ± 15F for 24 hours minimum prior to assembly of the propelling charge. All other
components shall be conditioned at 85 ± 20F for 24 hours minimum prior to assembly of the propelling
charge. The assembled propelling charge shall be conditioned at 90 ± 5F for 48 hours minimum. After
removal from the conditioning chamber, the assembled propelling charge shall be fired within 10 minutes.
Serviceable blind, loaded, and plugged projectiles shall be used. The rounds shall be loaded into a 5"/54 or
5"/62 gun using the gun's automatic handling and ramming system, then fired using the gun's electrical firing
system. Projectile ejection time shall be recorded.
4.6.8 Inspection of packaging. The packaging, packing, and marking shall be examined for conformance
with the technical data package.
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