MIL-DTL-45500E
wise specified herein, the steady state rate of fire shall be
calculated using the last fifty percent of the burst excluding
stopping time. Ammunition used for the function firing shall be
Government Standard 20mm, M55A2 cartridges and 20mm, M51 series
or PGU-39/B dummy cartridges. Testing shall be as specified in
4.5.3.3
3.4.4.1 Clearing. The gun shall be capable of being
cleared when the clearing sector is manually pivoted into the
main cam and the rotor assembly is manually turned by hand to
load and clear a minimum of five rounds of Government Standard
20mm, M51 series or PGU-39/B dummy cartridges.
3.4.5 Targeting and accuracy. Using Government standard
20mm, M55A2 cartridges, the targeting and accuracy requirements
shall be as specified in the applicable specification sheet.
Testing shall be as specified in 4.5.3.3.
3.4.6 Endurance. Requirement for endurance testing shall
be as specified in the contract (see 6.2). Guns shall be capable
of withstanding the firing of 25,000 or 30,000 rounds, (as
specified in the applicable specification sheet), of Government
standard 20mm, M55A2 cartridges, with no misfires exceeding 0.5
percent of each series attributable to the gun, and not more than
a total of three malfunctions for the entire test. In addition,
the gun shall meet the performance requirements of Table I as
specified in the applicable specification sheet. The schedule
for maintenance and replacement parts during the endurance
firing shall be in accordance with the applicable specification
sheet. Testing shall be as specified in 4.5.3.4.
3.5
Deleted.
3.6 Interchangeability. Requirement for interchangeability
testing shall be as specified in the contract (see 6.2). Unless
otherwise specified on the drawings, all parts shall be
interchangeable. Testing shall be as specified in 4.5.3.5.
3.7 Bolts, screws and fasteners. Bolts and screws shall be
torqued, lock wired and secured to the requirements specified on
applicable drawings. Threaded fasteners shall be torqued
sufficiently to prevent relative movement between mating
components.
3.8 Lubrication. Parts and assemblies shall be lubricated
with material specified on the applicable drawings. The amount
of lubrication used shall be such that the electrical contacts
and circuits will not be affected.
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