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|  MIL-D-63516(AR)
4.5.6 Performance characteristics. The gun drive assembly shall be
tested for compliance with the specification requirements of acceleration,
steady-state operation, and maximum torque. Any assembly which fails to
comply with the specified performance characteristic requirements or evidences
degradation of its operational performance shall be classed defective. Test
equipment and procedures shall be satisfactory to the contracting officer.
(See 4.4.4)
4.5.6.1 Environmental characteristics (first article inspection only).
4.5.6.1.1 Temperature-altitude. Drive assemblies shall be subjected to
the temperature altitude test specified in MIL-STD-81O to determine compliance
with the applicable specification requirements. The drive assemblies shall be
function tested for compliance with the applicable specification requirements
of acceleration, steady-state operation and maximun torque when the
requirements specify that the system shall be operated.
4.5.6.1.2 Vibration test. Drive assemblies shall be vibration tested for
compliance with the applicable specification requirement for 400 duty cycles
without load. While operating as specified, the drive motor shall be vibrated
at 80 Hz with a resultant magnitude and direction derived from a .15 inch
total displacement parallel to the drive rotor axis and .40 inch total
displacement perpendicular to the drive rotor axis. After completion of the
400 duty cycles, the drive assembly (motor stopped) shall be vibrated at 80 Hz
and .40 inch total displacement parallel to the drive rotor axis for one
hour. Drive assemblies shall be mounted to a vibration table using the
mounting techniques specified in MIL-STD-810, Method 514.1. The general
requirements of MIL-STD-81O shall apply as applicable. Pre-test and
after-test performance data shall be determined by function testing as
specified in the applicable specification requirements of acceleration,
steady-state operation, and maximum torque. Any drive assembly which fails to
comply with the specified functioning test shall be classed defective.
4.5.6.2 Proof test (first article inspection only). Five (5) gun drive
assemblies shall be forwarded to the cite specified by the contracting agency
and assembled to an accepted Universal Turret Subsystem (UTS). The gun drive
assembly shall function in accordance to the intent of the design and with no
evidence of malfunction.
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