MIL-PRF-62361E
4.5 Performance tests.
4.5.1 Rotation of output shaft. To determine conformance to 3.3.1.1, with the motor
energized at operating voltage, the motor output shaft shall be observed to rotate CCW when
viewed from the shaft end, with positive voltage applied to the positive terminal of the filter and
negative voltage applied to the negative terminal of the filter. Lead polarity shall be reversed to
verify CW shaft rotation.
4.5.2 Speed and current. To determine conformance to 3.3.1.2, type I and type II motors
shall be energized at operating voltage. The current required to start the motor shall be measured
by an oscilloscope. The starting current shall be checked. The loading shall be adjusted to not
less than rated torque, and the resultant speed and current measured for both directions of
rotation. The running current shall be checked.
4.5.3 Type III speed. To determine conformance to 3.3.1.2.1, a voltage of
18 +0.5/-0.0 V dc and maximum current limited to 300 mA shall be applied to the motor. It shall
be verified that motor shaft speed is 6 +5/-3 rpm for no load and for an increasing load up to
1.13 N-m of torque for CW and CCW rotations.
4.5.4 Type III starting current. To determine conformance with 3.3.1.2.2, it shall be
verified that the motor shall start with a current that does not exceed 700 mA with 1.13 N-m of
torque applied for CW and CCW rotations. Compliance with the electrical time constant shall be
verified by analysis.
4.5.5 Type III average stall torque. To determine conformance with 3.3.1.2.3, the motor
shall be supplied with 300 mA current. It shall be verified that the average stall torque derived
from 15 individual stall events is between 1.13 N-m and 2.26 N-m and that any individual stall
torque measured is greater than .74 N-m and less than 3.05 N-m, for CW and CCW rotation.
4.5.6 Driving and slipping torque. To determine conformance to 3.3.1.3, the motor shall
be energized at rated voltage. The loading device shall be adjusted up to the driving torque and
the output shaft of type I and type II observed for slippage. The load on the shaft shall be
increased to above the driving torque. The output shaft shall stop at a value between the driving
torque and slipping torque. The load shall be removed from the shaft and reapplied at not more
than the driving torque, and the output shaft shall be observed for no slippage. The above shall
be repeated in the opposite direction of rotation.
4.5.7 Operating voltage. To determine conformance to 3.3.1.4, the type I and type II
motors shall be tested according to 4.5.2, 4.5.6, and 4.5.9 with 18 V dc applied, and again with
30 V dc applied.
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