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|  MIL-A-23282B(Wep)
3.3.5 Backlash
3.3.5.1 Output arm. The backlash of the output arm shall
not exceed 0 degrees, 30 minutes, with the input pulley held
stationary, when tested as in 4.5.4.5.
3.3.5.2 Potentiometer shaft. The backlash of the poten-
tiometer shaft shall not exceed 0 degrees, 30 minutes.
3.3.6 Output direction
3.3.6.1 Clockwise. The actuator output arm shall move
clockwise (cw) (viewed facing the output shaft) when the
input pulley is driven cw (viewed facing the pulley) and a
current of 7 plus or minus 2 milliamperes (ma) dc flows
between terminals 1 and 2 of connector P40 (BUWEPS Drawing
694739), energizing the aft magnetic particle clutch coil.
Test as in 4.5.4.6.1.
3.3.6.2 Counterclockwise. The actuator arm shall move
counterclockwise (ccw) when the input pulley is driven cw
and a current of 7 plus or minus 2 ma dc flows between ter-
minals 2 and 3 of P40 (BUWEPS Drawing 694739), energizing
the forward magnetic particle clutch coil. Test as in
4.5.4.6.2.
3.3.7 Input speed. The actuator shall be capable of
meeting the requirements of 3.3.8 and 3.3.9 with input
pulley speeds of 1000 to 6500 rpm, when tested as in 4.5.4.7,
4.5.4.8, 4.5.4.9, 4.5.4.10, and 4.5.4.11.
3.3.8
Output torque
3.3.8.1 The actuator shall produce an output torque of
190 plus or minus 60 pounds-inches when either magnetic
particle clutch is energized with a control current of 12.5
plus or minus 0.5 ma.
3.3.8.2 Balanced current operation. When control current
is applied to both coils so that the sum of the currents is
11 plus or minus 2.5 ma and the individual currents are equal
within 0.25 ma, the average torque at the output arm, in
either direction, shall not exceed 15 pounds-inches. Torque
shall not exceed 20 pounds-inches at any time. The foregoing
requirement is for the condition in which the "balanced
current" described above is obtained by increasing the current
10
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