Woodward ProAct III, Инструкция по установке и эксплуатации

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Manual 04127 ProAct III/IV Actuator/Driver
Woodward 13
Figure 3-3. Example of Actuator Bracket
[When mounting on the bottom of the actuator, torque the attaching bolts to 17 to 18 N
x
m
(150 to 160 lb-in).]
Linkage
Proper design and installation of the linkage from the actuator to the engine is
necessary if the unit is to give good control. Do not remove the inertia disk from
the output shaft. It is necessary to achieve steady-state control with low external
inertia loads.
Make sure that the actuator has ample work capacity to control the fuel supply
under maximum load conditions.
Manually stroke the fuel-control linkage from stop to stop as if the actuator were
moving it. The linkage must move freely, without friction, and without backlash.
Lubricate or replace worn linkage or fuel control parts as required.
A light loading spring to minimum fuel is included in the actuator. A positive
shutdown is necessary in the event of a loss of power to the actuator/driver.
The actuator's maximum slew rate can place stress on fuel system
stops and on the linkage between the actuator and the fuel system.
Maximum actuator speed is 900 degrees per second in both the
increase and decrease fuel directions. The ProAct III actuator's Mass
Moment of Inertia (MMOI) is 0.027 in-lb-sec². The ProAct IV actuator's
MMOI is 0.058 in-lb-sec². The fuel system stops must be adequate to
absorb this MMOI plus the inertia of the linkage without damage.