Rotary Actuators
For precise control systems
Rotary actuators serve a variety of purposes. Trim actuators, for instance, are installed in helicopters to artificially simulate the trim forces in all dimensions. Rotary actuators are, in combination with appropriate electronic control systems, also used as engine throttle actuators.
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Rotary Actuator
Trim
All trim actuators artificially simulate the trim forces in al dimensions. They consist of a damper or friction brake to provide shock- and oscillationless quick adjustment of trim position.

Rotary Actuator
Engine Trottle
The engine trottle actuator is installed in an Unmanned Aerial Vehicle (UAV). It is including a control electronic for position loop closure and performs the movement of the lever. A second motor is installed for redundancy.