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There are several types of linear actuators. The main three types are Pneumatic, Lead Screw Driven, and Hydraulic Linear actuators. In addition there are also solenoids and stuff but the three main types are used in heavy mechanical applications. The one in the picture looks like a Hydraulic Linear actuator. The way hydraulics work is that the pressurized ...


Side stick or no, once airborne, you never touch the rudder pedals in any airliner when flying except during landing where independent rudder inputs are used to keep the airplane lined up during the flare. The yaw damper takes care of rudder coordination for normal flying; that is, in addition to controlling yaw excursions, it compensates for adverse yaw ...


The rudder pedals are not usually used in flight, even with the autopilot off. The rudder on the Airbus A320 can be controlled via a mechanical connection to the rudder pedals in the flight deck, but also electrically via the fly-by-wire mechanism. The following graphic shows an overview of the rudder control: (Airbus A320 FCOM - Flight Controls - ...


Sidestick input does NOT control both the yaw and roll axes. Pilots of sidestick aircraft still use the rudder pedals to control yaw and they use the sidestick for roll. This allows them to perform crosswind landings and sideslips in addition to coordinated turns.


If you want to include radio-controlled model airplanes as "aircraft", then the answer is that yes, there have been some single-stick transmitters that use twisting of the stick to control the rudder channel.

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