SEP and MEP driver here...
Trying to read up on power steering systems.
Am I right in saying that if you release the tiller the selector valve will provide a by-pass of fluid between the two steering jacks, making the nose gear free to castor? Is this something you can feel in the tiller that it is spring-loaded towards center (or zero deflection) e.g. when you taxi? While as soon as you turn the tiller left or right the selector valve will direct hydraulic pressure to the correct side of the steering jacks and drain the other side?
For towing, does it work to just leave the tiller in neutral or is there any other way you do it? If you tow the aircraft will the tiller move in response to the nose gear?
Hope I didn't confuse you too much.. thanks in advance for any help!
Schematic pictures is very much appreciated as well!