Definition
A control feature on a helicopter cyclic stick that, when pressed, releases or neutralizes the cyclic's force trim or friction system, allowing the pilot to reposition the cyclic and re-establish a new neutral (centered) reference point without fighting the trim forces.
Plain English
A button on the cyclic stick the pilot presses to reset where 'centered' is. It lets the pilot move the stick freely to a new resting position without the trim system pulling it back to the old one.
Context Anchor
Seen in helicopter instrument flying, especially when adjusting control feel during attitude changes, climbs, descents, or cruise.
Derivation
Cyclic' comes from Greek kyklos (circle), referring to the way this control changes the rotor blade pitch cyclically as the rotor turns. 'Centering' simply means returning to a center point. Together: the button used to re-center the cyclic.
Why Pilots Care
Enables quick, precise attitude stabilization without fighting control forces during instrument procedures.
Grounding Statement
Pressing the button lets the pilot move the cyclic freely; releasing it tells the system, “make this the new comfortable control position.”
Intuition Check
Centering does not necessarily mean moving the cyclic to the physical middle of its travel. Here, it means resetting the position where the cyclic feels balanced for the flight condition.
Example Sentence 1
After establishing a climb, the pilot pressed the cyclic centering button and eased the stick aft to set a new trim position for the climb attitude.
Example Sentence 2
In turbulence the cyclic centering button helped restore neutral trim without large control movements.