Rudder-aileron Interconnect Spring Proportionality Constant

It is the spring constant for the spring that interconnects aileron to rudder. The interconnect spring causes a change in rudder hingemoment with a change in aileron deflection.

One of the purposes of the rudder-aileron interconnect spring is to compensate for excessive aileron yaw and insufficient dihedral effect.

The spring constant is uniquely determined from the aircraft control system.