I think you should revisit that explanation
So the collective pitch automatically increases as a result of increased torque: what sort of helicopter are you talking about?
Squeaks,
The specific Torque-Pitch Coupling does not exist in current helicopters. It is an innovation that is intended to simplify the pilot's control of very light recreational helicopters. The micro-light Electrotor project is an ideal testbed for implementing and playing with this idea; due to its low cost, the incorporation of other ideas, and the ability to initially fly it as a large R/C helicopter.
This is a revisit to the explanation, but it is a long and boring one.
DESIGN: Electrotor-SloMo - Control - Flight - Auto-Collective by Torque-Pitch Coupling - Overview
OTHER: Rotor Concept - Flight Control - Torque/Pitch Collective Rotor Hub
Dave