Hi everyone,
I really need help from someone in explaining the governor in a controllable pitch propellor. I fly the seminole in commercial training right now and my instructor hasn't really explained it in detail to me, just myself trying to find explanations in books. I understand it provides various oil pressure to maintain a constant RPM but where does the nitrogen come into play? What are the details with the fly weights?

Many thanks and sorry if this is an easy explanation.

Harry