In a turbine helicopter with a power control lever for the turbines, when at ground idle the turbine should be around 65% rpm on the Nf and 100% on the Ng. At flight idle I should be at 100% for both.
Is this a true statement?
It’s not intuitive to me since the fuel flow to the gas turbine (Ng) I would think would slow both the Ng and Nf down to 65% at ground idle.
Trying to get my custom helicopter engine in P3D to behave as real as possible. Which means I’m writing my own engine code for the gauges.
Is it also a true statement that when both turbines are at Nf of 65% the rotor RPM drops to 65%?