At what point, or in what atmospheric conditions does a decrease in RPM help? (if ever) Say you are climbing out of a hole, I mentioned a TOT limited helicopter decreasing RPM to lower TOT, and increase Torque, and climb out...does this actually help, or are you just increasing induced drag through the rotor, and not increasing lift at all? What about in cruise? I am under the impression that increasing RPM on a hot day at altitude can increase range...is this true?
I am flying a S76 at the moment, do these rules apply to all types, or do different rotor designs have different rules?
Hovering