Quote:
Originally Posted by flatbutt
Five!? Holy moly. At idle? Forgive but I know nothing of helo ops.
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Interesting tidbit, Flat: Modern helos do not idle in terms of rotor speed...the main rotor spins at the same RPM when the helicopter is on the ground or in the air when the engines are engaged.
The term is Nr. When the pilot increases collective (essentially the gas pedal) to go fly, the Nr remains constant throughout the flight - at least I always hoped so
In the Navy H-60 the Nr is 258 RPM.
Nr below the constant RPM is called "drooping". Drooping is bad.
The only time the Nr changes is on shutdown, at least in the Navy. I can see the shutdown checklist as I type
