Helicopter Performance....
If I understand correctly, pilots flying reciprocal powered helicopters use manifold pressure to determine the power availible and the type of take off (e.g. towering or creeping cushion) that they can perform.
On a gas turbine helicopter I understand that N1 indicates the power level being provided, but I have never seen any reference to how the amout of power reserve relates to making landings or take off's..........can anyone help?