Alot of Helipilots get hung up on the (Titty) HV Chart. Keep in mind that these charts are advisory (not Cold Limitations).
The HV chart has some fluidity to it's interpretation. Wind velocity
directly reduces the curve apex. Right turn, left turn, pitch up or down also has an effect (and any combination) Then there is the design fudge factor, certified authority factor etc. I have conducted throttle roll offs at 50' in B206's and UH-1's. The amount of kinetic energy stored is directly proportional to the reaction of the pilot's control input in such a situation. I'm sure all mono heli's don't react the same, and I have reservations about the R-22 models as well as one or two low inertia systems.
But remember when inside the Deadmans curve, be prepared to snap the collective down controlled and firmly....initially!!!!!!
