Originally Posted by
Ascend Charlie
Yes, the indicator is called the Collective, and the critical mark is when it reaches your armpit.
Is that measured in degrees from the floor board, or inches of penetration into the armpit as indicated by bruising?
The other indicators are "RPM LOW" and "beeeep beeeeep beeeep".
When we integrate those two dependent variables, the typical result is a decrease in the angle between collective and floorboard.
@John D
I have been told that the cutting edge bearingless rotors (Bell Viper/Venom) required that the design and test teams had to keep an eye on flapping during test and development, but do not have personal experience in that program.