Member Since : 2017
Rotor Blade RPM setting
I see a lot of discussion re low rotor RPM but have not seen much on the governor setting
The green arc for rotor rpm on a R22 is 101% to 104%.
I guess most governors are set by the AMO within this 3% limit, but what will be the effect if the governor is set to its max allowable limit (say 104%) versus a machine that is set at its minimum setting (say 101%)
Rotor tip speed at 100% is given at 672 fps (737 km/h)
At 104% it is 699 (767 km/h)
That is a 30 km hr difference and should have a notable effect on performance
I tend to reason the machine with the higher blade speed will
Use more fuel ?
Fly faster ?
Generate more lift and better high altitude performance ?
Have more engine power available ?
Will VNE be less for the faster rotating machine ?
The limits are less for the R44 (101% and 102%)
Thank you in advance to all the technical guru's