but on the last day I saw that at 50-60 kph helicopter started shuttering .VSI was 2-2.5 and as I add more power the shuttering increased. Can you plz tell me whether it was normal or symptoms of VRS.
Is there any chance that with those vibration i will fall into vortex ring state?? Or its just because of transverse flow effect/loosing ETL. Can I get the explanation?
Can any one plz clarify me that if speed for getting ETL is constant for each type of helicopter?? If not what all the the factors that will affect the speed of ETL?? Why there is range of speed 16-24 kts?
1. For Mi-8 helicopter what will happen if our tail boom is broken up in the air at 180 kph??
2. What will happen if we have got single engine failure at 220 kph with full load??
For MI-8 why we maintain 95%. Why RPM 192 is not considered as 100%. Is there any relation related to sound speed ??? Or its just a company policy??What will happen if the rotor speed crosses sound speed an In which circumstances it may happen??