- Jan 2, 2009
- Centre FRANCE
- I piloted gliders C800, Bijave, C 310, airplanes Piper J3 , PA 28, Jodel D117, DR 220, Cessna 150, C
- Total Flight Time
- About 500 h (FW + ultra light)
The White Cavalon I am flying (509PH) at 6,500 feet is showing between 400 and 410 rotor rpm.
The Predator at sea level typically flies level at 315 rotor rpm but I have seen close to 400 rpm at 12,500 feet. At a density altitude of 6,500 feet she flies around 360 rotor rpm.
Taking into account 6500 ft indicated by Vance, it appears that the aerodynamic pitch during the flight is 4.1° for Predator, and 3.1° for Cavalon.
Good value is from 3° to 3.5°. >4° is less safe in my opinion.