unclenobby
Well-Known Member
Maybe I'm just not reading it correct but the ASA book - A pilots guide to AC and their systems states re; forces acting on a prop....
"Aerodynamic twisting force tries to twist a blade to a higher pitch angle and centrifugal twisting force tries to twist them to a lower pitch angle"
while the following in the the Jepp ME book re; counterweights and constant speed props...
"...counterweights are attached to the blade shank so that when oil pressure is reduced in the hub, centrifugal force causes the blade angle to increase......the counterweights provide enough force to overcome the aerodynamic twisting force of the blades"
Seems to contradict?
"Aerodynamic twisting force tries to twist a blade to a higher pitch angle and centrifugal twisting force tries to twist them to a lower pitch angle"
while the following in the the Jepp ME book re; counterweights and constant speed props...
"...counterweights are attached to the blade shank so that when oil pressure is reduced in the hub, centrifugal force causes the blade angle to increase......the counterweights provide enough force to overcome the aerodynamic twisting force of the blades"
Seems to contradict?