RCU Forums - View Single Post - P factor
Thread: P factor
View Single Post
Old 06-04-2004 | 04:19 AM
  #3  
DipStick
Senior Member
 
Joined: Sep 2003
Posts: 129
Likes: 0
Received 0 Likes on 0 Posts
From: Holts Summit, MO
Default RE: P factor

dtom,

I agree with you that the explination seems flawed and I believe that the right side of the prop (the down going blade) is operating at a lower AOA and the up coming blade is operating at a higher angle of attack (at least that's what I see when I draw it out). That being said, the lift generated by the down going blade will be greater because of the increased velocity moving over the blade. Think about a helicopter (clockwise spin veiwed from below) the right side is seeing higher velocity compared to the left side. In the case of our plane, since V is squared, a little lower AOA at a higher speed will create more lift. I think from what I've read the slip stream is a large factor in the yaw effect. This might help.


[link]http://www.auf.asn.au/groundschool/umodule11.html#tophenomena[/link]

Steve