RCU Forums - View Single Post - balancing a full flying stab
Thread: balancing a full flying stab
View Single Post
Old 07-21-2009, 02:00 PM
  #12  
HarryC
My Feedback: (1)
 
Join Date: Feb 2002
Location: private, UNITED KINGDOM
Posts: 3,672
Likes: 0
Received 26 Likes on 16 Posts
Default RE: balancing a full flying stab

ORIGINAL: 1Eye


I didn't see anybody mention the need to determine MAC (mean aerodynamic chord) yet. I've found the ''sweet spot'' for the pivot (and therefore balance) point is around 27% relative to the MAC.
ORIGINAL: HarryC

The ideal location of the pivot is at the aerodynamic centre.
The aerodynamic centre is 25% of MAC, give or take a percent depending upon the section. Any point aft of that such as 27% is moving into instability.
HarryC is offline  
Reply Like