RE: stab tilt/tail boom flex

From: <upwind120_at_gmail.com>
Date: 10 Nov 2013 07:30:09 -0800

How about this? We normally think of just the wing as resisting torque so the model stays upright. The tail evidently does its part, too, but because it's attached to the rest of the plane by a very flexible boom, it yields more. The wing probably yields a bit as well, but not as much as the tail, so we can see a difference.
 

 ?
 

 a.
 

---In indoor_construction_at_yahoogroups.com, <ken@...> wrote:

 Prop Wash? It's twisting in the same direction the prop is turning. Just guessing.
 

 On Sat, Nov 9, 2013 at 1:51 PM, <Warthodson_at_... mailto:Warthodson@...> wrote:
   
 l have several interchangeable tail boom/stab assemblies for my A6. They all display the same phenomena. The tilt of the stab during flight is different from the tilt at rest. In every case during flight (even after the torque is burned off & the plane is in decent) the left side of the stab is tilted higher than it is at rest. All my stabs are different but they are all symmetric. I.E. the left panel is a mirror image of the right panel. And there is no discernible differential wash in/wash out from side to side. Of course, the degree of twist is dependent upon the rigidity of the boom, but all my tail assemblies display this phenomena to some extent. What aerodynamic force would explain this? Is this "normal" on duration models?
 Gary H
 
 
 
 




 
 
Received on Sun Nov 10 2013 - 07:30:10 CET