[NSRCA-discussion] Aero design question

[John Ferrell]

I have spent a fair amount of time considering this situation. I have concluded there is no reason to take the risk of adding unnecessary turbulence to the empennage.

In gentle maneuvering it probably has little effect. In aggressive maneuvering (think snaps) it likely leads to inconsistent behavior. Inboard ailerons may contribute additional available force in 3D maneuvers (hanging on prop?).  

Other related considerations are aileron shape and the hinging geometry. I also suspect fat fuselages reduce these effects by dispersing the turbulence over a greater volume of air.

Just my two cents worth!

John Ferrell    W8CCW
"My Competition is not my enemy"
http://DixieNC.US

  ----- Original Message ----- 
  From: Peter Pennisi 
  To: 'NSRCA Mailing List' 
  Sent: Friday, September 01, 2006 8:35 PM
  Subject: [NSRCA-discussion] Aero design question


   

  My current model has ailerons which extend a fair way towards the fuselage (Comp-ARF IMPACT) What effect does the turbulence coming off the aileron have on the tail plane. I am currently building another IMPACT (IMHO flies extremely well) which I am considering to reduce their size by cutting and fixing the inboard part to the wing in an attempt to clean up the airflow over the tail plane during rolling maneuvers .  The model does roll well but it could be better.

   

  Am I barking up the wrong tree - any thoughts!

   

  Peter 



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