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Home > Forums > Aeronautic Engineers > Activities > Aircraft engineering Forum

Airleron angle

thread2-310209
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ArtWooD (Aeronautics)
9 Nov 11 10:46
Hello,

does someone know where to find how the airleron angle is calculated?
I mean the maximum deflection of the airleron wich is needed.  
CastMetal (Mechanical)
10 Nov 11 8:34
google knows all.......

http://www.flightlevelengineering.com/downloads/ProAdvice%203%20-%20AILERON%20SIZING.pdf

Comprehension is not understanding. Understanding is not wisdom. And it is wisdom that gives us the ability to apply what we know, to our real world situations

ArtWooD (Aeronautics)
10 Nov 11 10:00
Hi CastMetal,

thank you for this link! It is exactly what I was looking for.
I used google too, but only found very complicated instructions and a lot of mathematical stuff ;)
ArtWooD (Aeronautics)
17 Nov 11 12:23
I just have a question about the calculation of the airleron deflection angle.

Where do I get this data from?

1. Change in lift with aileron deflection: cldeltaa
2. Airfoil's lift curve slope: cldelta
3. Section drag coefficient: cdo

Is it possible to calculate them? Or do they come from flight tests?
rb1957 (Aerospace)
17 Nov 11 12:47
1) dCl/da ... you should be able to estimate (calculate is too "hi' folutin'") similar to a simple T/E flap ... basic design texts (torenbeek, raymer) or Hoerner (sp?) "Fluid Dynamic Lift"

airfoil Cl is generally available (for the wing airfoil and the aileron airfoil; also Cd.  look up the airfoil data (maybe on the NACA/NASA site).
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