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Old 01-25-2005 | 09:24 AM
  #38  
airasj
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From: Noordbrug, SOUTH AFRICA
Default RE: Pattern airframe design theory and discussion

[If you increase the wing area, induced drag increases and there's a better ticket....]

Hallo Mike,

Just a small point. You mentioned that is the wing area is increased, the induced drag increase. This is only true if the aspect ratio goes down. With increas area comes lower lift requirement from the airfoil, which leads to reduced induced drag. The induced drag formula is Cdi = k*(Cl)^2/(3.14159*AR). Therefore, an increase in wing area might even result in less induced drag.

Induced drag increases will only lead to high drag in high g situations where the wing works the hardest ( sharp corners etc. ) I do not know if this is desirable.

I agree that the best braking comes from the prop.

Thanks for a great information.

Regards
Attie