Flap drag

[chrisal]

Hi

Can anyone clear this up?
In a size for size situation which produce more drag - Plain or Fowler flaps?

I know the Fowler flap will produce more lift but does that affect drag performance?

Cheers
Chris

[barit1]

At full flap (assuming equal flap area and deflection) there may not be much difference in drag.

But since you can probably use smaller size Fowler flaps, drag may be less.