Consider a double flapped airfoil. x h 1 = 0.2 c and x h 2 = 0.8 c deflected, re

Question

Consider a double flapped airfoil.xh1=0.2candxh2=0.8cdeflected, respectively, at angles?1and?2. We will show that for proper values of?1and?2, this mean camber line will resemble roughly a "reflex" profile, for a given?1>0(simulating positive camber, the sign and magnitude of?2will govern c(mac). Show that?2=?0.25?1is the condition that c(mac) = 0 for the combination. Show that with?2=0and?1>0,?c(mac)<0corresponds to a diving moment, but a very slightly negative?2will make the c(mac) of the combination vanish.

Explanation / Answer

https://docs.google.com/viewer?a=v&q=cache:ZwD8XPLrBecJ:www.dtic.mil/dtic/tr/fulltext/u2/a801099.pdf+&hl=en&gl=in&pid=bl&srcid=ADGEESgo1BgdH9IXgKkQCRZQitlBYiIrc7cPmVTKB78ClZEDOoFopnDrJlF8NzaW67aBTXo1QFQT7_riZzzjxZkbtibIxdo49OuLdCLJ-rJHdeyeCgC-iJZSgQ3djA3GQL6pt0yRibs0&sig=AHIEtbQK3QQMa9RO1CpZzrLsTj6ClXfy-A

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