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Old Jan 04, 2008, 03:02 AM
Long to be flyin'
Antonsoarer's Avatar
Wirral, (UK)
Joined Dec 2003
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TWF: Pitcheron differential and LE shape?

TWF: Pitcheron differential? Do I need any diff on Aileron or Pitch movement?

Foil: Not Symmetrical and has low pitching moment.
LE shape should it be: Sharp? Blunt? or just Accurate?

Thanks to all TWF experts...
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Old Jan 04, 2008, 10:10 AM
slope'n the Colombian Andes
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Colombia, Antioquia, Girardota
Joined Mar 2001
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Ail diff probably will help.
Pitch diff probably will not be needed if plane is dialed in properly.
LE shape: accurate is best; err on side of bluntness.

Dieter Mahlein, ShredAir
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Old Jan 04, 2008, 10:41 AM
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A hut in the woods in Oregon
Joined Jan 2003
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LE shape:
What cuzzin Dieter said, you won't want any sharp LE stall when that wing panel is cranked 30 degrees past stall angle. Differential is a subtile thing, but let me add that you will have less differential than you would on an aileron ship. The less camber/pitching moment your airfoil has, the less diff you will need. I don't run any diff on any of my TWF, except maybe my Xica when I ran the Xingu 100 wings on it a while back.

WinchDoc
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Old Jan 04, 2008, 12:00 PM
Long to be flyin'
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Wirral, (UK)
Joined Dec 2003
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Thanks Dieter & Winchdoc for the feedback, no surprises there.

Tony.
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Old Jan 25, 2008, 07:25 AM
Family, wind, snow & fun
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Osburn Idaho
Joined May 2006
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Don't consider myself an expert on the matter but I know my experience falls right in line with winchdoc and dieter. Mtntop
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