hgmckay
Joined: 23 May 2006
Posts: 397
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 Posted: Mon Jun 23, 2008 6:10 pm Post subject: Vortex Generators |
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Paul:
I read your May 26, 2008 Matronics Allegro-List post on the above subject
with great interest. I also have an Allegro 2000 and am contemplating adding
vortex generators. I assume from your post that you used the Stolspeed
Feathers VGs. Did you follow their instructions concerning installing the
VGs? The Allegro 2000 has a main wing chord of 42 inches. 7% of this is 2.94
inches. Did you place the tips of the VGs 2.94 inches back from the leading
edge? From the end of the flaps to the wing tip the wing chord varies, but I
notice that the instructions from Stolspeed state that for a wing with a
swept-back leading edge (varying chord) they still call for a line 7% of
chord back from the leading edge and parallel to the leading edge. I don't
understand this. Is this still 7% of the main wing chord of 42 inches? If
the chord is varying, why are the tips of the VGs at the same constant
distance back from the leading edge? Further comments from you and others on
this subject would be appreciated.
Hugh McKay in North Carolina, USA
Hugh McKay
Allegro 2000
Rotax 912UL
N661WW
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