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Re : Vortex generators

 
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jeanphilippeneel(at)yahoo
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PostPosted: Tue Feb 28, 2012 12:07 am    Post subject: Re : Vortex generators Reply with quote
Salut Michel
Michel Jambon a je crois des saumons allongés et equipés de mini winglets
JP



De : mau11 <mau11(at)free.fr>
À : europa-list <europa-list(at)matronics.com>
Envoyé le : Mardi 28 février 2012 6h40
Objet : Vortex generators
#yiv906456659 BLOCKQUOTE { MARGIN-TOP:0px;MARGIN-BOTTOM:0px;MARGIN-LEFT:2em;} #yiv906456659 OL { MARGIN-TOP:0px;MARGIN-BOTTOM:0px;} #yiv906456659 UL { MARGIN-TOP:0px;MARGIN-BOTTOM:0px;} Hi all,
Does anyone have knowledge to use vortex generators on Europa airfoil ?

And what position in % on the airfoil chord ?

Tha goal is to reduce stall speed.

Thanks

Michel AUVRAY
Builder 145

[quote]

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frans(at)privatepilots.nl
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PostPosted: Tue Feb 28, 2012 2:58 am    Post subject: Re : Vortex generators Reply with quote
On 02/28/2012 09:05 AM, NEEL Jean Philippe wrote:
Quote:
Salut Michel
Michel Jambon a je crois des saumons allongés et equipés de mini winglets

???? Please keep it in Enlish, like we Duchmen and Germans do in this
forum. If you fancy the privacy of your own tongue, you'd better use
private email.

Be careful with vortex generators and winglets (I recognized the word
"winglets" so I assume someone is considering this). The Europa wing is
a modern design that doesn't need these "improvements". Vortex
generators might reduce the stall speed but come with a price like a
lower top speed and more drag. If you want this, maybe the concept of
the Europa doesn't fit too well and you'd better be looking for a
pipercub or something like that.
Winglets are useless on the Europa and only increase drag. The wing tips
of the Europa do not provide much lift and can be considered as open
folded (invisible) winglets. There is not much air at the wing tips that
wants to switch side, so vertical winglets serve no purpose here but
only increase frontal area and skin drag.

The Europa wings are designed by Don Dykins and well thought out, there
is no improvement possible without introducing some compromises.

Frans

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jimpuglise(at)comcast.net
Guest
PostPosted: Tue Feb 28, 2012 7:10 am    Post subject: Re : Vortex generators Reply with quote
Michel-

You really need to talk to Bud Yearly about the VGs. I think he has a kit containing them, and also has done some performance testing. The Europa LSA wing does not use them, it is a new airfoil. 

Jim Puglise
N283JL
Punta Gorda, FL

From: "NEEL Jean Philippe" <jeanphilippeneel(at)yahoo.fr>
To: europa-list(at)matronics.com
Sent: Tuesday, February 28, 2012 3:05:27 AM
Subject: Re : Vortex generators

Salut Michel
Michel Jambon a je crois des saumons allongés et equipés de mini winglets
JP



De : mau11 <mau11(at)free.fr>
À : europa-list <europa-list(at)matronics.com>
Envoyé le : Mardi 28 février 2012 6h40
Objet : Vortex generators
#yiv906456659 BLOCKQUOTE { MARGIN-TOP:0px;MARGIN-BOTTOM:0px;MARGIN-LEFT:2em;} #yiv906456659 OL { MARGIN-TOP:0px;MARGIN-BOTTOM:0px;} #yiv906456659 UL { MARGIN-TOP:0px;MARGIN-BOTTOM:0px;} Hi all,
Does anyone have knowledge to use vortex generators on Europa airfoil ?

And what position in % on the airfoil chord ?

Tha goal is to reduce stall speed.

Thanks

Michel AUVRAY
Builder 145

[quote]

el=nofollow target=_blank>http://www.matronics.com/Navigator?Europa-List
et=_blank>http://forums.matronics.com
llow target=_blank>http://www.matronics.com/contribution



arget="_blank">http://www.matronics.com/Navigator?Europa-List
tp://forums.matronics.com
_blank">http://www.matronics.com/contribution

[b]

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