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mau11(at)free.fr
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 Posted: Mon Feb 27, 2012 9:43 pm Post subject: Vortex generators |
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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
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| | - The Matronics Europa-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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steven.pitt2(at)ntlworld.
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| Posted: Mon Feb 27, 2012 11:15 pm Post subject: Vortex generators |
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Michel,
Contact Bud in Florida
budyerly(at)msn.com (budyerly(at)msn.com)
- he has the Europa cleared as a LSA by use of vortex generators.
Regards
Steve Pitt
[quote] ---
| | - The Matronics Europa-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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flyingphil2
Joined: 04 Dec 2009
Posts: 117
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| Posted: Tue Feb 28, 2012 3:44 am Post subject: Re: Vortex generators |
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Out of interest, are there any photos or drawings of the LSA wing for the Europa?
Phil
| | - The Matronics Europa-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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budyerly(at)msn.com
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| Posted: Tue Feb 28, 2012 8:31 am Post subject: Vortex generators |
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<?xml:namespace prefix="v" /><?xml:namespace prefix="o" /><![endif]--> Phil,
We found that the original idea of molding slots into the XS wing was heavy and not cost effective.
Reducing the empty weight of the XS is a problem and the LSA wing made from carbon fiber was considered but the cost at $40 per yard of cloth doubled the price of the wings to over $40K. Ouch.
Through the use of proper sized and placed vortex generators VG, the Eruopa XS wing and Classic wing can meet LSA stall criteria. However the useful load is a problem to fly legally. Most Europas are north of 900 pounds empty. The foam wing Classic trigear is a nice fit for LSA though. Mine still came in at 904 pounds.
Pros:
Clean slow flight can be accomplished at 45 Knots.
Touchdowns lower than 40 can be achieved routinely.
Pre stall buffet is a delight. Comes on as a nice rumble and slight stick shaker with no wing rock when applied properly.
STOL capability is improved obviously.
Drawbacks are:
Cruise is diminished by no more than 10 knots.
The deck angle with no flaps is nearly 20 degrees at stall. It really hangs on so it is possible to drag the tail of a trigear even with a full flap landing.
Unsightly things sticking out of the top of the aircraft wing.
Ours are clear and shaped to the contour of the wing so install is easy, but requires exact templates to get the angles right on the VGs. They are also removable without damaging the paint due to new glue advances.
Contact me off line and I can build you up a kit.
Regards,
Bud Yerly
Custom Flight Creations, Inc.
www.customflightcreations.com
(813) 653-4989
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| | - The Matronics Europa-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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