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ralphmariafinch(at)gmail.
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 Posted: Mon Jan 10, 2011 11:25 am Post subject: RV-List: Airfoil Drag Video... |
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Not repeatable therefore not real useful for comparison. The guy should
rotate the airfoils to minimum drag each time, otherwise, he doesn't know if
they are in comparable positions. It's also a shame he didn't replace the
airfoil with an equal-flow-area rectangular shape. As a result he produces
confusing and misleading results, inferring that a round shape has more drag
than a rectangular shape!
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acbuilder2
Joined: 18 Dec 2007
Posts: 3
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| Posted: Mon Jan 10, 2011 12:11 pm Post subject: RV-List: Airfoil Drag Video... |
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Note: Test in fluid dynamics was state of art 68 years ago.
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| | - The Matronics RV7-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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acbuilder2 |
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allenmurray(at)mindspring
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| Posted: Tue Jan 11, 2011 12:36 pm Post subject: RV-List: Airfoil Drag Video... |
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Fabulous! Thanks.
Allen Murray
On Jan 10, 2011, at 2:11 PM, Ralph Finch wrote:
[quote]
Not repeatable therefore not real useful for comparison. The guy should
rotate the airfoils to minimum drag each time, otherwise, he doesn't know if
they are in comparable positions. It's also a shame he didn't replace the
airfoil with an equal-flow-area rectangular shape. As a result he produces
confusing and misleading results, inferring that a round shape has more drag
than a rectangular shape!
--
| | - The Matronics RV7-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:
http://www.matronics.com/Navigator?RV7-List |
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