Today's Message Index:
----------------------
1. 09:32 AM - Airfoil Drag Video... (Matt Dralle)
2. 11:25 AM - Re: RV-List: Airfoil Drag Video... (Ralph Finch)
3. 12:11 PM - Re: Re: RV-List: Airfoil Drag Video... (Paul Pflimlin)
Message 1
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| Subject: | Airfoil Drag Video... |
This is a REALLY interesting video about drag. I had no idea...
http://www.youtube.com/watch?v=ftq8jTQ8ANE
Matt
-
Matt Dralle
RV-8 #82880 N998RV
http://www.mattsrv8.com - Matt's RV-8 Construction Log
http://www.youtube.com/MattsRV8 - Matt's RV-8 HDTV YouTube Channel
Status: 132+ Hours TTSN - The Fun Never Stops...
Message 2
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| Subject: | RE: RV-List: Airfoil Drag Video... |
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!
-----Original Message-----
From: owner-rv-list-server@matronics.com
[mailto:owner-rv-list-server@matronics.com] On Behalf Of Matt Dralle
Sent: Monday, January 10, 2011 9:29 AM
rv10-list@matronics.com
Subject: RV-List: Airfoil Drag Video...
--> RV-List message posted by: Matt Dralle <dralle@matronics.com>
This is a REALLY interesting video about drag. I had no idea...
http://www.youtube.com/watch?v=ftq8jTQ8ANE
Matt
-
Matt Dralle
RV-8 #82880 N998RV
http://www.mattsrv8.com - Matt's RV-8 Construction Log
http://www.youtube.com/MattsRV8 - Matt's RV-8 HDTV YouTube Channel
Status: 132+ Hours TTSN - The Fun Never Stops...
Message 3
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| Subject: | Re: RE: RV-List: Airfoil Drag Video... |
Note: Test in fluid dynamics was state of art 68 years ago.
----- Original Message -----
From: "Ralph Finch" <ralphmariafinch@gmail.com>
<rv8-list@matronics.com>; <rv10-list@matronics.com>
Sent: Monday, January 10, 2011 11:11 AM
Subject: RV7-List: RE: RV-List: Airfoil Drag Video...
>
> 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!
>
> -----Original Message-----
> From: owner-rv-list-server@matronics.com
> [mailto:owner-rv-list-server@matronics.com] On Behalf Of Matt Dralle
> Sent: Monday, January 10, 2011 9:29 AM
> To: rv-list@matronics.com; rv7-list@matronics.com; rv8-list@matronics.com;
> rv10-list@matronics.com
> Subject: RV-List: Airfoil Drag Video...
>
> --> RV-List message posted by: Matt Dralle <dralle@matronics.com>
>
> This is a REALLY interesting video about drag. I had no idea...
>
>
> http://www.youtube.com/watch?v=ftq8jTQ8ANE
>
> Matt
>
> -
> Matt Dralle
> RV-8 #82880 N998RV
> http://www.mattsrv8.com - Matt's RV-8 Construction Log
> http://www.youtube.com/MattsRV8 - Matt's RV-8 HDTV YouTube Channel
> Status: 132+ Hours TTSN - The Fun Never Stops...
>
>
> -----
> No virus found in this message.
> Checked by AVG - www.avg.com
>
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