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Vortex Generators

 
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snaproll(at)whidbey.com
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PostPosted: Sat Sep 21, 2013 12:07 pm    Post subject: Vortex Generators Reply with quote
Hello All..

Have had much success with these on Yaks and other airshow planes. 1-15% on the low end is huge. I put some on my Glasair at 10% of cord but really did not see much difference in the stall speed. Has anyone else put Vortex generators on and what is your experience please?

Thanks Much,

Bob
[quote][b]

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gossend(at)gmail.com
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PostPosted: Sat Sep 21, 2013 4:35 pm    Post subject: Vortex Generators Reply with quote
Hi Bob, which Glasair model do you have?
On Sep 21, 2013, at 2:03 PM, Bob Granley <snaproll(at)whidbey.com (snaproll(at)whidbey.com)> wrote:
[quote]Hello All..

Have had much success with these on Yaks and other airshow planes. 1-15% on the low end is huge. I put some on my Glasair at 10% of cord but really did not see much difference in the stall speed. Has anyone else put Vortex generators on and what is your experience please?

Thanks Much,

Bob

Quote:


style="color: rgb(149, 79, 114); text-decoration: underline; ">http://www.matronics.com/Navigator?Glasair-List
rgb(149, 79, 114); text-decoration: underline; ">http://forums.matronics.com
style="color: rgb(149, 79, 114); text-decoration: underline; ">http://www.matronics.com/contribution


[b]

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snaproll(at)whidbey.com
Guest
PostPosted: Sat Sep 21, 2013 5:22 pm    Post subject: Vortex Generators Reply with quote
Evening Dick,

I bought a Glasair 1 TD…early model with low hours. I have put some yarn on the wing at intervals. Unfortunately poorly filmed so I need to do it again. What seemed odd and I am not drawing conclusions here yet as I did not get the audio with it to give perspective, but it appeared that the wing root to 3’ was stalling long before the rest of the wing.

Just looking for some owners experience…or suggestions. Thanks!

Bob




From: owner-glasair-list-server(at)matronics.com [mailto:owner-glasair-list-server(at)matronics.com] On Behalf Of Dick Gossen
Sent: Saturday, September 21, 2013 5:35 PM
To: glasair-list(at)matronics.com
Subject: Re: Vortex Generators

Hi Bob, which Glasair model do you have?
On Sep 21, 2013, at 2:03 PM, Bob Granley <snaproll(at)whidbey.com (snaproll(at)whidbey.com)> wrote:

Quote:

Hello All..



Have had much success with these on Yaks and other airshow planes. 1-15% on the low end is huge. I put some on my Glasair at 10% of cord but really did not see much difference in the stall speed. Has anyone else put Vortex generators on and what is your experience please?



Thanks Much,



Bob
Quote:
  style="color: rgb(149, 79, 114); text-decoration: underline; ">http://www.matronics.com/Navigator?Glasair-Listrgb(149, 79, 114); text-decoration: underline; ">http://forums.matronics.comstyle="color: rgb(149, 79, 114); text-decoration: underline; ">http://www.matronics.com/contribution




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[quote][b]

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jhb478(at)yahoo.com
Guest
PostPosted: Sat Sep 21, 2013 5:48 pm    Post subject: Vortex Generators Reply with quote
I have a drawing from Harry Riblett showing drooped strakes at the root to fix that situation.
Unsure if anyone has tried it yet.
John Bolding

I have a buddy that has installed VG's on 3 different airplanes, all with good/VERY good results but he found placement was pretty critical.

From: Bob Granley <snaproll(at)whidbey.com>
To: glasair-list(at)matronics.com
Sent: Saturday, September 21, 2013 8:22 PM
Subject: RE: Vortex Generators


Evening Dick,

I bought a Glasair 1 TD…early model with low hours. I have put some yarn on the wing at intervals. Unfortunately poorly filmed so I need to do it again. What seemed odd and I am not drawing conclusions here yet as I did not get the audio with it to give perspective, but it appeared that the wing root to 3’ was stalling long before the rest of the wing.

Just looking for some owners experience…or suggestions. Thanks!

Bob




From: owner-glasair-list-server(at)matronics.com [mailto:owner-glasair-list-server(at)matronics.com] On Behalf Of Dick Gossen
Sent: Saturday, September 21, 2013 5:35 PM
To: glasair-list(at)matronics.com
Subject: Re: Vortex Generators

Hi Bob, which Glasair model do you have?
On Sep 21, 2013, at 2:03 PM, Bob Granley <snaproll(at)whidbey.com (snaproll(at)whidbey.com)> wrote:


Quote:
Hello All..



Have had much success with these on Yaks and other airshow planes. 1-15% on the low end is huge. I put some on my Glasair at 10% of cord but really did not see much difference in the stall speed. Has anyone else put Vortex generators on and what is your experience please?



Thanks Much,



Bob

Quote:
  style="color: rgb(149, 79, 114); text-decoration: underline; ">http://www.matronics.com/Navigator?Glasair-Listrgb(149, 79, 114); text-decoration: underline; ">http://forums.matronics.com/style="color: rgb(149, 79, 114); text-decoration: underline; ">http://www.matronics.com/contribution




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[quote][b]

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snaproll(at)whidbey.com
Guest
PostPosted: Sat Sep 21, 2013 6:05 pm    Post subject: Vortex Generators Reply with quote
Black science…completely! Would love to see the drawing if you are willing to share? My first question on watching the poor video …was this the strake causing this? My understanding is that the strake was added because of the docile stall characteristics. It appeared much different than the rest of the wing and now wondering if I should attempt to put them on different chord lengths. As long as both wings are the same…thoughts?

Bob




From: owner-glasair-list-server(at)matronics.com [mailto:owner-glasair-list-server(at)matronics.com] On Behalf Of jhb478
Sent: Saturday, September 21, 2013 6:48 PM
To: glasair-list(at)matronics.com
Subject: Re: Vortex Generators

I have a drawing from Harry Riblett showing drooped strakes at the root to fix that situation.

Unsure if anyone has tried it yet.

John Bolding



I have a buddy that has installed VG's on 3 different airplanes, all with good/VERY good results but he found placement was pretty critical.



From: Bob Granley <snaproll(at)whidbey.com (snaproll(at)whidbey.com)>
To: glasair-list(at)matronics.com (glasair-list(at)matronics.com)
Sent: Saturday, September 21, 2013 8:22 PM
Subject: RE: Vortex Generators


Evening Dick,



I bought a Glasair 1 TD…early model with low hours. I have put some yarn on the wing at intervals. Unfortunately poorly filmed so I need to do it again. What seemed odd and I am not drawing conclusions here yet as I did not get the audio with it to give perspective, but it appeared that the wing root to 3’ was stalling long before the rest of the wing.



Just looking for some owners experience…or suggestions. Thanks!



Bob









From: owner-glasair-list-server(at)matronics.com (owner-glasair-list-server(at)matronics.com) [mailto:owner-glasair-list-server(at)matronics.com (owner-glasair-list-server(at)matronics.com)] On Behalf Of Dick Gossen
Sent: Saturday, September 21, 2013 5:35 PM
To: glasair-list(at)matronics.com (glasair-list(at)matronics.com)
Subject: Re: Vortex Generators



Hi Bob, which Glasair model do you have?

On Sep 21, 2013, at 2:03 PM, Bob Granley <snaproll(at)whidbey.com (snaproll(at)whidbey.com)> wrote:

Quote:

Hello All..

Have had much success with these on Yaks and other airshow planes. 1-15% on the low end is huge. I put some on my Glasair at 10% of cord but really did not see much difference in the stall speed. Has anyone else put Vortex generators on and what is your experience please?

Thanks Much,

Bob

Quote:
style="color: rgb(149, 79, 114); text-decoration: underline; ">http://www.matronics.com/Navigator?Glasair-Listrgb(149, 79, 114); text-decoration: underline; ">http://forums.matronics.com/style="color: rgb(149, 79, 114); text-decoration: underline; ">http://www.matronics.com/contribution






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[quote][b]

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jhb478(at)yahoo.com
Guest
PostPosted: Sun Sep 22, 2013 4:46 am    Post subject: Vortex Generators Reply with quote
Sure, my scanner and computer are seeking counseling at the moment and aren't talking to each other but I'll find a way to post it , one of the grandkids will do it for me if I buy them some gas.
John

From: Bob Granley <snaproll(at)whidbey.com>
To: glasair-list(at)matronics.com
Sent: Saturday, September 21, 2013 9:05 PM
Subject: RE: Vortex Generators


Black science…completely! Would love to see the drawing if you are willing to share? My first question on watching the poor video …was this the strake causing this? My understanding is that the strake was added because of the docile stall characteristics. It appeared much different than the rest of the wing and now wondering if I should attempt to put them on different chord lengths. As long as both wings are the same…thoughts?

Bob




From: owner-glasair-list-server(at)matronics.com [mailto:owner-glasair-list-server(at)matronics.com] On Behalf Of jhb478
Sent: Saturday, September 21, 2013 6:48 PM
To: glasair-list(at)matronics.com
Subject: Re: Vortex Generators

I have a drawing from Harry Riblett showing drooped strakes at the root to fix that situation.

Unsure if anyone has tried it yet.

John Bolding



I have a buddy that has installed VG's on 3 different airplanes, all with good/VERY good results but he found placement was pretty critical.



From: Bob Granley <snaproll(at)whidbey.com (snaproll(at)whidbey.com)>
To: glasair-list(at)matronics.com (glasair-list(at)matronics.com)
Sent: Saturday, September 21, 2013 8:22 PM
Subject: RE: Vortex Generators


Evening Dick,



I bought a Glasair 1 TD…early model with low hours. I have put some yarn on the wing at intervals. Unfortunately poorly filmed so I need to do it again. What seemed odd and I am not drawing conclusions here yet as I did not get the audio with it to give perspective, but it appeared that the wing root to 3’ was stalling long before the rest of the wing.



Just looking for some owners experience…or suggestions. Thanks!



Bob

 







From: owner-glasair-list-server(at)matronics.com (owner-glasair-list-server(at)matronics.com) [mailto:owner-glasair-list-server(at)matronics.com (owner-glasair-list-server(at)matronics.com)] On Behalf Of Dick Gossen
Sent: Saturday, September 21, 2013 5:35 PM
To: glasair-list(at)matronics.com (glasair-list(at)matronics.com)
Subject: Re: Vortex Generators



Hi Bob, which Glasair model do you have?

On Sep 21, 2013, at 2:03 PM, Bob Granley <snaproll(at)whidbey.com (snaproll(at)whidbey.com)> wrote:


Quote:
Hello All..

Have had much success with these on Yaks and other airshow planes. 1-15% on the low end is huge. I put some on my Glasair at 10% of cord but really did not see much difference in the stall speed. Has anyone else put Vortex generators on and what is your experience please?

Thanks Much,

Bob
Quote:
style="color: rgb(149, 79, 114); text-decoration: underline; ">http://www.matronics.com/Navigator?Glasair-Listrgb(149, 79, 114); text-decoration: underline; ">http://forums.matronics.com/style="color: rgb(149, 79, 114); text-decoration: underline; ">http://www.matronics.com/contribution






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