Today's Message Index:
----------------------
1. 05:40 AM - Re: AOA video (Richard Pike)
2. 05:54 AM - Re: AOA video (John Hauck)
3. 07:56 AM - Re: AOA video (Charlie England)
4. 06:20 PM - AOA test 2 (Larry Cottrell)
5. 07:29 PM - Re: AOA test 2 (John Hauck)
6. 08:19 PM - Re: AOA test 2 (Larry Cottrell)
7. 08:20 PM - Re: AOA test 2 (Larry Cottrell)
8. 11:16 PM - Re: AOA test 2 (Herb)
Message 1
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Thank you for doing that. Finished the winter maintenance on the MKIII, did a couple
test flights and am now airworthy again, however my AOA meter is still sitting
on the work bench awaiting the arrival of the gauge itself. So your comments
have given me an idea of what baseline alignment ought to be.
--------
Richard Pike
Kolb MKIII N420P (420ldPoops)
Kingsport, TN 3TN0
Would you consider yourself to be a good person?
https://www.youtube.com/watch?v=VWcDXT6pH7A
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=453082#453082
Message 2
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Forget about ground speed when flying, except to calculate your ETA back
to the barn.
Easy to screw up turning base to final, near the stall, with a little
tail wind. Perceived ground speed is high, air speed is low. That is
why I continually cross check my ASI. Takes a split second to scan.
Doesn't cost anything. ;-)
john h
mkIII
Titus, Alabama
From: owner-kolb-list-server@matronics.com
[mailto:owner-kolb-list-server@matronics.com] On Behalf Of Larry
Cottrell
Sent: Tuesday, February 23, 2016 1:39 AM
Subject: Kolb-List: AOA video
https://vimeo.com/156368644 password- owyheeflyer
This is the video that I took while testing my crude wind vane to get
some idea of how much movement would be expected leading up to a stall.
I intended to do it last night, but when I looked at the video of the
GPS speed, I about convinced my self that I had not stalled after all. I
really had run it until it began to burble, and saw no need to go any
further than that. Then when I saw that the GPS speed was 40 MPH, I was
confused until I realized that I was doing my stalls down wind, and the
ASI was showing 29 MPH. I guess that is the reason they say that the
stall speed can change, but the Angle of Attack will not.
It was too windy to fly today, but I have changed out the vane and
replaced it with a 12 inch piece of yarn. I will mark it where I expect
it to stall, and by lengthening it, the ability to see when it will
stall will be at least doubled by the longer piece of yarn.
Larry
--
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Message 3
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On 2/23/2016 1:38 AM, Larry Cottrell wrote:
> https://vimeo.com/156368644 password- owyheeflyer
>
> This is the video that I took while testing my crude wind vane to get
> some idea of how much movement would be expected leading up to a
> stall. I intended to do it last night, but when I looked at the video
> of the GPS speed, I about convinced my self that I had not stalled
> after all. I really had run it until it began to burble, and saw no
> need to go any further than that. Then when I saw that the GPS speed
> was 40 MPH, I was confused until I realized that I was doing my stalls
> down wind, and the ASI was showing 29 MPH. I guess that is the reason
> they say that the stall speed can change, but the Angle of Attack will
> not.
>
> It was too windy to fly today, but I have changed out the vane and
> replaced it with a 12 inch piece of yarn. I will mark it where I
> expect it to stall, and by lengthening it, the ability to see when it
> will stall will be at least doubled by the longer piece of yarn.
>
> Larry
GPS ground speed is irrelevant to stall speed, just as it's irrelevant
to airspeed in general. Stall indicated airspeed changes with weight,
assuming a 1 G stall. (Stall *true* airspeed changes with density altitude.)
To see the effects of changing indicated airspeed at stall, get your AOA
working consistently and reliably, and fly a stall series with minimal
fuel and as light a payload as possible. Note the indicated airspeed and
AOA at stall. Then load the plane up with full fuel and max payload to
gross weight, and fly another stall series. You should see a higher
indicated airspeed at stall, but the same AOA.
(GPS ground speed can vary all over the map, depending on wind
speed/direction at that moment & your heading when doing the stall series.)
Charlie
Message 4
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https://vimeo.com/156496788 password- owyheeflyer
I replaced the vane with a piece of yarn that was 12 inches long, reasoning
that a longer indicator would allow better decisions- sooner. I was quite
happy with the results, and found that the longer yarn did give ample
warning before stall.
Larry
--
*The older I get, the less tolerant I am of those who are intolerant.*
*If you forward this email, or any part of it, please remove my email
address before sending.*
Message 5
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Looked like it worked pretty good, except for the tail flutter.
Beautiful day at the Rock House.
We are, and have been most of the day and night, under severe tornado
watch. Can't tell it by me.
john
From: owner-kolb-list-server@matronics.com
[mailto:owner-kolb-list-server@matronics.com] On Behalf Of Larry
Cottrell
Sent: Tuesday, February 23, 2016 8:20 PM
Subject: Kolb-List: AOA test 2
https://vimeo.com/156496788 password- owyheeflyer
I replaced the vane with a piece of yarn that was 12 inches long,
reasoning that a longer indicator would allow better decisions- sooner.
I was quite happy with the results, and found that the longer yarn did
give ample warning before stall.
Larry
--
The older I get, the less tolerant I am of those who are intolerant.
If you forward this email, or any part of it, please remove my email
address before sending.
Message 6
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The tail flutter was during the stall. I also noticed that the air vent
would bang open during a stall.
Hope it misses you.
Larry
On Tue, Feb 23, 2016 at 8:28 PM, John Hauck <jhauck@elmore.rr.com> wrote:
> Looked like it worked pretty good, except for the tail flutter.
>
>
> Beautiful day at the Rock House.
>
>
> We are, and have been most of the day and night, under severe tornado
> watch. Can't tell it by me.
>
>
> john
>
>
> *From:* owner-kolb-list-server@matronics.com [mailto:
> owner-kolb-list-server@matronics.com] *On Behalf Of *Larry Cottrell
> *Sent:* Tuesday, February 23, 2016 8:20 PM
> *To:* kolb-list@matronics.com
> *Subject:* Kolb-List: AOA test 2
>
>
> https://vimeo.com/156496788 password- owyheeflyer
>
>
> I replaced the vane with a piece of yarn that was 12 inches long,
> reasoning that a longer indicator would allow better decisions- sooner. I
> was quite happy with the results, and found that the longer yarn did give
> ample warning before stall.
>
> Larry
>
>
> --
>
> *The older I get, the less tolerant I am of those who are intolerant.*
>
>
> *If you forward this email, or any part of it, please remove my email
> address before sending.*
>
--
*The older I get, the less tolerant I am of those who are intolerant.*
*If you forward this email, or any part of it, please remove my email
address before sending.*
Message 7
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Hopefully the weather will hold. I just heard from Richard at 12 mile, that
there is supposed to be a herd of Elk that numbers about 650 hanging out in
the Bowden Hills. Need to go see.
Larry
On Tue, Feb 23, 2016 at 8:28 PM, John Hauck <jhauck@elmore.rr.com> wrote:
> Looked like it worked pretty good, except for the tail flutter.
>
>
> Beautiful day at the Rock House.
>
>
> We are, and have been most of the day and night, under severe tornado
> watch. Can't tell it by me.
>
>
> john
>
>
> *From:* owner-kolb-list-server@matronics.com [mailto:
> owner-kolb-list-server@matronics.com] *On Behalf Of *Larry Cottrell
> *Sent:* Tuesday, February 23, 2016 8:20 PM
> *To:* kolb-list@matronics.com
> *Subject:* Kolb-List: AOA test 2
>
>
> https://vimeo.com/156496788 password- owyheeflyer
>
>
> I replaced the vane with a piece of yarn that was 12 inches long,
> reasoning that a longer indicator would allow better decisions- sooner. I
> was quite happy with the results, and found that the longer yarn did give
> ample warning before stall.
>
> Larry
>
>
> --
>
> *The older I get, the less tolerant I am of those who are intolerant.*
>
>
> *If you forward this email, or any part of it, please remove my email
> address before sending.*
>
--
*The older I get, the less tolerant I am of those who are intolerant.*
*If you forward this email, or any part of it, please remove my email
address before sending.*
Message 8
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Maybe the Elk are having a caucus?? :-) Herb
On 02/23/2016 10:20 PM, Larry Cottrell wrote:
> Hopefully the weather will hold. I just heard from Richard at 12 mile,
> that there is supposed to be a herd of Elk that numbers about 650
> hanging out in the Bowden Hills. Need to go see.
> Larry
>
> On Tue, Feb 23, 2016 at 8:28 PM, John Hauck <jhauck@elmore.rr.com
> <mailto:jhauck@elmore.rr.com>> wrote:
>
> Looked like it worked pretty good, except for the tail flutter.
>
> Beautiful day at the Rock House.
>
> We are, and have been most of the day and night, under severe
> tornado watch.Can't tell it by me.
>
> john
>
> *From:*owner-kolb-list-server@matronics.com
> <mailto:owner-kolb-list-server@matronics.com>
> [mailto:owner-kolb-list-server@matronics.com
> <mailto:owner-kolb-list-server@matronics.com>] *On Behalf Of
> *Larry Cottrell
> *Sent:* Tuesday, February 23, 2016 8:20 PM
> *To:* kolb-list@matronics.com <mailto:kolb-list@matronics.com>
> *Subject:* Kolb-List: AOA test 2
>
> https://vimeo.com/156496788 password- owyheeflyer
>
> I replaced the vane with a piece of yarn that was 12 inches long,
> reasoning that a longer indicator would allow better decisions-
> sooner. I was quite happy with the results, and found that the
> longer yarn did give ample warning before stall.
>
> Larry
>
> --
>
> /The older I get, the less tolerant I am of those who are intolerant./
>
> /If you forward this email, or any part of it, please remove my
> email address before sending./
>
>
> --
> /The older I get, the less tolerant I am of those who are intolerant./
> /
> /
> /If you forward this email, or any part of it, please remove my email
> address before sending./
--
Signature text; Fort Marcy Park? Sure...Mr. Foster...Third red light and turn
left.
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