---------------------------------------------------------- Kolb-List Digest Archive --- Total Messages Posted Tue 02/23/16: 8 ---------------------------------------------------------- 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 _____________________________________ Time: 05:40:43 AM PST US Subject: Kolb-List: Re: AOA video From: "Richard Pike" 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 _____________________________________ Time: 05:54:22 AM PST US From: "John Hauck" Subject: RE: Kolb-List: AOA video 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 -- 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 3 _____________________________________ Time: 07:56:15 AM PST US Subject: Re: Kolb-List: AOA video From: Charlie England 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 _____________________________________ Time: 06:20:08 PM PST US Subject: Kolb-List: AOA test 2 From: Larry Cottrell 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 _____________________________________ Time: 07:29:04 PM PST US From: "John Hauck" Subject: RE: Kolb-List: AOA test 2 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 _____________________________________ Time: 08:19:17 PM PST US Subject: Re: Kolb-List: AOA test 2 From: Larry Cottrell 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 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 _____________________________________ Time: 08:20:58 PM PST US Subject: Re: Kolb-List: AOA test 2 From: Larry Cottrell 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 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 _____________________________________ Time: 11:16:18 PM PST US Subject: Re: Kolb-List: AOA test 2 From: Herb 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 > 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./ -- Signature text; Fort Marcy Park? Sure...Mr. Foster...Third red light and turn left. ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message kolb-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Kolb-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/kolb-list Browse Digests http://www.matronics.com/digest/kolb-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.