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rickofudall
Joined: 19 Sep 2009
Posts: 1392
Location: Udall, KS, USA
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 Posted: Thu Nov 05, 2009 12:28 pm Post subject: Tuft study stills |
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So far so good. I've learned how to break out still pictures from the video. Using my timeline (I took a stop watch with me on the flight) I took stills from each of the speed ranges I studied. To the extent possible I tried to be random in the selection so I didn't cherry pick a shot to match my conclusions. If anyone on the forum is an experienced Movie Maker user and you have any tips, please contact me off forum, otherwise, please don't laugh at my bumbling. 
Rick Girard
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Dana
Joined: 13 Dec 2007
Posts: 1047
Location: Connecticut, USA
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| Posted: Thu Nov 05, 2009 4:12 pm Post subject: Tuft study stills |
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At 03:24 PM 11/5/2009, Richard Girard wrote:
| Quote: | So far so good. I've learned how to break out still pictures from the
video. Using my timeline (I took a stop watch with me on the flight) I
took stills from each of the speed ranges I studied. To the extent
possible I tried to be random in the selection so I didn't cherry pick a
shot to match my conclusions.
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Interesting. It looks like you have smoother airflow at lower speed (i.e.
higher AOA) than higher speed. The flow seems to be disturbed form
surfaces farther forward, so I'd say the flow over the windshield is
smoother at higher AOA (which make sense from what I know of the Kolb
windshield shape).
-Dana
--
"I'm a lawyer." "Honest?" "No, the usual kind."
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Thom Riddle
Joined: 10 Jan 2006
Posts: 1597
Location: Buffalo, NY, USA (9G0)
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| Posted: Fri Nov 06, 2009 5:55 am Post subject: Re: Tuft study stills |
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Rick,
Interesting indeed. At the slower speeds, the only meaningful disturbance seems to be near the bulkhead/break just aft of the seats. Other than that, the tufts don't looks so bad and by the time the airflow gets to the prop area it looks pretty decent.
At the higher speeds, were you descending or flying straight and level?
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_________________
Thom Riddle
Buffalo, NY (9G0)
Don't worry about old age... it doesn't last very long.
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rickofudall
Joined: 19 Sep 2009
Posts: 1392
Location: Udall, KS, USA
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| Posted: Fri Nov 06, 2009 7:29 am Post subject: Tuft study stills |
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All done in level flight.
Rick
On Fri, Nov 6, 2009 at 7:55 AM, Thom Riddle <riddletr(at)gmail.com (riddletr(at)gmail.com)> wrote:
[quote]--> Kolb-List message posted by: "Thom Riddle" <riddletr(at)gmail.com (riddletr(at)gmail.com)>
Rick,
Interesting indeed. At the slower speeds, the only meaningful disturbance seems to be near the bulkhead/break just aft of the seats. Other than that, the tufts don't looks so bad and by the time the airflow gets to the prop area it looks pretty decent.
At the higher speeds, were you descending or flying straight and level?
--------
Thom Riddle
Buffalo, NY
Kolb Slingshot SS-021
Jabiru 2200A #1574
Tennessee Prop 64x31
I hear and I forget. I see and I remember. I do and I understand.
- Confuscius
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