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RV-10 Wing Stall Photo Series

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Tim Olson

Joined: 25 Jan 2007
Posts: 2879

Posted: Tue Apr 15, 2008 7:35 am Post subject: RV-10 Wing Stall Photo Series

Had to go out last night for a school project for my girl....

or at least that's the perfect excuse for it.



Here's a photo series you RV-10 nuts might like....shows a

bunch of shots leading up to a big stall of the wing.



http://www.myrv10.com/N104CD/flights/20080414



Enjoy!

Tim



-- 

Tim Olson - RV-10 N104CD - Flying

Do Not Archive

rv10builder(at)verizon.ne
Guest

Posted: Tue Apr 15, 2008 8:16 am Post subject: RV-10 Wing Stall Photo Series

As always a great review! Thanks!



Here is a video to show the effects on stall as well.

http://www.youtube.com/watch?v=sKzbeWwe0wM



Pascal

---

james.k.hovis(at)gmail.co
Guest

Posted: Tue Apr 15, 2008 9:28 am Post subject: RV-10 Wing Stall Photo Series

About what I'd expect to see Tim. What's the time interval between

pictures if I might ask?



On 4/15/08, Pascal <rv10builder(at)verizon.net> wrote:

[quote] 



 As always a great review! Thanks!



 Here is a video to show the effects on stall as well.

 http://www.youtube.com/watch?v=sKzbeWwe0wM



 Pascal

 ---

Tim Olson

Joined: 25 Jan 2007
Posts: 2879

Posted: Tue Apr 15, 2008 9:47 am Post subject: RV-10 Wing Stall Photo Series

Cool, I never saw that link before.  I did take video,

also, but haven't downloaded it and crunched it yet.  I figure

she can play the video at school and use the photos for

explaining.  Fun stuff!  If I get the video all done soon

I'll add it to that original link of mine.



Tim Olson - RV-10 N104CD - Flying

do not archive

Pascal wrote:

[quote] 

 

 As always a great review! Thanks!

 

 Here is a video to show the effects on stall as well.

 http://www.youtube.com/watch?v=sKzbeWwe0wM

 

 Pascal

 ---

Tim Olson

Joined: 25 Jan 2007
Posts: 2879

Posted: Tue Apr 15, 2008 9:51 am Post subject: RV-10 Wing Stall Photo Series

I'm not sure the interval...I just had her hold down the auto drive

on the camera...so maybe 2 or 3 shots per second or a bit less?

It did take quite a bit of work to get it really well into the

stall.  I saw airspeeds in the 40's when I was stalling too.

(No, I don't mean I was flying at 40....I was stalled)

It was very interesting to see how hard I had to work to really get

a nasty stall though.  I can't imagine someone stalling this plane

accidently, in a departure stall situation...it would take a

lot of work. When it buffets, you have lots of warning yet until

it gets wild.



What I really should do is videotape the EFIS during the stall.

I wasn't able to watch out the wing all the time, but I know

I saw pitch angles that were pretty steep...and red chevrons

telling me to knock it off.  And all that crabbing (a kinder word)

from Betty....



Tim Olson - RV-10 N104CD - Flying

do not archive

James K Hovis wrote:

 	  Quote: 	
		   

 

 About what I'd expect to see Tim. What's the time interval between

 pictures if I might ask?

james.k.hovis(at)gmail.co
Guest

Posted: Tue Apr 15, 2008 10:47 am Post subject: RV-10 Wing Stall Photo Series

Check this link for some of the physics invovled:

http://www.allstar.fiu.edu/aero/airflylvl3.htm

Probably too much for a 7 year old! Sometimes too much for a 42 yr old

Aerospace Engineer!

On 4/15/08, Tim Olson <Tim(at)myrv10.com> wrote:

 	  Quote: 	

 I'm not sure the interval...I just had her hold down the auto drive

 on the camera...so maybe 2 or 3 shots per second or a bit less?

 It did take quite a bit of work to get it really well into the

 stall.  I saw airspeeds in the 40's when I was stalling too.

 (No, I don't mean I was flying at 40....I was stalled)

 It was very interesting to see how hard I had to work to really get

 a nasty stall though.  I can't imagine someone stalling this plane

 accidently, in a departure stall situation...it would take a

 lot of work. When it buffets, you have lots of warning yet until

 it gets wild.

 What I really should do is videotape the EFIS during the stall.

 I wasn't able to watch out the wing all the time, but I know

 I saw pitch angles that were pretty steep...and red chevrons

 telling me to knock it off.  And all that crabbing (a kinder word)

 from Betty....

 Tim Olson - RV-10 N104CD - Flying

 do not archive

 James K Hovis wrote:

 > 

 >

 > About what I'd expect to see Tim. What's the time interval between

 > pictures if I might ask?

 >

coop85(at)cableone.net
Guest

Posted: Tue Apr 15, 2008 3:02 pm Post subject: RV-10 Wing Stall Photo Series

Tim,

   Great pictures and writeup.  



Another trick you can have your daughter do in class is take a sheet of

notebook paper, hold it by one edge with the page falling away from her face

and blow across the top.  The page lifts and proves the faster air/lower

pressure element pretty simply.



Marcus



--

flywrights(at)yahoo.com
Guest

Posted: Tue Apr 15, 2008 5:41 pm Post subject: RV-10 Wing Stall Photo Series

Very nice graphics on the stall progression!  I like that way it shows a non-theoretical flow toward the tip, not in a straight line but more on the diagonal.  I noticed that was flaps down.  Did you take any pics flaps up for comparison? 

  

Rob 

#392 



    between 0000-00-00 and 9999-99-99        <hr size=1>Be a better friend, newshound, and  [quote][b]

Tim Olson

Joined: 25 Jan 2007
Posts: 2879

Posted: Tue Apr 15, 2008 6:03 pm Post subject: RV-10 Wing Stall Photo Series

I did a couple with no flaps at first.  Not sure if I have snapshots of

those though.  It might be on the video when I get it ready.



Tim Olson - RV-10 N104CD - Flying

do not archive

Robert Wright wrote:

 	  Quote: 	
		   Very nice graphics on the stall progression!  I like that way it shows a 

 non-theoretical flow toward the tip, not in a straight line but more on 

 the diagonal.  I noticed that was flaps down.  Did you take any pics 

 flaps up for comparison?

 

  

 

 Rob

 

 #392

 

 

 

 between 0000-00-00 and 9999-99-99 <hr size=1>Be a better friend, 

 newshound, and

Ray.R.Doerr(at)sprint.com
Guest

Posted: Wed Apr 16, 2008 5:17 am Post subject: RV-10 Wing Stall Photo Series

Tim, those are very cool pictures.

Thank You

Ray Doerr

Airplane is finally in the paint shop after 2 years of flying.



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