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Adjusting Angle of Incidence

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tonyvaccarella

Joined: 10 Sep 2014
Posts: 68
Location: Australia

Posted: Fri Sep 09, 2016 4:02 am Post subject: Adjusting Angle of Incidence

Hi All,



After finally getting my wings on again, I checked the Angle of Incidence to find that the port wing measures 2.5 degrees - as expected but the starboard wing measures 2.4 degrees. 



What I would like to know is how do you adjust the angle when the forward (W27) and aft sockets (W26) have already been bonded in place. From my investigations today, I believe that the leading edge pin and socket on the starboard wing needs to come up a fraction. 



I expect this is not the first time someone has had to make this adjustment and Im interested what solutions have been used by members of this forum.



Many thanks

Tony 

Sydney Australia

S/N A011

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_________________
Tony Vaccarella
Mascot NSW 2020
Sydney Australia

wdaniell.longport(at)gmai
Guest

Posted: Fri Sep 09, 2016 5:17 am Post subject: Adjusting Angle of Incidence

Tony

 I spoke to bud about this on my visit to his facility.  It might be worth calling him.  But basically he said that even if you build perfectly the incidence may change with finishing. Also that composite shifts over time.

 My build is like yours .1 off.  I plan to add vg to soften the stall.   

 Will 

On Sep 9, 2016 07:14, "tonyvaccarella" <tony(at)weimagine.com.au (tony(at)weimagine.com.au)> wrote: 	  Quote: 	
		  --> Europa-List message posted by: "tonyvaccarella" <tony(at)weimagine.com.au (tony(at)weimagine.com.au)>

 

 Hi All,

 

 After finally getting my wings on again, I checked the Angle of Incidence to find that the port wing measures 2.5 degrees - as expected but the starboard wing measures 2.4 degrees.

 

 What I would like to know is how do you adjust the angle when the forward (W27) and aft sockets (W26) have already been bonded in place. From my investigations today, I believe that the leading edge pin and socket on the starboard wing needs to come up a fraction.

 

 I expect this is not the first time someone has had to make this adjustment and Im interested what solutions have been used by members of this forum.

 

 Many thanks

 Tony

 Sydney Australia

 S/N A011

 

 --------

 Tony Vaccarella

 Mascot NSW 2020

 Sydney Australia

 

 

 

 

 Read this topic online here:

 

 http://forums.matronics.com/viewtopic.php?p=460370#460370

 

 

 

 

 

 

 

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ward.t(at)xtra.co.nz
Guest

Posted: Fri Sep 09, 2016 1:02 pm Post subject: Adjusting Angle of Incidence

Tony,

That may even be ideal as the aircraft tends to bank slightly left more so when you are the only one on board left seat due to slipstream effect and weight. I have a port aileron tab to keep wing level. Big vertical stabiliser and rudder gives the slipstream from prop rotating clockwise a left yaw increasing lift on right wing roll port.

That's a theory.

TIM



Sent from my iPhone 



 	  Quote: 	
		   On 10/09/2016, at 12:02 AM, tonyvaccarella <tony(at)weimagine.com.au> wrote:

 

 

 

 Hi All,

 

 After finally getting my wings on again, I checked the Angle of Incidence to find that the port wing measures 2.5 degrees - as expected but the starboard wing measures 2.4 degrees. 

 

 What I would like to know is how do you adjust the angle when the forward (W27) and aft sockets (W26) have already been bonded in place. From my investigations today, I believe that the leading edge pin and socket on the starboard wing needs to come up a fraction. 

 

 I expect this is not the first time someone has had to make this adjustment and Im interested what solutions have been used by members of this forum.

 

 Many thanks

 Tony 

 Sydney Australia

 S/N A011

 

 --------

 Tony Vaccarella

 Mascot NSW 2020

 Sydney Australia

 

 

 

 

 Read this topic online here:

 

 http://forums.matronics.com/viewtopic.php?p=460370#460370

- The Matronics Europa-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Europa-List

rampil

Joined: 04 May 2007
Posts: 870

Posted: Sat Sep 10, 2016 5:59 pm Post subject: Re: Adjusting Angle of Incidence

VGs may lower stall speed, but unless you have a plan to place them asymmetrically, I can't envision how they would reduce exciting behavior in 

an asymmetric lift stall condition. Then again, a 0.1• difference is certainly

within the envelope of control authority provided you keep the ball and 

wings level. Best to ask Bud! He's the one with a degree in aerodynamics!



Moving the forward socket requires jigs, digital level and cautious application

Of a heat gun. If you are not the original builder, I would suggest you subcontract the job to an expert.

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_________________
Ira N224XS

kaarsberg(at)terra.com.br
Guest

Posted: Mon Sep 12, 2016 3:09 am Post subject: Adjusting Angle of Incidence

I still believe that a simple transparent  hose with water in it must be far superior to any other means of measuring, however hi-tech it is!

With this method you get to avoid any possible instrument-to-jig inaccuracies and you will practically have an infinite resolution. 



Regards,

Alex Kaarsberg



 	  Quote: 	
		   On 11 de set de 2016, at 04:59, rampil <ira.rampil(at)gmail.com> wrote:

 

 

 

 VGs may lower stall speed, but unless you have a plan to place them asymmetrically, I can't envision how they would reduce exciting behavior in 

 an asymmetric lift stall condition. Then again, a 0.1• difference is certainly

 within the envelope of control authority provided you keep the ball and 

 wings level. Best to ask Bud! He's the one with a degree in aerodynamics!

 

 Moving the forward socket requires jigs, digital level and cautious application

 Of a heat gun. If you are not the original builder, I would suggest you subcontract the job to an expert.

 

 --------

 Ira N224XS

 

 

 

 

 Read this topic online here:

 

 http://forums.matronics.com/viewtopic.php?p=460400#460400

- The Matronics Europa-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

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