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Will Aerobatics Twist A Yak 52 Airframe?

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PS

Joined: 08 Sep 2006
Posts: 84
Location: Texas

Posted: Fri Mar 24, 2017 3:29 pm Post subject: Will Aerobatics Twist A Yak 52 Airframe?

"Many of the Yaks that came out of Russia after the fall had been twisted by the aerobatics clubs. If you can get it to fly straight and level in cruise, let me know".



I received the above email concerning my Yak. I have been involved and owned Yaks over 17 years, and never heard anyone mention a "twisted" Yak. Is there any validity to this?  Being an nearly 0 deg dihedral aircraft, is a Yak 52 ever totally stable?  My aircraft flies great but has a slight roll to the right, so minor I never worry about it. 



Regards,



Phil

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_________________
Phil

Last edited by PS on Sat Mar 25, 2017 5:14 am; edited 1 time in total

markdavis(at)wbsnet.org
Guest

Posted: Fri Mar 24, 2017 4:11 pm Post subject: Twisted Yak 52 Airframe

With 4 degrees of dihedral, bending one a little might help with stability!  I can tweak trim tabs and get close, but power changes due to fuel or passenger weight will change it enough that a wing is always going to drop. The Soviets must have stolen the stability characteristics of an A-4 and applied them at the Yakovlev Design Bureau.  They forgot to steal Mr Heinemann's electric trim system design for the Scooter....



Fly Navy,

Mark Davis



Sent from my iPhone



 	  Quote: 	
		   On Mar 24, 2017, at 5:29 PM, PS <psalter(at)aol.com> wrote:

 

 

 

 Many of the Yaks that came out of Russia after the fall had been twisted by the aerobatics clubs. If you can get it to fly straight and level in cruise, let me know.

 

 I received the above email concerning my Yak. I have been involved and owned Yaks over 17 years, and never heard anyone mention a "twisted" Yak. Is there any validity to this?  Being an nearly 0 deg dihedral aircraft, is a Yak 52 ever totally stable?  My aircraft flies great but has a slight roll to the right, so minor I never worry about it. 

 

 Regards,

 

 Phil

 

 --------

 Phil

 

 

 

 

 Read this topic online here:

 

 http://forums.matronics.com/viewtopic.php?p=467584#467584

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