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Static Port

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Tim Juhl

Joined: 21 Mar 2006
Posts: 488
Location: "Thumb" of Michigan

Posted: Thu Feb 10, 2011 4:56 pm Post subject: Static Port

For those of you who installed the dynon pitot/AOA tube - where did you install the static port? Did you go with one or two?



Cessnas usually install the ports on the side of the fuselage, just behind the cowling.  That makes for a short run to the instrument panel.  In other aircraft I have also seen them installed on the tailcone.



Recommendations?



Tim

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don.honabach(at)pcperfect
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Posted: Thu Feb 10, 2011 5:25 pm Post subject: Static Port

I tried the pilot side of the fuselage - had bad readings, tried the passenger side, had better but still bad. Tried to tee them together - had better still yet but still a bit off. Opened up to the cockpit and have just about perfect - go figure!!!



Don

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mhubel

Joined: 05 Sep 2009
Posts: 141

Posted: Thu Feb 10, 2011 5:40 pm Post subject: Static Port

Tim,

     I used the Grumman approach and used two ports midway back on the 

fuselage. The result seems to be very well behaved in a slip.



On 02/10/2011 7:56 PM, Tim Juhl wrote:

 	  Quote: 	
		   



 For those of you who installed the dynon pitot/AOA tube - where did you install the static port? Did you go with one or two?



 Cessnas usually install the ports on the side of the fuselage, just behind the cowling.  That makes for a short run to the instrument panel.  In other aircraft I have also seen them installed on the tailcone.



 Recommendations?



 Tim



 --------

 ______________

 CFII

 Champ L16A flying

 Zodiac XL - Jabiru 3300A

 Tearing wings apart for modification





 Read this topic online here:



 http://forums.matronics.com/viewtopic.php?p=330531#330531




	


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Mark Hubelbank

NorthEast Monitoring

2 Clock Tower Place

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mhubel(at)nemon.com

978-443-3955

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jeffrey_davidson(at)earth
Guest

Posted: Fri Feb 11, 2011 12:44 am Post subject: Static Port

I used the Cessna 172M position initially.  I got lots of airspeed errors.  These were corrected by moving the static ports to a location on the fuselage forward of the horizontal tail.  I used ports on both sides to account for slips.  The results are good.

Jeff D.

601-HD

do not archive 

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dgardea(at)gmail.com

Joined: 26 Mar 2007
Posts: 50
Location: Indianapolis, IN

Posted: Fri Feb 11, 2011 6:53 am Post subject: Re: Static Port

Tim, I installed two static ports on either side of the fuselage just below the aft portion of the canopy about in line with the 601XL step. From there it was easy to route both lines to the Dynon ADAHRS and forward up the center console. I have not flown yet so don't know what results this will yield.

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chuck960

Joined: 11 Mar 2009
Posts: 44
Location: PA

Posted: Fri Aug 17, 2012 7:57 am Post subject: Re: Static Port

I started with the static ports half way between the flap and stabilizer on both  sides of the fuse. I compared airspeed with the GPS and I am slow by 12 mph. I disconnected the static line from the back of the Dynon and I am fast by 12 mph.  I was thinking of trying the fuse sides in front of the instrument panel.

Someone must have a good location.

Chuck

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psm(at)att.net
Guest

Posted: Fri Aug 17, 2012 8:17 am Post subject: Static Port

Hi Chuck,



I don't know which model 601 you have and it probably matters a lot.



On the XL the static port on the drawings is about half way out on the 

bottom of the wing.  It is on a tube that runs parallel to the pitot 

tube.  This works well.  I haven't done a formal calibration but the GPS 

speed and Dynon airspeed always seem quite close.



The fuselage on the XL doesn't have any points where its side runs 

parallel to the line of flight.  This means there is no "Neutral" 

position for static ports.  It also means there is no yaw stability 

until the rear end gets more than 11 degrees from straight ahead (the 

rear fuselage forms a 22 degree angle at the aft end).



Good luck,



Paul

XL about done with phase I flight test.

On 8/17/2012 8:57 AM, chuck960 wrote:

 	  Quote: 	
		   



 I started with the static ports half way between the flap and stabilizer on both  sides of the fuse. I compared airspeed with the GPS and I am slow by 12 mph. I disconnected the static line from the back of the Dynon and I am fast by 12 mph.  I was thinking of trying the fuse sides in front of the instrument panel.

 Someone must have a good location.

 Chuck





 Read this topic online here:



 http://forums.matronics.com/viewtopic.php?p=381080#381080

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Ron Lendon

Joined: 10 Jan 2006
Posts: 685
Location: Clinton Twp., MI

Posted: Fri Aug 17, 2012 8:08 pm Post subject: Re: Static Port

You won't have the same airspeed as a GPS.  They measure differently.  The pitot system is really an air pressure system.



I placed my two teed static ports behind and below the canopy hinge.  They are connected to both a dynon with AOA pitot and an old style anaolg AI.  They both read the same, even in a slip they provide a reliable indication.



Follow link to see picture



http://mykitlog.com/users/display_log.php?user=rlendon&project=113&category=4167&log=148464&row=26

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