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Fwd: TAS Calculator.xlsx

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jesse(at)saintaviation.co
Guest

Posted: Sat May 23, 2015 11:45 am Post subject: Fwd: TAS Calculator.xlsx

See below. 



Jesse Saint

Saint Aviation, Inc.

352-427-0285

jesse(at)saintaviation.com (jesse(at)saintaviation.com)

Sent from my iPad



Begin forwarded message:

 	  Quote: 	
		  From: Chris Golden <chris(at)blueones.com (chris(at)blueones.com)>

Date: May 23, 2015 at 3:36:21 PM EDT

To: Saint Jesse <jesse(at)saintaviation.com (jesse(at)saintaviation.com)>

Subject: TAS Calculator.xlsx

	


 	  Quote: 	
		  Not sure if this is the one he is looking for, but it's what we used and seemed about right. 



	
  	  Quote:

TAS_Calculator.xlsx

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flysrv10(at)gmail.com
Guest

Posted: Sat May 23, 2015 11:58 am Post subject: Fwd: TAS Calculator.xlsx

Thanks Jesse. I was looking for indicated airspeed calculation. I have two sources of AS and they are 10+ kt different. 



Sent from my iPhone



On May 23, 2015, at 3:42 PM, Jesse Saint <jesse(at)saintaviation.com (jesse(at)saintaviation.com)> wrote:

[quote]See below. 



Jesse Saint

Saint Aviation, Inc.

352-427-0285

jesse(at)saintaviation.com (jesse(at)saintaviation.com)

Sent from my iPad



Begin forwarded message:

 	  Quote: 	
		  From: Chris Golden <chris(at)blueones.com (chris(at)blueones.com)>

Date: May 23, 2015 at 3:36:21 PM EDT

To: Saint Jesse <jesse(at)saintaviation.com (jesse(at)saintaviation.com)>

Subject: TAS Calculator.xlsx

	


 	  Quote: 	
		  Not sure if this is the one he is looking for, but it's what we used and seemed about right. 



	


<TAS Calculator.xlsx>

 	  Quote: 	
		  



	


[b]

Tim Olson

Joined: 25 Jan 2007
Posts: 2879

Posted: Sat May 23, 2015 2:42 pm Post subject: Fwd: TAS Calculator.xlsx

I don't think you can very accurately calculate indicated airspeed.  The best way to check that is on the bench.  That's the reference for all the others.

If indicated is off, it's time to use the manometer and figure out which one is accurate.

Tim





On May 23, 2015, at 2:55 PM, Flysrv10 <flysrv10(at)gmail.com (flysrv10(at)gmail.com)> wrote:

[quote]Thanks Jesse. I was looking for indicated airspeed calculation. I have two sources of AS and they are 10+ kt different. 



Sent from my iPhone



On May 23, 2015, at 3:42 PM, Jesse Saint <jesse(at)saintaviation.com (jesse(at)saintaviation.com)> wrote:

 	  Quote: 	
		  See below. 



Jesse Saint

Saint Aviation, Inc.

352-427-0285

jesse(at)saintaviation.com (jesse(at)saintaviation.com)

Sent from my iPad



Begin forwarded message:

 	  Quote: 	
		  From: Chris Golden <chris(at)blueones.com (chris(at)blueones.com)>

Date: May 23, 2015 at 3:36:21 PM EDT

To: Saint Jesse <jesse(at)saintaviation.com (jesse(at)saintaviation.com)>

Subject: TAS Calculator.xlsx

	


 	  Quote: 	
		  Not sure if this is the one he is looking for, but it's what we used and seemed about right. 



	


<TAS Calculator.xlsx>

 	  Quote: 	
		  



	






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List"">http://www.matronics.com/Navigator?RV10-List

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//forums.matronics.com

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ot;">http://www.matronics.com/contribution

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[b]

n801bh(at)netzero.net
Guest

Posted: Sat May 23, 2015 3:50 pm Post subject: Fwd: TAS Calculator.xlsx

Agreed.....

 

Easy to do,,, Well tested and accepted data to derive an accurate reading...

 

http://www.rst-engr.com/rst/articles/KP89JUL.pdf

 

 

Ben Haas

N801BH

www.haaspowerair.com



--------

flysrv10(at)gmail.com
Guest

Posted: Sat May 23, 2015 6:12 pm Post subject: Fwd: TAS Calculator.xlsx

Thanks guys. This article will do. 

Kit plane mag had an articles in Feb with a spreadsheet that used gps data to come up with errors. It is called a multipoint gps assisted AS calibration. Do not have subscription to access the file. 

Seemed like a good lazy alternative  to do it with. 

Do not archive. 



Sent from my iPhone



On May 23, 2015, at 4:43 PM, Ben <n801bh(at)netzero.net (n801bh(at)netzero.net)> wrote:

[quote]Agreed.....

 

Easy to do,,, Well tested and accepted data to derive an accurate reading...

 

http://www.rst-engr.com/rst/articles/KP89JUL.pdf

 

 

Ben Haas

N801BH

www.haaspowerair.com



--------

carl.froehlich(at)verizon
Guest

Posted: Sat May 23, 2015 6:15 pm Post subject: Fwd: TAS Calculator.xlsx

Here is a PDF file with a scale that translates inches of water to knots.  This simple rig is very accurate.  It also serves to find pitot/static leaks before you have the guy on the clock doing your biannual check.



Carl

 

From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of Ben

Sent: Saturday, May 23, 2015 7:44 PM

To: rv10-list(at)matronics.com

Subject: Re: Fwd: TAS Calculator.xlsx



 

Agreed.....



 



Easy to do,,, Well tested and accepted data to derive an accurate reading...



 



http://www.rst-engr.com/rst/articles/KP89JUL.pdf



 



 



Ben Haas

N801BH

www.haaspowerair.com



--------

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Manometer.pdf

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Tim Olson

Joined: 25 Jan 2007
Posts: 2879

Posted: Sat May 23, 2015 6:37 pm Post subject: Fwd: TAS Calculator.xlsx

This is just a guess since I don't read kit planes, but GPS is used along with IAS and pressure/temp to calculate your TAS. I don't think GPS would be much good for calculating IAS unless you knew very precisely the winds you are flying in.

Tim





On May 23, 2015, at 9:09 PM, Flysrv10 <flysrv10(at)gmail.com (flysrv10(at)gmail.com)> wrote:

[quote]Thanks guys. This article will do. 

Kit plane mag had an articles in Feb with a spreadsheet that used gps data to come up with errors. It is called a multipoint gps assisted AS calibration. Do not have subscription to access the file. 

Seemed like a good lazy alternative  to do it with. 

Do not archive. 



Sent from my iPhone



On May 23, 2015, at 4:43 PM, Ben <n801bh(at)netzero.net (n801bh(at)netzero.net)> wrote:

[quote]Agreed.....

 

Easy to do,,, Well tested and accepted data to derive an accurate reading...

 

http://www.rst-engr.com/rst/articles/KP89JUL.pdf

 

 

Ben Haas

N801BH

www.haaspowerair.com



--------

Bob Turner

Joined: 03 Jan 2009
Posts: 885
Location: Castro Valley, CA

Posted: Sat May 23, 2015 7:25 pm Post subject: Re: Fwd: TAS Calculator.xlsx

There are several programs available where you fly 3 different courses, note GPS ground speeds, and the program calculates True airspeed, with the assumption that the wind does not change while you make the measurements. Truth be told, you can do just as well by finding the wind direction (max ground speed), then do a 180 (minimum ground speed), and average the 2 numbers to get TAS. Note the pressure altitude and the OAT, pull out your E6B and change TAS into IAS.



Water manometer is a good place to start, but it won't show static errors.

_________________
Bob Turner
RV-10 QB

n801bh(at)netzero.net
Guest

Posted: Sat May 23, 2015 8:12 pm Post subject: Fwd: TAS Calculator.xlsx

I do a pitot /static test on every third transponder check.. ie, every six years.... The guy has the equipment already set up and it only adds 50 bucks to the bill... And his test rig is certified.....

 

Well worth it to me...  YMMV...

 

 

Ben Haas

N801BH

www.haaspowerair.com



--------

flysrv10(at)gmail.com
Guest

Posted: Wed May 27, 2015 7:04 am Post subject: Fwd: TAS Calculator.xlsx

Thanks guys for all the resources. My Gimini and AFS don't agree by 10kts so need to do something soon. 

Do not archive. 



Sent from my iPhone



On May 23, 2015, at 9:08 PM, Ben <n801bh(at)netzero.net (n801bh(at)netzero.net)> wrote:

[quote]I do a pitot /static test on every third transponder check.. ie, every six years.... The guy has the equipment already set up and it only adds 50 bucks to the bill... And his test rig is certified.....

 

Well worth it to me...  YMMV...

 

 

Ben Haas

N801BH

www.haaspowerair.com



--------

Kelly McMullen

Joined: 16 Apr 2008
Posts: 1188
Location: Sun Lakes AZ

Posted: Wed May 27, 2015 9:07 pm Post subject: Fwd: TAS Calculator.xlsx

Are they both connected to the pitot static system or does one just give you GPS speed? If they use the pitot static, and the plumbing is leak free, there is a calibration issue with one of them.



You can check the airspeed on the ground with a water manometer.

http://www.eaa1000.av.org/technicl/instcal/instcal.htm

On Wed, May 27, 2015 at 7:59 AM, Flysrv10 <flysrv10(at)gmail.com (flysrv10(at)gmail.com)> wrote:

[quote]Thanks guys for all the resources. My Gimini and AFS don't agree by 10kts so need to do something soon.Â 

Do not archive.Â 



Sent from my iPhone



On May 23, 2015, at 9:08 PM, Ben <n801bh(at)netzero.net (n801bh(at)netzero.net)> wrote:

[quote]I do a pitot /static test on every third transponder check.. ie, every six years.... The guy has the equipment already set up and it only adds 50 bucks to the bill... And his test rig is certified.....

Â 

Well worth it to me...Â  YMMV...

Â 

Â 

Ben Haas

N801BH

www.haaspowerair.com



--------

_________________
Kelly McMullen
A&P/IA, EAA Tech Counselor
KCHD

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