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Looking For W&B Using Arm Instead of Moment



 
 
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  #1  
Old October 30th 03, 12:41 PM
John T
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Default Looking For W&B Using Arm Instead of Moment

I'm looking for an example of a W&B worksheet using CG arm values instead of
moment values. Basically, I'm curious to see how these are done and what
the worksheets look like.

Either online or emailed examples are acceptable.

Thanks!

--
John T
tknoflyer[remove] at hotmail[remove].com
http://tknowlogy.com/tknoFlyer
_______________



  #2  
Old October 30th 03, 05:18 PM
Orval Fairbairn
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Default

In article om,
"John T" wrote:

I'm looking for an example of a W&B worksheet using CG arm values instead of
moment values. Basically, I'm curious to see how these are done and what
the worksheets look like.

Either online or emailed examples are acceptable.

Thanks!


If you can use Excel, you can easily construct your own W&B worksheet.

Put the weight of each component in column "A", its arm in column "B",
its resultant moment in column "C".

All you have to do is multiply column "A" by column "B" in coulmn "C",
add the sum of columns "A" and "C", divide the sum of column "C" by the
sum of column "A" and you have the CG in column "B".

You can get better by adding fuel in gallons, converting it to lbs in
the weight computation, oil in qts, converting it, etc.

You can build pax/fuel loading scenarios and get a real handle on what's
going on.

It is really quite elementary.

A year ago I helped a retired AA captain build a W&B program for his
plane -- it really opened his eyes!
  #3  
Old October 30th 03, 10:44 PM
Karl Medcalf
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Default

I wrote a weight & balance program some time ago that will display the
envelope either way. If you're interested in looking at it, you can
find it at http://users3.ev1.net/~medcalf/avinfo.html

As noted, I accept no liability for use of the program, as you are
still responsible to properly calculate weight & balance for your
specific plane.

Enjoy.


On Thu, 30 Oct 2003 12:41:30 GMT, "John T" wrote:

I'm looking for an example of a W&B worksheet using CG arm values instead of
moment values. Basically, I'm curious to see how these are done and what
the worksheets look like.

Either online or emailed examples are acceptable.

Thanks!

--
John T
tknoflyer[remove] at hotmail[remove].com
http://tknowlogy.com/tknoFlyer
_______________




Karl Medcalf - WK5M
PP-ASEL-IA (N43CS)

  #4  
Old November 1st 03, 08:19 PM
John Godwin
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Default

(Karl Medcalf) wrote in
:

I wrote a weight & balance program some time ago that will display the
envelope either way. If you're interested in looking at it, you can
find it at
http://users3.ev1.net/~medcalf/avinfo.html

As noted, I accept no liability for use of the program, as you are
still responsible to properly calculate weight & balance for your
specific plane.

Enjoy.


I've downloaded and used Karl's program. I have it running on Windows 2000
Professional and am quite impressed. I highly recommend it.

--
John Godwin
Silicon Rallye Inc.
  #5  
Old October 31st 03, 12:17 AM
Verbs Under My Gel
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Default

"John T" wrote in message ews.com...
I'm looking for an example of a W&B worksheet using CG arm values instead of
moment values. Basically, I'm curious to see how these are done and what
the worksheets look like.

Either online or emailed examples are acceptable.

Thanks!


Moment is the vector product of force (weight) and displacement
(distance, or "arm"), in other words, F X S
 




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