Weight and balance chart

Hi guys,

I have good of knowledge in computer networking, but I'm in need of something in excel that isn't an easy area for me.


I have a spreadsheet that does some airplane loading calc (weight and balance) and gives me the following data (for example):

Depature weight: 1900; Arm 2,38;

I need to plot the data as a DOT into a specific chart (weight and balance chart) that's found in the airplane manual (see link below).

http://img180.imageshack.us/img180/5503/grafic.jpg

Is it possible ? where should I start ? I saw some examples on the net, but it doesn't describe how to use an image. Can I use this image on background and put the chart limits over it using invisible color ? How do I tell excel to use diagonal lines ?

Any help will be really appreciated. I'm looking for some kind of tutorials. I have more 3 different charts that I need to do the same.

Thanks

Wazzie

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You want to chart airplane loading data into a chart template, so there's a good start for a better title.

... or Weight & Balance Chart

They would all have to be separate series. See, for example, http://www.auf.asn.au/groundschool/umodule9.html.

I'm not sure what all those diagonal lines are in your plot. If you have the data to create a plot like the one above for your a/c, all you need to do is plot TOW vs CG position on the chart to see if you're within CG limits. A separate table can sum the weights and moments for fuel, pilot, copilot, cargo, ...

Sure, all i need is to plot the TOW and ALW vs CG on the chart and print it to archieve (I already have a spreadsheet cel with these numbers, i only need to plot over that image). But i need to use that "custom chart" and if you see the image that i've sent before, the chart is tilted to left on the left side and tilted to right on the right side.. How do I tell excel these "limits" because if it's a simple chart (square) the 2,083 CG will be different in 1000kg and 1550kg..

Thanks

Wazzie

That the CG position is not orthogonal to TOW is problematic. If you have the underlyign data, yoy could recreate it as an ordinary x-y graph like the link I posted.

You could instead crop the picture and use it as the fill in the plot area of an x-y chart, but then you'd need a transformation to convert CG position as a function as TOW so that it plots appropriately.

Welllll -- do you have a table of TOW vs CG position for the a/c?