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determining cg

Old 09-12-2008, 11:09 PM
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jjoos99
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Default determining cg

I am putting together a plane that was found in a tree by a local farmer and need to balance it. I dont know what model it is to look it up. It is a sailplane similar to a gentle lady but has a .10 engine on it and the rudder is different. How do i determine what the cg point is on this plane?
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Jeff
Old 09-13-2008, 06:25 AM
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da Rock
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Default RE: determining cg

http://www.geistware.com/rcmodeling/cg_super_calc.htm

This application is basically what's used in the aero industry. You need to do 9 measurements. And make a choice of what Static Margin you want. If you want a range for the CG, run the application twice, just changing the S.M. for each. Run it with 20% S.M. then with 10% and you'll have the CG range.

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