Re: Weight & Balance
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I'll be doing my W&B this weekend and I've run into a question about the mean aerodynamic cord on a Sonex, which I understand starts on the leading edge of the wing and ends on the trailing edge.
However, given my unconventional engine the tip of my spinner which will be my datum point might be slightly forward compared to the 53" in the manual, hence I need to measure this again to correctly position my MAC and then calculate the corresponding 20-32% MAC positions.
However, which leading edge do I measure to? On the Sonex one wing is positioned slightly forward of the other isn't it? (Can't remember which is the forward one).
Should I measure both and get the average position? (Which would make sense given it's called MEAN aerodynamic cord).
However, given my unconventional engine the tip of my spinner which will be my datum point might be slightly forward compared to the 53" in the manual, hence I need to measure this again to correctly position my MAC and then calculate the corresponding 20-32% MAC positions.
However, which leading edge do I measure to? On the Sonex one wing is positioned slightly forward of the other isn't it? (Can't remember which is the forward one).
Should I measure both and get the average position? (Which would make sense given it's called MEAN aerodynamic cord).