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Old 02-11-2018, 06:52 PM   #2
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Join Date: Nov 2008
Posts: 978

I'm not sure I can help, but "D3280 P2050" refers to the diameter and pitch in millimeters, so you know that the length from tip to tip is 3.28 meters. The pitch is a mathematical design number, and basically refers to how far forward the prop would travel in one revolution if it were 100% efficient, which it never can be.
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