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Experiments in External Noise Reduction of ... - CAFE Foundation

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...56I?ACATN 2079/40.16-40,35.14 -35.30.12m25.1025 ‘. .-E:a&20Q .08 .Q/m$ .-E+20 aI-a..15.06\1510.0410>5.025000.2 .4 .6 .8 1.0r/R-~ oFigure 12.- Blade-form curves forwide-bladedpropeller(seetableI).h, maximum thiclmess<strong>of</strong> element;b, width (chord)<strong>of</strong> element;r; radius<strong>of</strong> element;R, tipradius;D, diameter <strong>of</strong>propeller;i3’,pitchangle<strong>of</strong>element; BT‘,pitchangle<strong>of</strong> tipelement.....— — ——.

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