Abstract
A centerboard stabilizer from a Laser sailboat was wind-tunnel tested at different surface finish conditions to ascertain the effects on performance. The stabilizer model had an NACA 0009 airfoil section, an aspect ratio of 1.8, and a leading-edge sweep angle of 22 deg. Tests were run at Reynolds numbers of 5.6 x 10 5 and 1.06 × 10 6 , based on the mean aerodynamic chord. Surface finishes of 0.04-0.46 mils (1.0-11.6 μm) rms roughness height were generated by sanding with different grit abrasives and quantified using surface laser scanning techniques
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