Development of forces around a hydrofoil appendage of a sailing boat

A set of towing tank tests was undertaken on a 1:4-model-scale high-performance small sailing boat, which was a candidate for the 2016 Olympic games. The resistance, sink and trim were measured and uncertainty analysis was completed. The boat was tested for different longitudinal positions of the crew in displacement, transition and fully planning regimes. The resistance measurements in the towing tank were well correlated with established empirical formulations developed for planning hulls. It was found that at low Froude numbers, forward crew positions allow lower resistance and resistance increases significantly for after crew positions, while at higher Froude numbers after positions allow lower resistance, and the resistance is less sensible to the crew position. These findings are in agreement with sailor experience and with measurements performed by other authors on large vessels.

Download Full-text

A novel methodology for sailing boat waterline plane definition using 3D point cloud

2017 Panhellenic Conference on Electronics and Telecommunications (PACET) ◽

10.1109/pacet.2017.8259977 ◽

2017 ◽

Author(s):

Kleanthis Xenitidis ◽

Vassilios Mardiris ◽

Vassilios Chatzis

Keyword(s):

Point Cloud ◽

3D Point Cloud ◽

Sailing Boat

Download Full-text

On rationalizing the accumulation of medical experience

Kazan medical journal ◽

10.17816/kazmj49985 ◽

1930 ◽

Vol 26 (2) ◽

pp. 181-187

Author(s):

M. I. Mastbaum

Keyword(s):

Medical Experience ◽

Sailing Boat

I was born in Moscow in 1863 at the turn of 2 eras. I still remember the remnants of serfdom, tallow candles, kerosene lamps, tarantases, dormitories, relay races, flintlock guns, small cannons that looked like toys. Before my eyes, railways with courier trains, steamships were emerging in Russia, electric searchlights, automobiles, airplanes, dreadnoughts, submarines, telephones wire, wireless, radio telegraphs, 12-inch guns were created. Thus, from a tallow candle to an electric searchlight, from a tarantass to an airplane, from a sailing boat to a submarine, from a gun to Berthe's cannon, and from serfdom to Bolshevism and communism "(Stanislavsky" My Life in Art ").

Download Full-text