| 摘要 |
PROBLEM TO BE SOLVED: To provide a sailing boat capable of converting the wind energy into a propelling energy with a high efficiency and maximizing the propulsive force in sailing. SOLUTION: The sailing boat is equipped with a computation control device 20 having a computation part 21 which is fed with the relative wind speed U<SB>wr(h1)</SB>and the relative wind directionΨ<SB>wr(h1)</SB>of the pole top given by an anemometer installed at the top of the pole of the sailing boat. Further the sailing boat is fed with the to-the-ground speed U<SB>s</SB>and the advancing directionΨ<SB>s</SB>of the hull from a GPS etc. installed as ordinary provision. The computation part 21 calculates the relative wind direction and wind speed over the height direction and emits them to a command part 22, which calculate the height direction optimum distribution of the sail angle and emits the result to an actuator 25 for the sail. Thereby the height direction distributions of the relative wind direction and wind speed of the winds which the sailing boat receives are acquired, and according to the obtained relative wind speed/wind direction distribution, the angle of the sail is adjusted on the basis of the result from computing the optimum elevation angle of different parts of the sail over the height direction, and thereby the maximum propulsive force can be obtained. COPYRIGHT: (C)2005,JPO&NCIPI
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