| 摘要 |
PROBLEM TO BE SOLVED: To provide a hydrofoil for speeding up a ship, which satisfies both longitudinal and horizontal stability of the hull during sailing and horizontal stability on starting to sail at the same time, and is easy to install. SOLUTION: High speed sailing is enabled by floating the hull with lift generated by submersible main wings 3, 5 installed near and behind a center of gravity of the hull and reducing resistance of the hull. Planing balance wings 7, 9 of a bow part are installed to plane on a water surface after floating, and a longitudinal posture of the hull is stabilized by utilizing lift of this planing body. By installing the planing balance wings to the starboard and the port side independently, rolling restoring moment works, and the hull smoothly floats by suppressing the rolling generated on sailing start. As a dihedral angle between the main wings 3, 5 are set to be large from 10°-45°, if the hull inclines horizontally, wing lifts of the starboard and the port side become different, the restoring force to return to an original state works and horizontal stability of the hull is secured. The hydrofoils can be easily installed even to a conventional ship by separately installing them to the starboard and the port side, respectively, like the starboard main wing 3 and the port side main wing 5. COPYRIGHT: (C)2009,JPO&INPIT
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