| 摘要 |
PURPOSE:To shorten a time required for submerging and surfacing by forming the body of an unmanned underwater machine in a tear drop shape to set the machine in a horizontal attitude in case of removing the first weight, and to allow it to surface in a vertical, upward attitude with its a head portion being up in case of removing the second weight. CONSTITUTION:A body 1 is formed in a tear drop shape, i.e. a streamline shape, the first weight 4 is fixed to its head portion and the second weight 5 is fixed to its body side portion. And the head portion submerges downward in water under such a condition that the first weight 4 and the second weight 5 are fixed, and the body is in a horizontal and floating attitude under such a condition that the first weight 4 is removed. Further, the body surface in an upward vertical attitude under such a condition that the second weight 5 is also removed. Thereby, a stream friction can be small during submerging and surfacing so that a time required for submerging and surfacing can be shortened and also submerging and surfacing toward a target position can be conducted easily.
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