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    • 11. 发明专利
    • Predicting method of route
    • 路线预测方法
    • JPS6193908A
    • 1986-05-12
    • JP21558784
    • 1984-10-15
    • Hitachi Zosen CorpIshikawajima Harima Heavy Ind Co LtdKawasaki Heavy Ind LtdShipbuild Res Assoc JapanSumitomo Heavy Ind Ltd
    • HASHIGUCHI SHINJIMIYAMOTO MASAFUMIKIMATA HISAYUKINOTOKO TANEYASUNITTA TETSUOYOSHIDA TADAOMURASE HIROSHI
    • G08G3/00G01C21/00G01C21/20
    • PURPOSE: To approximate the predicted route of a ship to the actual route and to prevent surely the outbreak of a collision accident, etc. by measuring the 1st position of the ship, the 2nd position next thereto and further the present position next thereto by a means for measuring ship position.
      CONSTITUTION: The 1st position in 2T hours before the present time (t) of the ship is designated as a point P
      0 ', the 2nd position in T hours after the present time (t) as a point P
      1 ' and the present position as a point P
      2 '. The coordinates at the optional X-Y plane of the points P
      0 ', P
      1 ', P
      2 ' are designated respectively as P
      0 '(x
      0 ,y
      0 ), P
      1 '(x
      1 ,y
      1 ), P
      2 '(x
      2 ,y
      2 ). Then the coordinates of the point O' is obtd. by finding the coordinates of the intersected points of the vertical bisectors of the segments connecting respectively the points P
      0 ' and P
      1 ' and the points P
      1 ' and P
      2 ' and the equation for the circle running the points P
      0 ', P
      1 ', P
      2 ' centering at the point O' is derived. The route of the ship exists between the arc C' of the circle and straight line L' given respectively by equation I and equation II, more specifically within the hatched range. The predicted route of the ship is approximated to the actual route and the outbreak of the collision accident, etc. is prevented.
      COPYRIGHT: (C)1986,JPO&Japio
    • 目的:通过测量船舶的第一位置,其旁边的第二位置以及其旁边的当前位置,近似预测的船舶到实际路线的路线,并确保事件爆发事件发生等 测量船位的方法。 构成:将船舶当前时间(t)之前2T小时的第1位置指定为点P0',将当前时间(t)后的T小时中的第2位置指定为点P1',将当前位置指定为 点P2'。 点P0',P1',P2'的可选X-Y平面上的坐标分别表示为P0'(x0,y0),P1'(x1,y1),P2'(x2,y2)。 然后点O'的坐标是可见的。 通过找出分别连接点P0'和P1'以及点P1'和P2'的分段的垂直平分线的相交点的坐标和运行点P0',P1',P2'的圆的圆心的坐标 在点O'被导出。 船舶的路线存在于分别由等式I和等式II给出的圆弧弧C'和直线L'之间,更具体地在阴影线范围内。 船舶的预测路线近似于实际路线,防止了碰撞事故的爆发等。
    • 17. 发明专利
    • PROPULSION DEVICE IN SHIP
    • JPH10264890A
    • 1998-10-06
    • JP7636597
    • 1997-03-28
    • HITACHI SHIPBUILDING ENG CO
    • MIYAMOTO MASAFUMI
    • B63H1/28B63H5/16
    • PROBLEM TO BE SOLVED: To provide a propulsion device in ship which can improve the propeller efficiency. SOLUTION: While a tubular duct 4 with the radius r smaller than the radius Rp of a propeller is provided in the front position of the propeller in a stern, the propeller pitch in the radius position same as the radius position of the duct 4 is made in the minimum value, the propellet pitch at the radius position where the length ratio (r/Rp) to the propeller radius Rp is ±20% by making the radius position as the center, is made in a specific standard design pitch, the propeller pitch at the propeller tip side part where the length ratio is larger than +20%, and at the propeller boss side part where the length ratio is smaller thah -20%, is made larger than the standard design pitch, while in the scope where the length ratio to the propeller radius is smaller than +20%, and larger than -20%, the propeller pitch is made smaller than the standard design pitch.
    • 19. 发明专利
    • WORK BOAT
    • JPH06247378A
    • 1994-09-06
    • JP3380993
    • 1993-02-24
    • HITACHI SHIPBUILDING ENG CO
    • MIYAMOTO MASAFUMITAKENAKA KENSAKUNAKAI YASUO
    • B63B1/08B63H5/16
    • PURPOSE:To cope with small depth of water so as to provide great propulsion by effectively flowing water in and out even if a propulsion propeller is large in diameter. CONSTITUTION:A bow tunnel portion 3f, which slopes upwards from the bow to the stern at thetaf=10 deg.-15 deg. and leads to a propeller portion 3p above the water line WL, and stern tunnels 3R, 3L each of which downwardly slopes astern from the propeller portion 3p at thetae=4 deg.-6 deg. and comprises a stern tunnel portion 3e above the water level WL, are formed at the stern of the hull 1, and the propeller portion 3p is provided with pusher propellers 5R, 5L each of which has a portion that projects above the water line WL. A space portion S which is 5-6% to 0.06 of the diameter D of the propeller is formed between the upper end of each pusher propeller 5R, 5L and the stern tunnel inner surface of the propeller portion 3p, and a sponson portion which projects downwards from the water line WL by 10 to 15% of the diameter D of the propeller is hung down on the side of the propeller portion 3p.