PROBLEM TO BE SOLVED: To effectively suppress thrust breakdown.SOLUTION: In a propeller (1) of the present invention, such shape change parts (21 and 22) that front and back sides (15) and (16) of a blade become higher than parts (23 and 24) continuing into the side of a rear edge are provided on the side of the rear edge (14) in the rotational direction of a plurality of blades (12) provided on the outer periphery of a propeller boss. This restrains thrust breakdown from being caused by cavitation.

    【課題】スラストブレークダウンを効果的に抑制すること。【解決手段】本発明のプロペラ(1)を、プロペラボスの外周に設けられた複数枚のブレード(12)の回転方向における後縁(14)側に、この後縁側に連なる部分(23、24)よりもブレードの表面(15)及び裏面(16)の高さを増加させるような形状変化部(21、22)を設けて、キャビテーションによって引き起こされるスラストブレークダウンを抑制する構成にした。【選択図】図3


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    Title :

    PROPELLER AND THRUSTER


    Additional title:

    プロペラ及び推進器


    Contributors:

    Publication date :

    2015-11-16


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING



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