To provide a propeller which is configured to be lightweight, maintains a loop shape during rotation and has low noise, a propeller designing method, a propeller designing method program, and an information storage medium.SOLUTION: A propeller has rotating blades connected around a rotating shaft, each of which includes: a first rotating blade portion having a first blade upper surface and a first blade lower surface and having a sweepback angle; and a second rotating blade portion having a second blade upper surface and a second blade lower surface and having an advance angle. The second blade upper surface is continuous with the first blade lower surface. The second blade lower surface is continuous with the first blade upper surface. The first rotating blade portion and the second rotating blade portion form a loop shape. The shape of at least a part of a central line of the rotating blade, which is formed when the rotating blade is rotated about the rotating shaft, corresponds in at least a partial arbitrary position to the shape of a catenary line such that a tension and a centrifugal force acting in a first direction of the rotating blade are balanced, and such that a tension and a centrifugal force acting in a second direction of the rotating blade are balanced.SELECTED DRAWING: Figure 1

    【課題】軽量に構成され、回転時にループ形状を維持し、低騒音のプロペラ、プロペラの設計方法、プロペラ設計方法プログラム及び情報記憶媒体を提供する。【解決手段】プロペラでは、回転翼が回転軸の周りに接続され、第1翼上面と第1翼下面とを有し後退角を有する第1回転翼部と、第2翼上面と第2翼下面とを有し前進角を有する第2回転翼部とを有する。第2翼上面は、第1翼下面と連なり、第2翼下面は、第1翼上面と連なり、第1回転翼部と第2回転翼部とによってループ形状が形成される。回転翼が回転軸を中心に回転したときに形成される回転翼の中心線の少なくとも一部の形状が少なくとも一部の任意の位置において、回転翼の第1方向に働く張力と遠心力とが調和し、回転翼の第2方向に働く張力と遠心力とが調和した懸垂線形状となる。【選択図】図1


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    Titel :

    PROPELLER, PROPELLER DESIGNING METHOD, PROPELLER DESIGNING METHOD PROGRAM, AND INFORMATION STORAGE MEDIUM


    Weitere Titelangaben:

    プロペラ、プロペラの設計方法、プロペラ設計方法プログラム及び情報記憶媒体


    Beteiligte:
    SHIMA HIDESHI (Autor:in) / TSUTSUMI SEIJI (Autor:in) / FUJIMOTO KEIICHIRO (Autor:in)

    Erscheinungsdatum :

    2019-08-22


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Japanisch


    Klassifikation :

    IPC:    F04D Strömungsarbeitsmaschinen , NON-POSITIVE-DISPLACEMENT PUMPS / B64C AEROPLANES , Flugzeuge



    PROPELLER, PROPELLER DESIGNING METHOD, PROPELLER DESIGNING METHOD PROGRAM, AND INFORMATION STORAGE MEDIUM

    SHIMA EIJI / TSUTSUMI SEIJI / FUJIMOTO KEIICHIRO | Europäisches Patentamt | 2019

    Freier Zugriff

    Vibration problem in aircraft-propeller designing

    Caldwell, F.W. | Engineering Index Backfile | 1937


    PROPELLER CONTROL METHOD, PROPELLER AND COMPUTER READABLE STORAGE MEDIUM

    ZHU QIUYANG / DUAN XUPENG / ZHAO TAO et al. | Europäisches Patentamt | 2023

    Freier Zugriff

    The Vibration Problem in Aircraft-Propeller Designing

    Caldwell, F. W. | SAE Technical Papers | 1937


    PROPELLER AND PROPELLER BLADE

    CÍRUS RÓBERT / NYÍRI ATTILA / CÍRUS NORBERT | Europäisches Patentamt | 2024

    Freier Zugriff