The present invention relates to a variable-pitch propeller capable of changing a blade pitch according to the sailing conditions of a ship and, specifically, to a variable-pitch propeller having an optimal hub-to-tip diameter ratio, the propeller being capable of reducing the size of a hub so as to have a high efficiency that is close to the propulsion efficiency of a fixed pitch propeller (FPP). In order to accomplish the aforementioned objective, the present invention relates to a variable-pitch propeller which comprises a hub mounted at the propelling shaft of a ship, and a blade that is mounted at the circumference of the hub and that has a variable pitch, and which is technically characterized by a H/D ratio, of diameter (H) of the propeller and diameter (D) of the hub, of 0.170-0.2.

    La présente invention concerne une hélice à pas variable capable de modifier un pas de pale en fonction des conditions de navigation d'un navire et, de manière spécifique, une hélice à pas variable ayant un rapport de diamètre de moyeu à pointe optimal, l'hélice étant capable de réduire la taille d'un moyeu de manière à avoir une efficacité élevée proche de l'efficacité de propulsion d'une hélice à pas fixe (FPP). Afin d'atteindre l'objectif mentionné ci-dessus, la présente invention concerne une hélice à pas variable comprenant un moyeu monté au niveau de l'arbre de propulsion d'un navire, et une pale montée sur la circonférence du moyeu et ayant un pas variable, et étant techniquement caractérisée par un rapport H/D, du diamètre (H) de l'hélice et du diamètre (D) du moyeu, de 0,170 à 0,2.

    본 발명은 선박의 운항 조건에 따라 블레이드 피치를 변경 가능한 가변 피치 프로펠러에 관한 것으로서, 특히 고정 피치 프로펠러(fixed pitch propeller; FPP)의 추진효율에 근접하는 고효율을 가질 수 있도록 허브의 사이즈를 감소시킬 수 있는 최적의 허브 직경비를 갖는 가변 피치 프로펠러에 관한 것이다. 상기와 같은 목적을 달성하기 위한 본 발명은 선박의 추진축에 장착된 허브와, 허브의 둘레에 장착되며 피치가 가변하는 블레이드를 포함하는 가변 피치 프로펠러로서, 프로펠러의 직경(H)과 허브의 직경(D)에 대한 H/D비가 0.170 내지 0.2인 것을 기술적 특징으로 한다.


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    Title :

    VARIABLE-PITCH PROPELLER HAVING OPTIMAL HUB-TO-TIP DIAMETER RATIO


    Additional title:

    HÉLICE À PAS VARIABLE AYANT UN RAPPORT DE DIAMÈTRE DE MOYEU À POINTE OPTIMAL
    최적의 허브 직경비를 갖는 가변 피치 프로펠러


    Contributors:
    KIM JAE BOO (author) / CHOI CHAN KYU (author) / KIM SUNG HOON (author) / MOON KIL HWAN (author) / KIM DO WAN (author) / SON GWAN HEE (author)

    Publication date :

    2021-11-25


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

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



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