An efficient reverse-thrusting modular propeller combines a center hub and a set of identical and replaceable blades. Each such blade has a radially and laterally symmetrical hydrofoil cross-section but disposed along a full wave (360°) sinusoidal mean camber line. The blades all feature a very strong thicker symmetric hydrofoil cross-section at the propeller root which widens with a longer sinusoidal mean camber line wavelength, and thins in amplitude moving outward, and then the blades narrow again in shorter wavelength and thin more in diminishing amplitudes progressing toward the distal tip. Localized cupping on the leading or trailing edges is ruled-out as undesirable and counterproductive.


    Access

    Download


    Export, share and cite



    Title :

    Efficient reverse thrusting modular propeller


    Contributors:

    Publication date :

    2018-04-17


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING / F04D Strömungsarbeitsmaschinen , NON-POSITIVE-DISPLACEMENT PUMPS



    THRUSTING PANEL

    LEE JUNG RAK / LEE EUN JI | European Patent Office | 2022

    Free access

    Reverse thrusting device based on homopolar electromagnetic field acting force

    LI ZHIWEN | European Patent Office | 2016

    Free access

    ELECTROMAGNETIC THRUSTING SYSTEM

    FETTA GUIDO PAUL | European Patent Office | 2016

    Free access

    ELECTROMAGNETIC THRUSTING SYSTEM

    FETTA GUIDO PAUL | European Patent Office | 2017

    Free access

    WATER JET THRUSTING APPARATUS

    SHITOEV ALEKSANDR VIKTOROVICH | European Patent Office | 2021

    Free access