A theoretical and experimental study was conducted to determine the feasibility of using gas injection to augment the thrust of a waterjet propulsor. The study was specifically directed towards advanced ship waterjet propulsion systems with the goal of attaining increased thrust at low ship speeds (e.g. for takeoff of hydrofoils). Experimental data presented include high-pressure scale-model (up to 1400 kPa) gas injection results, showing the influence of injector type and design, and the effects of gas injection on full-scale waterjet pump performance. Test results are compared to an existing theoretical analysis and applied to the case of a 230-metric-ton waterjet-propelled hydrofoil ship. The validity of the analysis is defined over a wide range of parameters and for several configurations. Recommendations are made for application of the concept and for future work. (Peters)


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    Title :

    Waterjet thrust augmentation by gas injection


    Additional title:

    Schubverstaerkung bei Wasserstrahlen durch Gasinjektion


    Contributors:


    Publication date :

    1978


    Size :

    11 Seiten, 9 Bilder, 3 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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