Sökning: "marine propulsion system"

Visar resultat 1 - 5 av 10 uppsatser innehållade orden marine propulsion system.

  1. 1. Hydroacoustic Modelling of Podded Propulsion System : Underwater Radiated Noise Prediction Using ANSYS

    Master-uppsats, KTH/Teknisk mekanik

    Författare :Martin Persson; [2022]
    Nyckelord :Fluid Mechanics; Computational Aeroacoustics; Frequency Response; Noise and Vibration; Pod; Propulsion System; ANSYS; Reynolds-Averaged Navier-Stokes Equations; Kongsberg Maritime Sweden AB;

    Sammanfattning : Ocean noise pollution is an invisible but growing threat. There are many sources of sound in the ocean but human underwater radiated noise, in particular from shipping is one of the most prominent one. Ocean noise pollution can interfere or sometimes even directly harm marine life. LÄS MER

  3. 2. Development and study of noise generation from propellers

    Master-uppsats, KTH/Lättkonstruktioner, marina system, flyg- och rymdteknik, rörelsemekanik

    Författare :Anton Anton Dunström; Fredrik Skjernov; [2022]
    Nyckelord :Silent propellers; Propeller development; Noise generation; Skew angle; Blade Area Ratio; Openprop; NATO STANAG no. 1136; Swedish defense and Research Agency FOI ; James Fisher Defense.; Tysta propellrar; Propellerutveckling; Ljudskapande; Skevningsvinkel; Bladtäckningsarea; Openprop; NATO STANAG no. 1136; FOI; James Fisher Defense.;

    Sammanfattning : Noise generation from underwater activities propagates into the marine environment.For marine vessels the propulsion system generates the most noise during itsoperations. Naval vessels that want to operate without being detected want to controlthe sound generating properties of the vessel. LÄS MER

  4. 3. Electrically powered manoeuvring of water jets

    Uppsats för yrkesexamina på grundnivå, Uppsala universitet/Industriell teknik

    Författare :Joel Engström; [2021]
    Nyckelord :Bachelor thesis; Thesis; Mechanical engineering; Uppsala University; Design; Product development; Marine Propulsion; Electrical Actuator; Water Jets; Water Jet Propulsion; Water Jet Manouvering; Steer-by-wire; Marine Technology; Examensarbete; Maskinteknik; Kandidatuppsats; Uppsala Universitet; Konstruktion; Design; Produktutveckling; Vattenjet; vattenjetaggregat; Elektrisk Manövrering; Steer-by-wire; Marinteknik;

    Sammanfattning : A shift towards electric and hybrid propulsion within the marine sector create new challenges for conventional water jet units manoeuvred by hydraulic systems. The high efficiency in high speed water jet crafts benefit from being powered by electricity but will be compromised by constantly running hydraulic pumps, draining available electric capacity on-board. LÄS MER

  5. 4. Evaluation of transition towards zero emission commuter ferries : Comparative Analysis of Fuel-based and Battery-based Marine Propulsion System from financial and environmental perspectives

    Master-uppsats, KTH/Marina system

    Författare :Varun Goel; Sonja Wadelius; [2021]
    Nyckelord :Water-borne public transport; Maritime industry; marine propulsion system; marine Li-ion batteries; diesel-electric; diesel-mechanical; all-electric; life cycle assessment; cost assessment.; Vattenburenkollektivtrafik; marinaindustrin; marinaframdrivningssystem; marinabatterisystem; dieselelektrisk; diesel mekanisk; helt elektrisk; livscykelanalys; kostnadsanalys.;

    Sammanfattning : The purpose of this study is to compare the life-cycle cost and environmental impact of the existing fuel-based propulsion system, on public commuter ferries in Stockholm, with a battery based propulsion system. The study is divided into multiple layers. LÄS MER

  7. 5. The Interconnectedness of Relationships for a Propulsion and Maneuvering System : A case study with a supplier network perspective in the maritime industry

    Master-uppsats, Uppsala universitet/Institutionen för samhällsbyggnad och industriell teknik

    Författare :Johan Grönberg; [2021]
    Nyckelord :management; business networks; industrial marketing; relationship marketing; value-drivers; connectedness;

    Sammanfattning : The purpose of this case study is to understand how actors interact from a supplier perspective within the marine business, discuss what the findings are implying, and develop a marketing strategy for a propulsion and maneuvering system. Industrial marketing is an essential activity for companies to delivering and managing value to their stakeholders. LÄS MER