Sökning: "propulsion unit"

Visar resultat 1 - 5 av 18 uppsatser innehållade orden propulsion unit.

  1. 1. Autonomous Propulsion for a GPR-UGV

    Uppsats för yrkesexamina på avancerad nivå, Umeå universitet/Institutionen för fysik

    Författare :Fredrik Wall Eskilsson; [2022]
    Nyckelord :robotics; gpr; autonomous; robot; ros; slam;

    Sammanfattning : This thesis presents the research and development behind the integration of an autonomous propulsion system for a four-wheeled Ground Penetrating Radar (GPR) measurement unit, previously requiring manual operation. In order to ease the administration of the complex new system, Robot Operating System (ROS) 2 was used as middleware, where an implementation of Light Detection And Ranging (LiDAR) 3D-SLAM (Simultaneous Localization And Mapping) served to secure precise localization of the Unmanned Ground Vehicle (UGV) and mapping of its environment. LÄS MER

  2. 2. 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. 3. Parametric study on hybrid rocket propulsion system performance measured by the system specific impulse

    Master-uppsats, Luleå tekniska universitet/Institutionen för system- och rymdteknik

    Författare :Adam Bussmann; [2022]
    Nyckelord :Hybrid; Hybrid propulsion; Hybrid propulsion system; System specific impulse;

    Sammanfattning : Hybrid rocket motors have become of great international interest during the last couple of years. A hybrid rocket motor is propelled by the use of a solid fuel and a liquid oxidizer. The fundamental principle of the hybrid propelled system is that the liquid oxidizer is injected into a combustion chamber to enable the combustion of the solid fuel. LÄS MER

  4. 4. Hardware-in-the-loop simulation and testing of the ADCS of the Beyond Atlas CubeSat

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Kritee Mahanti; [2021]
    Nyckelord :space; HIL; CubeSat; ADCS; satellites; rymd; HIL; CubeSat; ADCS; satelliter;

    Sammanfattning : Beyond Atlas, a company based in Danderyd, Sweden is working on a Low Earth Orbit (LEO) 3U-CubeSat (Cube Satellite) exploration mission. As part of their maiden mission, they aim to validate the navigation, propulsion, and communication techniques of a CubeSat while it performs orbital maneuvers to collect photographs of space debris. LÄS MER

  5. 5. Greenhouse Gas Emissions Reduction in the Heavy-Duty Transport Sector - A Case Study of Renewable Energy Carriers in Sweden

    Master-uppsats, Lunds universitet/Institutionen för energivetenskaper

    Författare :Karolina André; William Degerstedt; [2021]
    Nyckelord :Battery electric vehicle; Biofuels; Greenhouse gas; Heavy-duty vehicles; LCA; Renewable energy carriers; Renewable fuels; TCO; Transport sector; Well-to-wheel; Technology and Engineering;

    Sammanfattning : Den svenska transportsektorn står för ungefär en tredjedel av landets totala utsläpp av växthusgaser och släppte 2019 ut 16,4 Mt CO2-ekvivalenter. Av dessa står den tunga vägtrafiken för cirka 20 % och är efter passagerarfordonen den största källan till utsläpp av växthusgaser inom sektorn. LÄS MER