Sökning: "Elektrisk Framdrivning"

Visar resultat 1 - 5 av 7 uppsatser innehållade orden Elektrisk Framdrivning.

  1. 1. Robust attitude control of a spacecraft with flexible dynamics

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

    Författare :Francesco Giuliano; [2019]
    Nyckelord :;

    Sammanfattning : The employment of Electrical Propulsion, to reduce the cost of satellites, has also increasedthe use of large solar arrays. Such solar panels are associated with low-frequency resonantmodes, and to ensure fine pointing of the satellite, the attitude control should not excitethese modes. LÄS MER

  2. 2. PPS5000 Thruster Emulator Architecture Development & Hardware Design

    Master-uppsats, Luleå tekniska universitet/Rymdteknik

    Författare :Robert Persson; [2019]
    Nyckelord :Electric Propulsion; Spacecraft; Ground Support Equipment; OHB Sweden; Emulator; Thruster; Elektrisk Framdrivning; Rymdfarkost; Markutrustning; Testutrustning;

    Sammanfattning : This Master's Thesis handles prestudy work and early hardware development that resulted in architectural definitions and prototype hardware of electronic ground support equipment. This equipment is destined to emulate the electric power consumption of the PPS5000 Hall Effect Thruster (HET), for use in satellite end-to-end tests of the all-electric Geostationary Satellite Electra, developed at OHB Sweden AB. LÄS MER

  3. 3. Robust post impact vehicle motion control using torque vectoring

    Master-uppsats, KTH/Fordonsdynamik

    Författare :Nikhil Jain; [2019]
    Nyckelord :;

    Sammanfattning : Several statistical studies have suggested that the risk of injury is significantly higher in multiple event accidents (MEAs) than in single event crashes. Improper driving in such scenarios leads to hazardous vehicle heading angles and excessive lateral deviations from thevehicle path, resulting in severe secondary crashes. LÄS MER

  4. 4. Numerical simulation of the electric propulsion’s effects on the spacecraft

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

    Författare :David Nguyen van Sang; [2018]
    Nyckelord :;

    Sammanfattning : As electric propulsion is now the focus in the space industry, its negativeeffects on the spacecraft have yet to be fully understood. Indeedthis type of propulsion deeply modifies the ambient plasma surroundingthe spacecraft and can affect severely many subsystems by erosion,charging or contamination. LÄS MER

  5. 5. Eldrift inom skärgårdstrafiken : Ekonomiskt försvarbart eller en ren förlustaffär?

    M1-uppsats, Linnéuniversitetet/Sjöfartshögskolan (SJÖ); Linnéuniversitetet/Sjöfartshögskolan (SJÖ)

    Författare :David Niklasson; Nicklas Karlsson; [2016]
    Nyckelord :Hybrid; Battery propulsion; Archipelago; Koster Marin; Conversion; Kosterbris; Hybriddrift; Batteridrift; Skärgårdstrafik; Koster Marin; Konvertering; Kosterbris;

    Sammanfattning : Allt eftersom tekniken utvecklas blir elektrisk framdrift ett adekvat alternativ till konventionellt dieselmaskineri, särskilt inom den svenska skärgårdstrafiken eftersom det ofta handlar om korta distanser. En av de allra viktigaste faktorerna vid ett nybygge eller en konvertering av ett fartyg är kostnaden. LÄS MER