Sökning: "thrusters"

Visar resultat 1 - 5 av 8 avhandlingar innehållade ordet thrusters.

  1. 1. Sense, Actuate and Survive : Ceramic Microsystems for High-Temperature Aerospace Applications

    Författare :Peter Sturesson; Greger Thornell; Lena Klintberg; Peter Bull; Pelle Rangsten; Uppsala universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; High temperature; ceramics; microsystems; aerospace; sensors; thrusters; Teknisk fysik med inriktning mot mikrosystemteknik; Engineering Science with specialization in Microsystems Technology; Försvarssystem;

    Sammanfattning : In aerospace applications, but also in manufacturing, mining, energy industry and natural hazards, high temperature, corrosion, erosion and radiation, challenge the performance and being of hardware.In this work, high-temperature co-fired ceramic (HTCC) alumina and platinum have been used for a range of devices intended for aerospace applications at up to 1000°C. LÄS MER

  3. 2. High-Temperature Microfluidics for Space Propulsion

    Författare :Ville Lekholm; Klas Hjort; Anders Persson; Lena Klintberg; Herbert Shea; Uppsala universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Teknisk fysik med inriktning mot mikrosystemteknik; Engineering Science with specialization in Microsystems Technology;

    Sammanfattning : In this thesis, microfabrication methods and tools for analysis of heated cold-gas microthrusters are presented, with the aim of improving their reliability and performance. Cold-gas thrusters operate by accelerating pressurized gas through a nozzle. LÄS MER

  4. 3. Mutual neutralisation reactions in atmospheric and industrial plasmas

    Författare :Mathias Poline; Richard D. Thomas; Jan Pettersson; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; DESIREE; mutual neutralisation; ion storage; ion collisions; Physics; fysik;

    Sammanfattning : This thesis deals with experimental studies of electron transfer reactions between oppositely charged ions (mutual neutralisation). These were performed at the unique double electrostatic ion storage ring DESIREE at Stockholm University, which was put into full operation in 2017. LÄS MER

  5. 4. Development of Microcomponents for Attitude and Communication Systems on Small Vehicles in Space and Extreme Environments

    Författare :Kristoffer Palmer; Greger Thornell; Hugo Nguyen; Henrik Kratz; Uppsala universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Administrative Law; Förvaltningsrätt;

    Sammanfattning : In this thesis, components intended for vehicles in space and other extreme environments have been realized using microsystems technology to facilitate miniaturized, yet high-performing systems beneficial for small spacecraft and other vehicles with limited size and power.Cold gas thrusters commonly used on spacecraft basically accelerate a gaseous propellant stored under high pressure. LÄS MER

  7. 5. Bringing Silicon Microsystems to Space : Manufacture, Performance, and Reliability

    Författare :Johan Köhler; Gert Andersson; Uppsala universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Space technology; Rymdteknik; Space engineering; Rymdteknik; teknisk fysik med inriktningen mikrosystemteknik; engineering science with specialization in microsystems technology;

    Sammanfattning : The incorporation of extremely compact multifunctional microsystems is a highly profitable long-term approach in spacecraft design. These systems bring substantial launch-cost reductions, and enable exciting space exploration and science missions.Silicon microsystems technology is an adequate choice for the multifunctional microsystem development. LÄS MER