Sökning: "Satellite Wall"

Hittade 5 uppsatser innehållade orden Satellite Wall.

  1. 1. Optimisation of the gas atomisation process used in aluminium powder production : To improve morphology by minimising satellite formations

    Kandidat-uppsats, KTH/Materialvetenskap

    Författare :Henrik Hedlin; Johan Nymo; [2023]
    Nyckelord :;

    Sammanfattning : There exists a lack of information and an exact understanding of the gas atomisation process resulting in the use of trial and error methods in the industry. The lack of information is the result of the difficulties in observing the actual process as it occurs, something that the use of computational fluid dynamics may be able to substitute. LÄS MER

  3. 2. FORESAIL-2 AOCS Trade Studies and Design

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

    Författare :Guillaume Le Bonhomme; [2020]
    Nyckelord :space engineering; CubeSat; ADCS; AOCS; spacecraft subystems; nanosatellite;

    Sammanfattning : This thesis aims to design a reliable CubeSat platform, including the avionic subsystems that can sustain a high radiation environment for a mission having a lifetime of at least six months. The science instruments put stringent requirements on the platform to achieve and maintain the desired spin rate. LÄS MER

  4. 3. Detaljmätning med terrester fotogrammetri : Med smartphone, bildrover och multistation

    Kandidat-uppsats, Högskolan i Gävle/Samhällsbyggnad, GIS

    Författare :Johannes Nyström; Hampus Tholander; [2018]
    Nyckelord :Terrester fotogrammetri; Detaljmätning; Trimble V10 Imaging Rover; Trimble SX10; iPhone 7;

    Sammanfattning : Detaljmätning genomförs främst genom traditionella metoder, d.v.s. mätning med Global Navigation Satellite System (GNSS) eller totalstationsmätning. LÄS MER

  5. 4. Constrained Low-Thrust Satellite Formation-Flying Using Relative Orbit Elements : Autonomous Guidance and Control for the NetSat Satellite Formation-Flying Mission

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

    Författare :Lukas Steindorf; [2017]
    Nyckelord :satellite; formation; control; guidance; continuous; low-thrust;

    Sammanfattning : This thesis proposes a continuous low-thrust guidance and control strategy for satellite formation-flying. Stabilizing feedback based on mean relative orbit elements and Lyapunov theory is used. A novel feedback gain matrix inspired by the fuel-optimal impulsive solution is designed to achieve near-optimal fuel consumption. LÄS MER

  7. 5. Välfärdsstaten i tre post-kommunistiska stater: konservativ, liberal eller socialdemokratisk? En studie av socialpolitikens utveckling i Tjeckien, Polen och Ungern efter 1989

    Kandidat-uppsats, Lunds universitet/Statsvetenskapliga institutionen

    Författare :Madeleine Lundin; [2006]
    Nyckelord :Welfare regimes; social policy; post-Communist; The Czech Republic; Poland; Hungary; Esping-Andersen; Gøsta.; Political and administrative sciences; Statsvetenskap; förvaltningskunskap; Social problems and welfare; national insurance; Sociala problem; social välfärd; socialförsäkring; Law and Political Science;

    Sammanfattning : After the fall of the Berlin Wall in 1989 the satellite states of the former Communist bloc immediately departed on a journey towards democracy and market capitalism. Among the many tasks of the newly elected governments, one was to transform the paternalist Communist welfare state into a social system that would decrease the oversized role of the state, at the same time as protecting the citizens from the hardships ensued from the transition. LÄS MER