Sökning: "Thruster"

Visar resultat 1 - 5 av 22 uppsatser innehållade ordet Thruster.

  1. 1. 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

  2. 2. Electrostatic ion thrusters for space debris removal

    Kandidat-uppsats, KTH/Skolan för teknikvetenskap (SCI); KTH/Skolan för teknikvetenskap (SCI)

    Författare :Gustav Hedengren; Oscar Larsson; [2018]
    Nyckelord :;

    Sammanfattning : The current levels of space debris are critical and actions are needed to preventcollisions. In this paper it is examined whether an electrostatic ion thruster canbe powerful enough to slow down the debris in a sufficient manner. LÄS MER

  3. 3. 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

  4. 4. Non-linear Model Predictive Control for space debris removal missions

    Master-uppsats, Luleå tekniska universitet/Rymdteknik

    Författare :Alexander Korsfeldt Larsén; [2018]
    Nyckelord :;

    Sammanfattning : The rapidly increasing amounts of space debris orbiting Earth is threatening to reach a critical level, where the near-Earth environment becomes so overfilled with junk that many missions simply become unfeasible. Long-term active debris removal operations appear to be a necessity, but due to the scale of the problem this will likely be an expensive affair spanning decades or even centuries. LÄS MER

  5. 5. Combined Attitude and Orbital MPC for Thruster Based Spacecrafts

    Master-uppsats, KTH/Reglerteknik

    Författare :Joakim Lilja; [2017]
    Nyckelord :;

    Sammanfattning : A spacecraft needs to simultaneously provide orbital and attitude controlbut these are in general treated as separate systems. Normally the attitudecontrol is conducted via reaction wheels but can in scenarios with high manoeuvrabilitydemands be handed over to pure thruster control. LÄS MER