Sökning: "Rymdfarkost"

Visar resultat 11 - 14 av 14 uppsatser innehållade ordet Rymdfarkost.

  1. 11. 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

  3. 12. A Method for Standardization within the Payload Interface Definition of a Service-Oriented Spacecraft using a Modified Interface Control Document​

    Master-uppsats, KTH/Rymdteknik

    Författare :Laura Klicker; [2017]
    Nyckelord :Astrobotic Technologies; Commercialization of Space; Interface Control Document; Interface Definition; Interface Management; Peregrine Lunar Lander; Service-Oriented Space Program; Space Exploration; Space Systems Engineering; Standardization;

    Sammanfattning : With a big picture view of increasing the accessibility of space, standardization is applied within a service-oriented space program. The development of standardized spacecraft interfaces for numerous and varied payloads is examined through the lens of the creation of an Interface Control Document (ICD) within the Peregrine Lunar Lander project of Astrobotic Technologies, Inc. LÄS MER

  4. 13. Solar Cell Current Simulator for a 3U Cube Satellite

    Master-uppsats, KTH/Skolan för elektro- och systemteknik (EES)

    Författare :Simon Callbo; [2016]
    Nyckelord :;

    Sammanfattning : A spacecraft must survive the cold and dark space at the same time it needs to sustain every subsystem with sufficient amount of energy for each of the important scientific experiments on-board. In order for this to work the power system needs to acquire enough energy throughout its mission to power the space craft but also be able to store a sufficient amount of power to endure periods of eclipse and seasonal variations. LÄS MER

  5. 14. Attitude and Orbit Control During Deorbit of Tethered Space Debris

    Master-uppsats, KTH/Farkost och flyg

    Författare :Linus Flodin; [2015]
    Nyckelord :space debris mitigation; deorbit; tethered satellites; mathematical modeling; attitude and orbit control system; LQG control; PID control; switched control;

    Sammanfattning : Due to the unsustainable space debris environment in Low Earth Orbit, debris objects must be removed to ensure future safe satellite operations. One proposed concept for deorbiting larger space debris objects, such as decommissioned satellites or spent upper rocket stages, is to use a chaser spacecraft connected to the debris object by an elastic tether, but the required technology is immature and there is a lack of flight experience. LÄS MER