Sökning: "asteroids"

Visar resultat 1 - 5 av 28 uppsatser innehållade ordet asteroids.

  1. 1. Cosmic Dust Detection by the Solar Orbiter Using Machine Learning

    Kandidat-uppsats, Uppsala universitet/Institutet för rymdfysik, Uppsalaavdelningen

    Författare :Joar Lönngren; Ludwig Tiston; [2023]
    Nyckelord :Machine Learning; Neural Network; Cosmic Dust; Solar Orbiter; Space Physics; Space Dust;

    Sammanfattning : This project aims to investigate neural network systems as an effective tool for the in-space captured dust impact signal detection. Cosmic dust is the nanometre to micrometre fine-sized particles that exist in the interplanetary region. They originate from comets, asteroids, the planets and their moons and rings, or even the interstellar region. LÄS MER

  3. 2. Trajectory Optimisation of a Spacecraft Swarm Maximising Gravitational Signal

    Master-uppsats, KTH/Optimeringslära och systemteori

    Författare :Rasmus Maråk; [2023]
    Nyckelord :Spacecraft Swarms; Trajectory Optimisation; Impulsive Manoeuvres; Evolutionary Algorithms; Polyhedral Gravity Model; Small Body Exploration; Discrete Spherical Grids; Svärmande rymdfarkoster; Banoptimering; Impulsiva manövrar; Evolutionära Algoritmer; Polyhedral gravitationsmodell; Utforksning av små kroppar i solsystemet; Diskreta sfäriska rutnät;

    Sammanfattning : Proper modelling of the gravitational fields of irregularly shaped asteroids and comets is an essential yet challenging part of any spacecraft visit and flyby to these bodies. Accurate density representations provide crucial information for proximity missions, which rely heavily on it to design safe and efficient trajectories. LÄS MER

  4. 3. Making Space Exploration Sustainable: A Quantitative Assessment of Valuable Elements for Implementation of In-Situ Utilisation of Lunar Resources

    Master-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Bella Klaus; [2022]
    Nyckelord :Sustainable Development; extra-terrestrial resources; lunar resource mining; in-situ resource utilization; moon; space exploration;

    Sammanfattning : Exploring the Solar System is an ongoing process of humanity that cannot be stopped. It requires large amounts of resources to explore space, which need to be acquired from somewhere. Resources mined on Earth cannot be diverted from vital productions on Earth as those required for energy systems transition and developing a sustainable society. LÄS MER

  5. 4. Assessment of metal contents (Ni, Co and PGEs) in asteroids as a potential source of valuable elements for a future green energy society

    Master-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Chenglu Peng; [2022]
    Nyckelord :Sustainable Development; critical metals; iron meteorites; asteroids exploitation; resources;

    Sammanfattning : The aim of this work is to assess the feasibility of asteroid exploitation as a potential source of valuable elements for a future green energy society and achieving a long-term sustainable development of our society. This research is based on the compilation of chemical data of elements concentration of 13 groups of iron meteorites from literature. LÄS MER

  7. 5. The visibility of double neutron star binaries to LISA

    Kandidat-uppsats, Lunds universitet/Astronomi - Genomgår omorganisation

    Författare :Anatole Storck; [2021]
    Nyckelord :gravitational waves; LISA; neutron stars; orbital simulations; Runge-Kutta method; Physics and Astronomy;

    Sammanfattning : Double neutron star binaries (DNSBs) in the mHz gravitational wave (GW) regime are an important group of objects which the GW detector LISA will be able to observe. The detection and parametrization of these objects will help develop our current understanding of neutron star formation and evolution. LÄS MER