Presses universitaires de Louvain onixsuitesupport@onixsuite.com 20260816 eng

COM.ONIXSUITE.9782390613299 03 01 Presses universitaires de Louvain 01 SKU 104813 02 2390613292 03 9782390613299 15 9782390613299 10 BC 00 Thèses de la Faculté des sciences 672 01 GCOI 29303100809320 1 A01 Matthias Noeker Noeker, Matthias Matthias Noeker <p>Since 2019, Matthias Noeker is an Aerospace Engineer and PhD Researcher at the RoyalObservatory of Belgium and the Université catholique de Louvain. Before moving toBelgium, Matthias Noeker graduated from Delft University of Technology with the degreeof Master of Science (M.Sc. – cum laude) in Aerospace Engineering. Here, he specialisedin the Master's track Spaceflight and the profile Space Exploration. A first link with hiscurrent work was made at Queen’s University. Matthias Noeker followed a Dual AwardUndergraduate Programme in Mechanical Engineering and graduated from the Universityof Siegen (B.Sc.) and the University of Portsmouth (BEng (Hons)).</p> 01 eng 288 00 288 03 SCI000000 P 29 2012 3051 SCIENCES FONDAMENTALES 10 SCI005000 10 SCI055000 12 PG 12 PGG 24 INTERNET Astronomie et géophysique 24 INTERNET Sciences exactes 24 INTERNET Physique 29 juillet 2013 4119 Astrophysique 01 06 01 <p>The two planetary defense ESA Hera and NASA DART missions aim at demonstrating asteroid deflection capabilities. The former will follow the latter to the binary asteroid system Didymos. One payload of the Hera mission is the GRAvimeter for small Solar System bodies (GRASS) to land on Dimorphos for in-situ surface gravimetry. This will be the first-ever extraterrestrial surface gravimeter experiment on a small body. The present PhD thesis contributed to this novel instrument development, from early prototyping to the final instrument flight model (FM), scheduled for launch in 2024. The preparation of gravimeters to any celestial target, but moreso the interpretation of the finally returned data to Earth, demand excellent (surface) gravity simulations. Especially on small, generally non-spherical, bodies, this is non-trivial and ddressed further in this work. Different contributions to gravity and the different existing gravitation modelling methods are introduced. Then, a comparison of three of these methods is performed, and the surface gravity for different cases, including Hera's target, are simulated. Finally, zooming in from the global to the local scale, the novel Wedge-Pentahedra Method (WPM) is presented, allowing to account for local topography surrounding a gravimeter measurement location and influencing the measurement.</p> 03 <p>The two planetary defense ESA Hera and NASA DART missions aim at demonstrating asteroid deflection capabilities. The former will follow the latter to the binary asteroid system Didymos. One payload of the Hera mission is the GRAvimeter for small Solar System bodies (GRASS) to land on Dimorphos for in-situ surface gravimetry. This will be the first-ever extraterrestrial surface gravimeter experiment on a small body. The present PhD thesis contributed to this novel instrument development, from early prototyping to the final instrument flight model (FM), scheduled for launch in 2024. The preparation of gravimeters to any celestial target, but moreso the interpretation of the finally returned data to Earth, demand excellent (surface) gravity simulations. Especially on small, generally non-spherical, bodies, this is non-trivial and ddressed further in this work. Different contributions to gravity and the different existing gravitation modelling methods are introduced. Then, a comparison of three of these methods is performed, and the surface gravity for different cases, including Hera's target, are simulated. Finally, zooming in from the global to the local scale, the novel Wedge-Pentahedra Method (WPM) is presented, allowing to account for local topography surrounding a gravimeter measurement location and influencing the measurement.</p> 02 The two planetary defense ESA Hera and NASA DART missions aim at demonstrating asteroid deflection capabilities. This will be the first-ever extraterrestrial surface gravimeter experiment on a small body. The present PhD thesis contributed to this novel instrument development, from early prototyping to the final instrument flight model (FM)... 99 BE 06 03 01 https://pul.uclouvain.be/resources/titles/29303100809320/images/ad16fe8f92f051afbf656271afd7872d/HIGHQ/9782390613299.jpg 20230425 07 03 01 https://pul.uclouvain.be/resources/titles/29303100809320/images/ad16fe8f92f051afbf656271afd7872d/THUMBNAIL/9782390613299.jpg 20230425 02 https://pul.uclouvain.be/book/?GCOI=29303100809320 06 3052405007518 Presses universitaires de Louvain 01 06 3052405007518 Presses universitaires de Louvain Louvain-la-Neuve BE 04 20230425 642 2023 01 WORLD 01 9.45 in 02 6.30 in 08 16.30 oz 01 24 cm 02 16 cm 08 462 gr 06 3012405004818 CIACO - DUC 03 WORLD FR 01 2 20 1 02 00 02 02 STD 02 34.00 EUR BE S 21.00 28.10 5.90 06 3019000200508 Librairie Wallonie-Bruxelles 33 www.librairiewb.com/ http://www.librairiewb.com/ 02 FR 01 2 20 1 04 00 02 02 STD 02 34.00 EUR R 5.50 32.23 1.77