Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Erkai Watson"'
Publikováno v:
Acta Astronautica. 199:425-435
We present new developments to a discrete element model designed to simulate hypervelocity impacts between on-orbit satellites and space debris. The advantage of the discrete element-based simulation method is its ability to accurately model fragment
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4d2c6f75fd0964773c919d9522c4e2cd
https://doi.org/10.1016/j.actaastro.2022.07.044
https://doi.org/10.1016/j.actaastro.2022.07.044
Publikováno v:
Acta Astronautica. 156:297-300
The characteristics of ejecta are the crucial element in the concept of kinetic impact deflection of asteroids. The mass and velocity distribution of particles ejected from the impact site determine the enhancement of the momentum transferred by the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a8b3dc867f203d53cc9d4ed3d1f899de
https://doi.org/10.1016/j.actaastro.2018.01.046
https://doi.org/10.1016/j.actaastro.2018.01.046
Autor:
Nathanaël Durr, Erkai Watson, Martin Schimmerohn, Holger Krag, Pascal Matura, Anja Altes, Don de Wilde, T. Cardone, Frank Schäfer
Hypervelocity collisions are predicted to be the dominant space debris source in the mid-term future, when a critical spatial density of satellites is reached. The NASA Standard Satellite Breakup Model (SSBM) has been adopted by major space agencies
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c437a2f00b917345cda115729a24e27c
https://publica.fraunhofer.de/handle/publica/264260
https://publica.fraunhofer.de/handle/publica/264260
Publikováno v:
Meteoritics & Planetary Science. 53:1696-1704
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::edf8b4a28ff2d3a5d286583a8ebbf901
https://doi.org/10.1111/maps.12958
https://doi.org/10.1111/maps.12958
Autor:
Martin O. Steinhauser, Erkai Watson
Publikováno v:
Procedia Engineering. 204:75-82
In this paper, we develop and assess a numerical model for simulating hypervelocity impacts (HVI) with a Discrete Element Method (DEM). The model consists of discrete spheres interacting via simple potentials. We determine the material parameters emp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::10ad01a49668e6ec497a47d223b1e16d
https://doi.org/10.1016/j.proeng.2017.09.728
https://doi.org/10.1016/j.proeng.2017.09.728
In-orbit impacts between satellites and space debris lead to varying degrees of fragmentation, ranging anywhere from minor damage to complete breakups. In this paper, we describe an experimental measurement approach for studying fragmentation caused
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1e43933d384f72a0a34ab56506c02d3f
https://publica.fraunhofer.de/handle/publica/255293
https://publica.fraunhofer.de/handle/publica/255293
Publikováno v:
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XLII-2, Pp 1175-1181 (2018)
Collisions between space debris and satellites in Earth’s orbits are not only catastrophic to the satellite, but also create thousands of new fragments, exacerbating the space debris problem. One challenge in understanding the space debris environm
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::948af75636919b369bb99747c54a1e00
https://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XLII-2/1175/2018/
https://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XLII-2/1175/2018/
Autor:
Martin O. Steinhauser, Erkai Watson
Publikováno v:
Materials; Volume 10; Issue 4; Pages: 379
Materials, Vol 10, Iss 4, p 379 (2017)
Materials
Materials, Vol 10, Iss 4, p 379 (2017)
Materials
In this paper we introduce a computational model for the simulation of hypervelocity impact (HVI) phenomena which is based on the Discrete Element Method (DEM). Our paper constitutes the first application of DEM to the modeling and simulating of impa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7260882740372ad95d4999f9a4f1b5fd
Publikováno v:
International Journal of Impact Engineering. 135:103405
Fragmentation is a significant phenomenon caused by hypervelocity impact and has applications in orbital debris and planetary impact research, among many others. In particular, the velocity distribution of fragments created by hypervelocity impact is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::da36738f3187172e48c15623748143f7
https://doi.org/10.1016/j.ijimpeng.2019.103405
https://doi.org/10.1016/j.ijimpeng.2019.103405
Space debris impacts of in-orbit satellites cause varying degrees of fragmentation, ranging from minor damage to catastrophic breakup. In this paper, we introduce an experimental measurement approach for studying the fragmentation effects of hypervel
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0ba0f6688e14914ccd1f12ef2539fa30
https://publica.fraunhofer.de/handle/publica/250704
https://publica.fraunhofer.de/handle/publica/250704