Modeling The Vapor And Dust Dynamics Due To The Impact Of The Lcross Spacecraft On The Moon
The implications of possibly large volatile reservoirs on the Moon are significant for the future of manned activity there and for space science and exploration in general. In autumn of 2008 NASA will launch the LCROSS mission to impact two spacecraft into a permanently shadowed crater-a cold trap -...
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ftunivtexas:oai:repositories.lib.utexas.edu:2152/29498 2023-05-15T18:22:04+02:00 Modeling The Vapor And Dust Dynamics Due To The Impact Of The Lcross Spacecraft On The Moon Goldstein, D. B. Summy, D. Colaprete, A. Varghese, P. L. Trafton, L. M. Goldstein, D. B. Summy, D. 2009-12 application/pdf http://hdl.handle.net/2152/29498 https://doi.org/10.1063/1.3076439 English eng Rarefied Gas Dynamics D. B. Goldstein, D. Summy, A. Colaprete, P. L. Varghese, and L. M. Trafton. AIP Conference Proceedings 1084, 1061 (Dec., 2008); doi:10.1063/1.3076439 0094-243X 978-0-7354-0615-5 http://hdl.handle.net/2152/29498 doi:10.1063/1.3076439 Administrative deposit of works to UT Digital Repository: This works author(s) is or was a University faculty member, student or staff member; this article is already available through open access or the publisher allows a PDF version of the article to be freely posted online. The library makes the deposit as a matter of fair use (for scholarly, educational, and research purposes), and to preserve the work and further secure public access to the works of the University. collisionless atmosphere exosphere lunar atmosphere lunar impact lunar south-pole water ice cold trap deposits prospector search engineering aerospace physics fluids & plasmas Article 2009 ftunivtexas https://doi.org/10.1063/1.3076439 2020-12-23T22:17:58Z The implications of possibly large volatile reservoirs on the Moon are significant for the future of manned activity there and for space science and exploration in general. In autumn of 2008 NASA will launch the LCROSS mission to impact two spacecraft into a permanently shadowed crater-a cold trap - at the south pole of the Moon. The lead spacecraft will excavate its own several meter crater. The process will be observed by the following smaller vehicle and by orbiting and Earth-based instruments in hopes of observing the release of volatiles-predominantly water -- from the lunar soil. The following vehicle will then impact as well. We examine the plausible vapor dynamics following the impacts and concentrate on the observability of the gas from Earth or lunar orbit. In the free-molecular computational model of the vapor motion, water and OH molecules move ballistically, have a temperature-dependent surface residence time, and are subject to photo-dissociation and ionization losses. Sunlight shadowing, separation of the vapor from the dust grains, dust thermodynamics and different impact plume models are considered. Aerospace Engineering Article in Journal/Newspaper South pole The University of Texas at Austin: Texas ScholarWorks South Pole AIP Conference Proceedings 1061 1066 |
institution |
Open Polar |
collection |
The University of Texas at Austin: Texas ScholarWorks |
op_collection_id |
ftunivtexas |
language |
English |
topic |
collisionless atmosphere exosphere lunar atmosphere lunar impact lunar south-pole water ice cold trap deposits prospector search engineering aerospace physics fluids & plasmas |
spellingShingle |
collisionless atmosphere exosphere lunar atmosphere lunar impact lunar south-pole water ice cold trap deposits prospector search engineering aerospace physics fluids & plasmas Goldstein, D. B. Summy, D. Colaprete, A. Varghese, P. L. Trafton, L. M. Modeling The Vapor And Dust Dynamics Due To The Impact Of The Lcross Spacecraft On The Moon |
topic_facet |
collisionless atmosphere exosphere lunar atmosphere lunar impact lunar south-pole water ice cold trap deposits prospector search engineering aerospace physics fluids & plasmas |
description |
The implications of possibly large volatile reservoirs on the Moon are significant for the future of manned activity there and for space science and exploration in general. In autumn of 2008 NASA will launch the LCROSS mission to impact two spacecraft into a permanently shadowed crater-a cold trap - at the south pole of the Moon. The lead spacecraft will excavate its own several meter crater. The process will be observed by the following smaller vehicle and by orbiting and Earth-based instruments in hopes of observing the release of volatiles-predominantly water -- from the lunar soil. The following vehicle will then impact as well. We examine the plausible vapor dynamics following the impacts and concentrate on the observability of the gas from Earth or lunar orbit. In the free-molecular computational model of the vapor motion, water and OH molecules move ballistically, have a temperature-dependent surface residence time, and are subject to photo-dissociation and ionization losses. Sunlight shadowing, separation of the vapor from the dust grains, dust thermodynamics and different impact plume models are considered. Aerospace Engineering |
author2 |
Goldstein, D. B. Summy, D. |
format |
Article in Journal/Newspaper |
author |
Goldstein, D. B. Summy, D. Colaprete, A. Varghese, P. L. Trafton, L. M. |
author_facet |
Goldstein, D. B. Summy, D. Colaprete, A. Varghese, P. L. Trafton, L. M. |
author_sort |
Goldstein, D. B. |
title |
Modeling The Vapor And Dust Dynamics Due To The Impact Of The Lcross Spacecraft On The Moon |
title_short |
Modeling The Vapor And Dust Dynamics Due To The Impact Of The Lcross Spacecraft On The Moon |
title_full |
Modeling The Vapor And Dust Dynamics Due To The Impact Of The Lcross Spacecraft On The Moon |
title_fullStr |
Modeling The Vapor And Dust Dynamics Due To The Impact Of The Lcross Spacecraft On The Moon |
title_full_unstemmed |
Modeling The Vapor And Dust Dynamics Due To The Impact Of The Lcross Spacecraft On The Moon |
title_sort |
modeling the vapor and dust dynamics due to the impact of the lcross spacecraft on the moon |
publishDate |
2009 |
url |
http://hdl.handle.net/2152/29498 https://doi.org/10.1063/1.3076439 |
geographic |
South Pole |
geographic_facet |
South Pole |
genre |
South pole |
genre_facet |
South pole |
op_relation |
Rarefied Gas Dynamics D. B. Goldstein, D. Summy, A. Colaprete, P. L. Varghese, and L. M. Trafton. AIP Conference Proceedings 1084, 1061 (Dec., 2008); doi:10.1063/1.3076439 0094-243X 978-0-7354-0615-5 http://hdl.handle.net/2152/29498 doi:10.1063/1.3076439 |
op_rights |
Administrative deposit of works to UT Digital Repository: This works author(s) is or was a University faculty member, student or staff member; this article is already available through open access or the publisher allows a PDF version of the article to be freely posted online. The library makes the deposit as a matter of fair use (for scholarly, educational, and research purposes), and to preserve the work and further secure public access to the works of the University. |
op_doi |
https://doi.org/10.1063/1.3076439 |
container_title |
AIP Conference Proceedings |
container_start_page |
1061 |
op_container_end_page |
1066 |
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1766201412643979264 |