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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Published in:AIP Conference Proceedings
Main Authors: Goldstein, D. B., Summy, D., Colaprete, A., Varghese, P. L., Trafton, L. M.
Format: Article in Journal/Newspaper
Language:English
Published: 2009
Subjects:
collisionless atmosphere
exosphere
lunar atmosphere
lunar impact
lunar south-pole
water ice
cold trap
deposits
prospector
search
engineering
aerospace
physics
fluids & plasmas
South Pole
South pole
Online Access:http://hdl.handle.net/2152/29498
https://doi.org/10.1063/1.3076439
id ftunivtexas:oai:repositories.lib.utexas.edu:2152/29498
record_format openpolar
spelling 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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