Linked Life Data

15880919

Source:http://linkedlifedata.com/resource/pubmed/id/15880919

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
6
pubmed:dateCreated
2005-5-9
pubmed:abstractText
Improved spacecraft shield design requires early entry of radiation constraints into the design process to maximize performance and minimize costs. As a result, we have been investigating high-speed computational procedures to allow shield analysis from the preliminary design concepts to the final design. In particular, we will discuss the progress towards a full three-dimensional and computationally efficient deterministic code for which the current HZETRN evaluates the lowest-order asymptotic term. HZETRN is the first deterministic solution to the Boltzmann equation allowing field mapping within the International Space Station (ISS) in tens of minutes using standard finite element method (FEM) geometry common to engineering design practice enabling development of integrated multidisciplinary design optimization methods. A single ray trace in ISS FEM geometry requires 14 ms and severely limits application of Monte Carlo methods to such engineering models. A potential means of improving the Monte Carlo efficiency in coupling to spacecraft geometry is given in terms of re-configurable computing and could be utilized in the final design as verification of the deterministic method optimized design.
pubmed:keyword
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
S
pubmed:status
MEDLINE
pubmed:issn
0273-1177
pubmed:author
pubmed:copyrightInfo
Published by Elsevier Ltd on behalf of COSPAR.
pubmed:issnType
Print
pubmed:volume
34
pubmed:owner
NASA
pubmed:authorsComplete
Y
pubmed:pagination
1319-27
pubmed:dateRevised
2007-4-16
pubmed:meshHeading
pubmed:year
2004
pubmed:articleTitle
A space radiation transport method development.
pubmed:affiliation
NASA Langley Research Center, Hampton, VA 23681-2199, USA. john.w.wilson@nasa.gov
pubmed:publicationType
Journal Article