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dc.contributor.authorHofstetter, Wilfried K.
dc.contributor.authorCrawley, Edward F
dc.date.accessioned2017-02-17T23:04:53Z
dc.date.available2017-02-17T23:04:53Z
dc.date.issued2013-02
dc.date.submitted2012-10
dc.identifier.issn0934-9839
dc.identifier.issn1435-6066
dc.identifier.urihttp://hdl.handle.net/1721.1/106991
dc.description.abstractComplex systems are increasingly being developed as part of portfolios or sets of related complex systems. This enables synergies such as commonality between portfolio systems that can significantly reduce portfolio life-cycle cost and risk. While offering these benefits, commonality usually also incurs up-front as well as life-cycle penalties in cost and risk due to increased design complexity. The resulting trade-off needs to be carried out during the architecting stage of the portfolio life cycle when there is maximum leverage to improve life-cycle properties due to degrees of freedom available in architectural and design decisions. This paper outlines a 4-step methodology for the identification and assessment of commonality opportunities in complex systems portfolios during the architecting stage of the portfolio life cycle. The methodology transforms a solution-neutral description of a portfolio of aerospace systems based on system functionality, requirements, and metrics into a set of preferred portfolio design solutions with commonality. The methodology is based on a 2-stage approach that identifies preferred architectures for each system in the portfolio individually prior to heuristic commonality analysis between systems based on a pairwise assessment of system overlap in functionality, technologies, operational environments, and scale. Application of the methodology is demonstrated with a retrospective analysis of NASA’s Saturn launch vehicle portfolio.en_US
dc.publisherSpringer Londonen_US
dc.relation.isversionofhttp://dx.doi.org/10.1007/s00163-012-0151-zen_US
dc.rightsCreative Commons Attribution-Noncommercial-Share Alikeen_US
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/4.0/en_US
dc.sourceSpringer Londonen_US
dc.titleA methodology for portfolio-level analysis of system commonalityen_US
dc.typeArticleen_US
dc.identifier.citationHofstetter, Wilfried K., and Edward F. Crawley. “A Methodology for Portfolio-Level Analysis of System Commonality.” Research in Engineering Design 24, no. 4 (February 13, 2013): 349–373.en_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Aeronautics and Astronauticsen_US
dc.contributor.mitauthorCrawley, Edward F
dc.relation.journalResearch in Engineering Designen_US
dc.eprint.versionAuthor's final manuscripten_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dc.date.updated2016-05-23T12:08:32Z
dc.language.rfc3066en
dc.rights.holderSpringer-Verlag London
dspace.orderedauthorsHofstetter, Wilfried K.; Crawley, Edward F.en_US
dspace.embargo.termsNen
mit.licenseOPEN_ACCESS_POLICYen_US


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