A methodology for portfolio-level analysis of system commonality
Complex 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 in...
| Main Authors: | , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
Springer London
2017
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| Online Access: | http://hdl.handle.net/1721.1/106991 |
| _version_ | 1826197054980882432 |
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| author | Hofstetter, Wilfried K. Crawley, Edward F |
| author2 | Massachusetts Institute of Technology. Department of Aeronautics and Astronautics |
| author_facet | Massachusetts Institute of Technology. Department of Aeronautics and Astronautics Hofstetter, Wilfried K. Crawley, Edward F |
| author_sort | Hofstetter, Wilfried K. |
| collection | MIT |
| description | Complex 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. |
| first_indexed | 2024-09-23T10:42:07Z |
| format | Article |
| id | mit-1721.1/106991 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T10:42:07Z |
| publishDate | 2017 |
| publisher | Springer London |
| record_format | dspace |
| spelling | mit-1721.1/1069912022-09-27T14:22:38Z A methodology for portfolio-level analysis of system commonality Hofstetter, Wilfried K. Crawley, Edward F Massachusetts Institute of Technology. Department of Aeronautics and Astronautics Crawley, Edward F Complex 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. 2017-02-17T23:04:53Z 2017-02-17T23:04:53Z 2013-02 2012-10 2016-05-23T12:08:32Z Article http://purl.org/eprint/type/JournalArticle 0934-9839 1435-6066 http://hdl.handle.net/1721.1/106991 Hofstetter, 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 http://dx.doi.org/10.1007/s00163-012-0151-z Research in Engineering Design Creative Commons Attribution-Noncommercial-Share Alike http://creativecommons.org/licenses/by-nc-sa/4.0/ Springer-Verlag London application/pdf Springer London Springer London |
| spellingShingle | Hofstetter, Wilfried K. Crawley, Edward F A methodology for portfolio-level analysis of system commonality |
| title | A methodology for portfolio-level analysis of system commonality |
| title_full | A methodology for portfolio-level analysis of system commonality |
| title_fullStr | A methodology for portfolio-level analysis of system commonality |
| title_full_unstemmed | A methodology for portfolio-level analysis of system commonality |
| title_short | A methodology for portfolio-level analysis of system commonality |
| title_sort | methodology for portfolio level analysis of system commonality |
| url | http://hdl.handle.net/1721.1/106991 |
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