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However, in order to improve the foundations for decision-making, this article presents methods that are intended to increase the engineering knowledge in the early design phases. In complex products, different systems from a multitude of engineering disciplines have to work tightly together. Collaborative design is described as a process where a product is designed through the collective and joint efforts of domain experts. A collaborative multidisciplinary design optimization process is therefore proposed in the conceptual design phase in order to increase the likelihood of more accurate decisions being taken early on. The performance of the presented framework is demonstrated in an industrial application to design aircraft systems in the conceptual phase.<\/jats:p>","DOI":"10.1177\/1063293x15587020","type":"journal-article","created":{"date-parts":[[2015,6,3]],"date-time":"2015-06-03T20:51:11Z","timestamp":1433364671000},"page":"236-249","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":18,"title":["Collaborative multidisciplinary design optimization: A framework applied on aircraft conceptual system design"],"prefix":"10.1177","volume":"23","author":[{"given":"Edris","family":"Safavi","sequence":"first","affiliation":[{"name":"Division of Machine Design, Department of Management and Engineering (IEI), Link\u00f6ping University, Link\u00f6ping, Sweden"}]},{"given":"Mehdi","family":"Tarkian","sequence":"additional","affiliation":[{"name":"Division of Machine Design, Department of Management and Engineering (IEI), Link\u00f6ping University, Link\u00f6ping, Sweden"}]},{"given":"Hampus","family":"Gavel","sequence":"additional","affiliation":[{"name":"Department of Modeling and Simulation of Vehicle System, SAAB Aeronautics, Link\u00f6ping, Sweden"}]},{"given":"Johan","family":"\u00d6lvander","sequence":"additional","affiliation":[{"name":"Division of Machine Design, Department of Management and Engineering (IEI), Link\u00f6ping University, Link\u00f6ping, Sweden"}]}],"member":"179","published-online":{"date-parts":[[2015,6,3]]},"reference":[{"key":"bibr1-1063293X15587020","doi-asserted-by":"publisher","DOI":"10.2514\/1.C031338"},{"key":"bibr2-1063293X15587020","volume-title":"Geometry based design automation\u2014applied to aircraft design and optimization","author":"Amadori K","year":"2012"},{"key":"bibr3-1063293X15587020","doi-asserted-by":"publisher","DOI":"10.2514\/3.13015"},{"key":"bibr4-1063293X15587020","doi-asserted-by":"publisher","DOI":"10.1155\/2013\/351097"},{"key":"bibr5-1063293X15587020","unstructured":"B\u00f6hnke D (2009) Data integration in preliminary airplane design. 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