Ross, Adam

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Incorporating System Properties into Multi-Attribute Tradespace Exploration with Concurrent Design Context: “Engineering Systems Thinking”	Model/ Simulation	Inputs	 Outputs	 		•  Decision Theory	•  Design Theory	•  Lean Research	•  …	 		•  Similarity analysis	•  Sensitivity analyses	•  Portfolio Theory	•  Real options	•  …	 		•  Parametric Models	•  Dynamic Models	•  Integrated Concurrent Design	•  …	“Value-centric Design”	Advanced Model/Sim	Tradespace Analysis Techniques	Adam Ross, ESD PhD Candidate Committee: Daniel Hastings (Chair), Deborah Nightingale, Olivier de Weck, Thomas Allen Motivation Projects Diff*Q201234567ManufacturabilityTestabilityOperabilitySustainabilityFlexibilityDurabilityReliabilityFail-safeSafetyAdaptabilityQualityAgilityReparabilityRobustnessMaintainabilityScalabilityModularityFFRDCPrimeResearch Priority (N=9)ManufacturabilityTestabilityOperabilitySustainabilityFlexibilityDurabilityReliabilityFail-safeSafetyAdaptabilityQualityAgilityReparabilityRobustnessMaintainabilityScalabilityModularityX-TOS•  Research Questions 1. What are the relationships between flexibility, adaptability, robustness, and scalability/modularity for space systems? 2. How can these 3-4 ilities be quantified and/or used as decision metrics when exploring tradespaces? •  Objective: –  Extend the Multi-attribute Tradespace Exploration with Concurrent Design process to include consideration of several of the ESD defined “ilities” system properties •  Anticipated contribution (by end of 2005): –  Expanded generalized framework for Multi-Attribute Tradespace Exploration with Concurrent Design (MATE-CON) process –  Analysis for incorporating and understanding tradeoffs of certain “ilities” in MATE-CON; impact assessment on  quality of system and system-of-system design through tradespace perspective UtilitySBR Design TradespaceBA CD EΔ$Lifecycle Cost ($B)Cost of flexibility?From Roberts, 2003UtilityUtilityEx. MATE-CON ilities The “MATE” System 40 42 44 46 48 50 52 54 56 58 600.20.30.40.50.60.70.8Lifecycle Cost ($M)Utility40 42 44 46 48 50 52 54 56 58 600.20.30.40.50.60.70.8Lifecycle Cost ($M)UtilityOriginal RevisedΔReq.Focus on Robustness, Flexibility, Adaptability, Scalability… From Weigel, 2002Flexibility… Robustness… Related: •  Adaptability (self-changing) •  Scalability (resizing) To changes in policy: To changes in desires: Project 1 Conceptual Design Industry State of Practice: Applicability, Deployability, and Need  Project 2 Knowledge Capture, Synthesis, Analysis: Develop MATE Matlab toolbox and reusable model library Diff*Q201234567OperabilityScalabilityAgilityAdaptabilityManufacturabilityRobustnessSustainabilityFlexibilityTestabilityDurabilityReliabilityFail-safeSafetyQualityModularityReparabilityMaintainabilityFFRDCPrimeResearch Priority (N=9)OperabilityScalabilityAgilityAdaptabilityManufacturabilityRobustnessSustainabilityFlexibilityTestabilityDurabilityReliabilityFail-safeSafetyQualityModularityReparabilityMaintainabilityConceptual/preliminaryDesignDetaildesign/developmentProductionand/orconstructionProduct use/support/phaseout/disposal100%80%66%Ease of ChangeLCC committedCost IncurredCostValue1234Conceptual Design is high leverage phase in system development Tradespace Exploration enables ‘big picture’ understanding 1.  Point design 2.  “Optimized” designs 3.  “Optimized” sets 4.  Full tradespace Architecture ExplorationArchitecture EvaluationNeed IdentificationDesign ExplorationDesign EvaluationSystem Design(s)DesignMATE as a communication path MATE as a process MATE as a system Multi-Attribute Tradespace Exploration Academic Pursuits Publications Contact: Adam Ross (adamross@mit.edu) Ross, Adam M., Nathan P. Diller, Daniel E. Hastings, and Joyce M. Warmkessel. "Multi-Attribute Tradespace Exploration in Space System Design." In World Space Congress, 1-14. Houston, TX: IAF, 2002. Ross, Adam M., Daniel E. Hastings, and Nathan P. Diller. "Multi-Attribute Tradespace Exploration with Concurrent Design for Space System Conceptual Design." In Aerospace Sciences Meeting, 14. Reno, NV: AIAA, January 2003. Ross, Adam M. "Multi-Attribute Tradespace Exploration with Concurrent Design as a Value-Centric Framework for Space System Architecture and Design." Dual-SM, Massachusetts Institute of Technology, 2003. Ross, Adam M., Nathan P. Diller, Daniel E. Hastings, and Joyce M. Warmkessel. "Multi-Attribute Tradespace Exploration with Concurrent Design as a Front-End for Effective Space System Design." Journal of Spacecraft and Rockets 41, no. 1 (2004): 20-28. Ross, Adam M., and Daniel E. Hastings. "The Tradespace Exploration Paradigm." Paper presented at the INCOSE 2005 International Symposium, Rochester, NY, July 10-15 2005 (Submitted). •  Visited FFRDC, Prime contractors •  Survey and interview •  Air Force/LAI System Engineering for Robustness Workshop •  Incorporate work from six prior MATE models •  Standardize and collect functions 

Incorporating System Properties into Multi-Attribute Tradespace Exploration with Concurrent Design

   POSTER DESCRIPTION SHEET   Title: Incorporating System Properties into Multi-Attribute Tradespace Exploration with Concurrent Design   Author(s): Adam Ross – Doctoral Research Assistant   Summary Description: The expected contributions of this research include: concrete quantification of flexibility, robustness, adaptability, and scalability in a value-centric tradespace exploration framework (MATE), insight into how unarticulated value may be assessed in addition to formal articulated value, a useful and expanded process/framework for Conceptual Design trade studies through the explicit consideration of psychological and cognitive abilities of humans, and suggestions for future work.   Key Points: 1) Tradespace exploration paradigm allows holistic system understanding, and enables designers to cope with dynamic uncertainty  2)  Ilities, like flexibility, may arise as tradespace emergent phenomenon  3) Incorporation of ilities adds unarticulated value as decision criteria for determining “best” system designs   Linkage with Research:  PhD associated with Systems Architecting, Product Design, Lifecycle Sustainability, Emerging Systems Engineering Methodologies 

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Incorporating System Properties into Multi-Attribute Tradespace Exploration with Concurrent Design

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