MIT16_842F09_lec09

MIT16_842F09_lec09 - November 6, 2009 16.842 Fundamentals...

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16.842 16.842 Fundamentals of Systems Engineering 1 Lecture 9 – Verification and Validation Prof. Olivier de Weck November 6, 2009
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16.842 V-Model – Nov. 6, 2009 Systems Engineering Overview Stakeholder Analysis Requirements Definition System Architecture Concept Generation Tradespace Exploration Concept Selection Design Definition Multidisciplinary Optimization System Integration Interface Management Verification and Validation Commissioning Operations Lifecycle Management Cost and Schedule Management Human Factors System Safety
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16.842 3 Outline ± Verification and Validation ± What is their role? ± Position in the lifecycle ± Testing ± Aircraft flight testing (experimental vs. certification) ± Spacecraft testing (“shake and bake”) ± Caveats ± Technical Risk Management ± Risk Matrix ± Iron Triangle in Projects: Cost, Schedule, Scope > Risk ± Lead-in to Faster-Better-Cheaper case study
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16.842 Readings for Today ± NASA/SP-2007-6105 ± Section 5.3 (pp. 83-97) ± Section 5.4 (pp. 98-105) ± Appendix E (p. 284) ± Appendix I (p. 301) ± HBS Case: 9-603-083 Mission to Mars (A) 4
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16.842 Verification and Validation Stakeholder Analysis Set Requirements =Metric + Target value Complete? Intended function Concept Implemented Design Solution Start Model End SE process Solvable? Functional Deployment Model Delivered Function Is goal representative? Validation Validation Loop Consistent? Delivered Goals =Metrics + Delivered value Attainable? Verification Verification Loop Testing
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16.842 Differences between V & V 6 Verification - During development - Check if requirements are met - Typically in the laboratory - Component/subsystem centric Validation - During or after integration -Typically in real or simulated mission environment -Check if stakeholder intent is met - Full-up system Was the end product realized right? Was the right end product realized?
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16.842 Product Verification Process 7 Types of verification -Analysis -Demonstration -Inspection -Test Outputs: -Discrepancy reports -Verified product -Compliance documentation
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16.842 NASA Life-Cycle Phases NASA Life Cycle Phases Project Life Cycle Phases Pre-Phase A: Concept Studies Phase A: Concept & Technology Development Phase B: Preliminary Design & Technology Completion Phase C: Final Design & Fabrication Approval for Implementatio n FORMULATION IMPLEMENTATION KDP C Project Life Cycle Gates & Major Events Operations Pre-Systems Acquisition Systems Acquisition Phase E: Operations & Sustainment KDP A Launch KDP D Phase D: System Assembly, Int & Test, Launch KDP B Phase F: Closeout Decommissioning End of Mission FOOTNOTES 1. Flexibility is allowed in the timing, number, and content of reviews as long as the equivalent information is provided at each KDP and the approach is fully documented in the Project Plan. These reviews are conducted by the project for the independent SRB. See Section 2.5 and Table 2-6.
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This note was uploaded on 11/08/2011 for the course AERO 16.810 taught by Professor Olivierdeweck during the Winter '07 term at MIT.

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MIT16_842F09_lec09 - November 6, 2009 16.842 Fundamentals...

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