Presentation on theme: "1 Value of Systems Engineering INCOSE Data. 2 Heuristic Claim of SE Better systems engineering leads to Better system quality/value Lower cost Shorter."— Presentation transcript:
1 Value of Systems Engineering INCOSE Data
2 Heuristic Claim of SE Better systems engineering leads to Better system quality/value Lower cost Shorter schedule SYSTEM DESIGN DETAIL DESIGN PRODUCTION INTEGRATION TEST Traditional Design Time Risk Saved Time/ Cost System Thinking Design Time Risk
3 % Investment in System Engineering Effort (SEE) NASA Tracking 1980s Total Program Overrun 32 NASA Programs
4 NEED Conceptual-PreliminaryDesignDetail Design and DevelopmentConstructionAnd/orProduction System Use, Phase out, and Disposal % Commitment to Technology, Configuration, Performance, Cost, etc. Cost Incurred System-Specific Knowledge Ease of Change Commitment, System-Specific Knowledge, and Cost Time-Phased Sensitivity of SE to Total System Life Cycle Cost Systems Engineering is important early in a program to influence the design when incurred costs are low and design changes are easy.
5 Conceptual System Design Phase Preliminary System Design Phase Detail Design and Development Phase Design Influence High Low Systems Design and Development Progress Individual Design Disciplines Systems Engineering Concept and Technology Development Systems Engineering is important early in a program to influence the design when incurred costs are low and design changes are easy.
6 Conclusions SE effort improves development quality Cost, schedule, subjective Hypothesis is supported by the data Optimum SE effort is 10-15% Matches data from NASA projects Cost, schedule overruns are minimized However, note wide dispersion of data Quality of the SE effort matters Lower quality SE reduces effectiveness