A trade study or trade-off study is a engineering tool that is used to supports decision making Trade study result documents the scope, requirements, assumptions, criteria and solutions used for a decision. This tool is very useful since the new information frequently comes, changes and decisions are re-evaluated.
In a trade study an objective comparison with respect to performance, cost, schedule, risk, and all other reasonable criteria of all realistic alternative requirements such as architectures; baselines; or design, verification, manufacturing, deployment, training, operations, support, or disposal approaches.
Trade studies or trade-off study are the graphical tool and common decision-support tools that are used throughout the project lifecycle to capture and help assess alternatives. It is broadly classified into qualitative and quantitative.
Common steps in the trade study process are:
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