scope:

Purpose

This Handbook shows how system modeling using the Systems Modeling Language™ (SysML®) can be integrated with the NASA Systems Engineering processes in NPR 7123.1, NASA Systems Engineering Processes and Requirements. The systems engineering products covered in this Handbook are Concept of Operations (ConOps), Requirements, and Verification and Validation (V&V). This Handbook contains sections on model planning, setting up the model including model organization, the metamodel used to demonstrate the system modeling elements and relationships, model building that provides SysML® model examples, and generating diagrams and tables from the system model to support ConOps, Requirement, and Verification and Validation products. The content of this version includes these three products based on a survey conducted through the NASA Agency MBSE Community of Practice.

The system modeling method in this Handbook is tool-agnostic. The modeling approach selected leverages NASA modeling practices but does not reflect all NASA modeling methods. If readers have their own modeling approach, they can use the metamodel to trace back to their modeling approach to generate ConOps, Requirement, and Verification and Validation products.