NASA Systems Modeling Handbook (NASA-HDBK-1009A Rev A)

Source: NASA (US Government work, public domain) | Chapters: 8

When to use

Use this skill when you need to do model-based systems engineering in support of NASA's mandated SE processes rather than as a parallel diagramming activity: planning a modeling effort, setting up a model's conventions and organization, building a tool-agnostic metamodel that traces back to NPR 7123.1, capturing stakeholders / requirements / structure / behavior / V&V as SysML diagrams and tables, and harvesting those views to generate the standard NASA SE work products (ConOps, MOE, MOP, TPM, V&V) that feed technical reviews. This is the MBSE-method bridge between NASA SE governance (nasa-npr-7123, nasa-se-handbook) and the SysML/OMG modeling-language landscape (omg-signpost).

Prerequisites: none — plain Markdown; no MCP server, API key, or licence tier needed at runtime. Working knowledge of SysML helps but is not taught here.

How to Use This Skill

• Without arguments — load the core frameworks below: the three aspects of MBSE, the NASA SE Engine plus its two added steps, the metamodel and its four pillars, the model→work-product extraction model, and the MBSE Grid.
• With a topic — ask about an aspect (language / methodology / framework), a metamodel pillar (structure / behavior / requirements / parametrics), a relationship (derive / trace / verifies / satisfies / refines / allocate), a work product (ConOps, MOE, MOP, TPM, V&V), or an alternative approach (PBR, Scenario, System Specification, Verification).
• With a chapter — ch01 (MBSE overview + SE Engine), ch03 (the metamodel), ch04/ch05 (worked diagrams: structure / V&V), ch06 (generating work products), ch07 (MBSE Grid + alternatives), ch08 (ConOps template).

Supporting files: glossary.md, patterns.md, cheatsheet.md.

One handbook, one thesis. The model is the source; diagrams, tables, and matrices are views extracted from it to implement the SE processes and feed reviews. SysML v1.7, MagicDraw, and CATIA No Magic are illustrations — the metamodel underneath is tool-agnostic and traces to NPR 7123.1. Scope is bounded to four common technical processes by an Agency MBSE Community of Practice survey.