EN‑0004 – Documentation Standards

Document Number: EN‑0004
Title: Documentation Standards
Author: Pathan
Created: 30‑06‑2026
Last Modified: 30‑06‑2026
Revision: 0.1.0
Status: Draft
Subsystem: Project Administration
Related Documents:

EN‑0001
EN‑0003

1. Purpose

This document defines the documentation standards used throughout the ASTRA Autonomous Flight System (AAFS).
The objective is to ensure all engineering records are clear, consistent, traceable, and maintainable throughout the project’s lifetime.

2. Documentation Philosophy

Documentation is a primary engineering deliverable.
Every major engineering decision, requirement, calculation, trade study, simulation, implementation, and test shall be documented.
Engineering documentation shall accurately reflect the current state of the project.

3. Standard Document Format

Unless otherwise required, engineering notebook documents should follow the standard ASTRA document template.

Each document shall include:

Document Number
Title
Author
Created
Last Modified
Revision
Status
Subsystem
Related Documents

4. Writing Standards

Documentation shall:

Be technically accurate.
Be concise and objective.
Use consistent terminology.
Define acronyms on first use.
Avoid ambiguous language.
Use proper grammar and spelling.

Opinions shall be supported by engineering reasoning whenever possible.

5. Engineering Content

Engineering documents should record:

Design intent
Requirements
Assumptions
Constraints
Design decisions
Interfaces
Mathematical analysis
Test procedures
Results
Conclusions

The level of detail shall be appropriate for the document type.

6. Figures, Tables, and Diagrams

Figures and diagrams should:

Have descriptive titles.
Be referenced within the document.
Support the engineering discussion.

Block diagrams, system architectures, flowcharts, and mathematical models should be included whenever they improve understanding.

7. Revision Control

Every revision shall:

Update the revision number.
Update the Last Modified field.
Describe the changes in the Revision History section.

Major engineering changes should be documented through new notebook entries when appropriate.

8. Traceability

Documents should reference related notebook entries, requirements, software modules, simulations, and test reports whenever applicable.
Engineering decisions should remain traceable throughout the project lifecycle.

9. Revision History

Revision Date Description 0.1.0 30‑06‑2026 Initial document.