Documentation

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Documentation

Current documentation

The published release and the ongoing development, both generated from the schema itself.

CPACS 3.5.1 Release

September 2026 · reworked systems, decks and fuel tanks

Open documentation

CPACS development Unreleased

The develop branch, ahead of the latest release

Open documentation

Previous releases

The two releases before the current one are generated from their schema as well. Everything older is kept as a .chm download.

CPACS 3.5 Superseded

December 2023 · introduced systems and tank geometries

Open documentation

Also available

CPACS 3.4 Superseded

August 2022 · revised decks and mass breakdown

Open documentation

Also available

CPACS 3.3
CPACS 3.2
CPACS 3.1
CPACS 3.0
CPACS 2.3.1
CPACS 2.3
Windows file properties dialog with the security check box at the bottom

Opening a .chm file

Windows blocks help files that came from the internet, so a downloaded .chm often opens empty. Right-click the file, open Properties, and tick the security box at the bottom of the General tab. The content appears once the file is reopened.

The documentation pages above open in a browser without it, as does the single-file HTML of the current release.

Project specific versions

Projects often try out extensions to the schema before they enter an official release. Their documentation is published separately.

Impact Monitor
Alicia
Exact-2
Wing Mates
ARCADE
Diabolo
GitLab Pages authorisation prompt with the Authorize button

Documentation on DLR GitLab

Several of the project versions above are served from DLR GitLab Pages, which asks once for permission before redirecting. Click Authorize to continue.