We are inviting the CPACS community to join our upcoming CPACS Stakeholder Meeting, focused on the proposed refinements for the v3.5.1 release and the upcoming release of our geometry library TiGL v3.5.

📅 Date: Tuesday, 19 May 2026
🕤 Time: 9:30 – 11:30 (CET)
💻 Platform: Webex (online)

The meeting will address three refinement proposals that are currently under review:

• Systems (#858) – Refined geometry definition for pre-defined system elements and revised component placement at aircraft level.
• Decks (#859) – Closer alignment of deckElements with the systems concept and replacement of the boundingBox approach with primitive-based geometry.
• Tanks (#860) – Vessel-based tanks moved to aircraft/model level via parentUID, with support for placement in fuselages, wings, nacelles, and other geometry components.

These proposals build on the capabilities introduced in CPACS v3.5 and reflect first implementation experience from the community.

In addition, we will give an outlook on TiGL v3.5, which is planned as a hand-in-hand release with CPACS v3.5.1, providing support for the new schema features.

Please find the info sheet for a detailed overview of the proposed changes and the key review questions.

If you would like to participate, please send a short request to cpacs@dlr.de and we will provide you with the meeting access details.

We look forward to your participation and a productive discussion!