Dymos 1.15.0

[robfalck]

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Release Notes for Dymos 1.15.0

September 30, 2025

This release features a refactor of the Radau transcription that should be transparent to users, but cleans up some of the internal machinery. Among other things, this will fix issues with checking totals in the model due to the hybrid implicit/explicit behavior of some of the old components. It also moves towards unifying the transcriptions so that all of them can separately accept "states:{name}", "initial_states:{name}", and "final_states:{name}". The plan is to apply this behavior to the Gauss-Lobatto transcription in the next release.

Backwards Incompatible API Changes & Deprecations

None

Enhancements

• Completed refactor of the Radau transcription. #1196
• add_calc_expr can now promote variable names. #1204

Bug Fixes

• Fixed a bug where picard shooting wasn't allowing initial or final state values to be design variables. #1210

Miscellaneous

• Removed unncessary internal unit conversion from Timeseries and Interleave components. #1198
• Updated GitHub workflows, use NumPy 2.2 as the baseline #1199
• Hull problem Rework #1201
• Updated ruff configuration and fixed issues found by ruff. #1206
• Added fix for change in conda env export. #1208
• Removed redundant final_setup calls. #1211

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This discussion was created from the release Dymos 1.15.0.