v1.3.3

JSBSim version 1.3.3

Release files

• Windows (64-bit)
  • JSBSim-1.3.3-setup.exe — Windows installer compiled with Microsoft Visual Studio Enterprise 2022 (build 17.14.37710.0)
• Ubuntu Jammy 22.04 and Noble 24.04 (amd64)
  • *.deb — Debian packages
• Python wheel packages are available on PyPI and can be installed using pip install jsbsim. To upgrade an existing installation, use pip install --upgrade jsbsim.
• Conda packages are available from conda-forge. To install via conda, run conda install -c conda-forge jsbsim

Changelog

Version 1.3.3 has been motivated by the failure of release 1.3.2 to upload to Zenodo. It fixes the malformed CITATION.cff to allow that upload to complete. A couple of other fixes have been included in the process.

User

• Fix the compensation of CG moves for a vehicle on the ground when its CG starts exactly at the origin of the structural frame. The origin is a valid CG location but was mistaken for "no CG seen yet", so the first CG move was never compensated and the structure shifted when the mass distribution changed (PR #1523, @AlexanderRex).
• Fix the friction model of the brushless DC motor (FGBrushLessDCMotor) so that the zero torque current i0 always resists the rotation, following Drela's first-order motor model. Previously a motor whose throttle was cut kept spinning at low RPM instead of stopping. The torque of a driven motor is unchanged (PR #1524, @AlexanderRex).

Developer

• Fix the CITATION.cff file, whose malformed metadata made the upload of release 1.3.2 to Zenodo fail. The file is rewritten in the standard CFF layout (commit 72264cd, @agodemar).
• Add the validation of CITATION.cff (using cffconvert) to the CI/CD workflow, to prevent a malformed file from breaking the Zenodo upload of a release. (PR #1528, @bcoconni).