Jet Propulsion Library v1.6 is part of Modelon’s 2020.1 release.

New versions of Modelon libraries are sold and distributed directly from Modelon, as well as approved resellers.

New features

  • To improve the debugging capabilities in failing models, a new “stack” variable has been added which will print the path of the failing component in the log message. A technical note is added which covers the details on how to use this feature.
  • Added new Mixed Turbofan example models in the library. Results for the models are validated with open-source NASA pyCycle package.


  • New default values in PressureBoundary and AmbientBoundary: specifypDyn=true and specifywDyn=false, to ensure that pressures are always imposed in dynamic simulations.
  • Removing tool-specific workaround in the media implementation.
  • Updating specific enthalpy, specific entropy and specific heat capacity functions for air and combustion products to be C2-smooth.

Conversion of user libraries

  • Automatic conversion of user libraries from version 1.5 to 1.6 is supported using the included conversion script “Convert_to_1.6.mos” located under JetPropulsion 1.6ResourcesScripts.


  • JetPropulsion 1.6 is based on Modelon Base Library 3.5 and Modelica Standard Library 3.2.3.