With this proposal, a Modelica library for thermodynamic properties of gases and liquids that are used as working media in aircraft, and an Excel interface to the same functions with plotting capabilities for typical thermodynamic design diagrams (Temperature-Entropy and Enthalpy-Entropy) were developed. It is important that the complete temperature and pressure range experienced by aircraft is covered, from -60 deg Celsius to 200 deg Celsius, depending on the fluid. The pressure range depends on the fluid, as an example a range from 150 to 1100 hPa is necessary for air. Currently available model libraries don't cover the complete range.

A fixed starting date of August 1st was chosen to align the project with the original planning of the ITD activities.