A simple package to efficiently calculate ideal gas properties based on NASA polynomials. This assumes that the specifc heat of the gas/mixture is only a function of its temperature, i.e., $c_p(T)$ , $h(T)$, and $s(T,p)$ (note the entropy is a function of both pressure and temperature).

This package also introduces a method for fast calculations of thermodynamic properties of mixtures with fixed composition by calculating an equivalent polynomial representation of the mixture.