Thermochemistry of species produced from monomethylhydrazine in propulsion and space-related applications

This paper focuses on the chemistry of the widely used propellant monomethylhydrazine. Several different chemistries of this compound are of interest to study propulsion, environmental, and safety issues in wide ranges of temperature (from below the ambient up to thousands of Kelvins), pressure (from millibars up to several tens of bars), and concentration. Here, we present gas-phase thermochemical properties of more than 50 C/H/N species expected to play a role in the chemistry of monomethylhydrazine. These were obtained from high-level ab initio quantum chemistry calculations. Groups of them are discussed in terms of the conditions under which they are expected to be of potential importance.