Arthur M. Trout
naca-tn-2104
Jun 1950
A Mollier diagram for air saturated with water vapor and charts showing thermodynamic properties of various air - water vapor and exhaust gas - water vapor mixtures are presented as aids in calculating the thrust augmentation theoretically possible by the evaporation of water during compression.
An Adobe Acrobat (PDF) file of the entire report:
http://naca.central.cranfield.ac.uk/reports/1950/naca-tn-2104.pdf