NACA Technical Notes

Abstract

Report presenting an investigation of the thrust augmentation of a turbojet engine resulting from the evaporation of water prior to mechanical compression over a range of flight Mach numbers, altitudes, ambient temperatures, and ambient relative humidities. The amount of thrust augmentation possible from compressor-inlet-air saturation increased with an increase in flight Mach number and decreased as the altitude was increased. Results regarding the psychrometric chart, generalized performance analysis, and augmentation calculations are provided