Aeropropulsion and Power Technology

Zolo, in conjunction with researchers from Stanford University, proposes to develop multiplexed tunable diode laser spectroscopic diagnostics to measure combustion parameters in the flame holding region of jet engine augmentors. The proposed system will use wavelength modulation spectroscopy with second harmonic detection in order to measure at least water concentration and temperature inside an operating afterburner. Optical access will be gained via a water-cooled probe currently being developed for the program. The system should be able to measure high-speed combustion instabilities that currently limit augmentor performance. Detection of other species such as CO, CO2, and unburned fuel components such as methane and ethylene will be investigated as well.