Laser Absorption Imaging diagnostic system for arc jet facilities

We propose the Phase II development of a Laser Absorption Imaging (LAI) diagnostic system, with a design that is specifically optimized for NASA arc jet facilities. This approach exploits advances in high-speed infrared cameras and rapidly tunable lasers to image a range of species in the mid-wave infrared spectral range. The spectral / spatial / temporal data provides needed empirical information. In Phase I, a breadboard system was assembled, and proof of concept measurements conducted to demonstrate temporally and spatially resolved gas property measurements for NO and CO. Specific techniques and components were down selected and risk mitigation strategies developed. In Phase II of the project, we will design and produce a multi-species prototype that will be fully developed and demonstrated at NASA arc jet facilities.