Single-Shot Temperature Measurements in a Scramjet Combustor Using Thermally Assisted Laser-Induced Fluorescence

What is it about?

Scramjets as hypersonic engines with the potential to outperform rockets in propelling hypersonic vehicles present a possible solution for access-to-space vehicles and cruise vehicles for long-range flights. To develop fully operational scramjets a lot of information is needed, like combustor temperature. Presently, direct temperature measurements are not readily available for scramjets. Another issue is that the available thermometry methods usually require averaged repeated experiments, causing high experimental costs. Laser-induced fluorescence measurements present a technique to resolve combustor temperatures; at a higher spatial resolution than regular gauges. By evaluating the combustor fluorescence, a temperature distribution was obtained across the combustor width.

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