High-bandwidth laser-absorption measurements of temperature, pressure, CO, and H2O in the annulus of a rotating detonation rocket engine
GC Mathews, M Blaisdell, AI Lemcherfi… - AIAA Scitech 2021 …, 2021 - arc.aiaa.org
View Video Presentation: https://doi. org/10.2514/6.2021-0418. vid Laser-absorption
spectroscopy (LAS) was used to measure the gas temperature, pressure, and partial
pressures of CO and H2O in the annulus of a rotating detonation rocket engine (RDRE). A
quantum-cascade laser (QCL) emitting near 4978.8 nm was used to measure temperature,
pressure, and the partial pressure of CO at 750 kHz using scanned-wavelength direct
absorption (scanned-DA). Tunable diode lasers (TDLs) emitting near 1391.7 nm and 1469.3 …
spectroscopy (LAS) was used to measure the gas temperature, pressure, and partial
pressures of CO and H2O in the annulus of a rotating detonation rocket engine (RDRE). A
quantum-cascade laser (QCL) emitting near 4978.8 nm was used to measure temperature,
pressure, and the partial pressure of CO at 750 kHz using scanned-wavelength direct
absorption (scanned-DA). Tunable diode lasers (TDLs) emitting near 1391.7 nm and 1469.3 …
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