High-pressure solid propellant combustion zone structure from analysis of hydroxyl radical chemiluminescence

Campbell, David H.; Hulsizer, S.; Edwards, Tim; Weaver, D. P.

doi:10.2514/6.1985-1174

Cited by 1 publication

(2 citation statements)

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“…For practical reasons, we use a steric factor q averaged over all levels in order to calculate the collisional transfer rates Q with Eqs. (3) and (4). The resulting Q rates are then injected into Eq.…”

Section: Simulation and Fitting Proceduresmentioning

confidence: 99%

“…Extensive reviews of optical methods applied to solid propellant flames have been reported by Parr and Hanson-Parr [1,2]. Line-of-sight optical techniques such as emission [3,4], UV/visible [5,6], midinfrared [7], and Fourier transform infrared (FTIR) [8] absorption spectroscopies have been used to measure temperature and concentration profiles in these flames. Significant effort was devoted to improve performances, in particular in terms of spatial resolution and signal-to-noise ratio.…”

Section: Introductionmentioning

confidence: 99%

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Detection of iron atoms by emission spectroscopy and laser-induced fluorescence in solid propellant flames

et al. 2018

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Planar laser-induced fluorescence on atomic iron is investigated in this paper, and a measurement strategy is proposed to monitor the fluorescence of iron atoms with good sensitivity. A model is proposed to fit the experimental fluorescence spectra, and good agreement is found between simulated and experimental spectra. Emission and laser-induced fluorescence measurements are performed in the flames of ammonium perchlorate composite propellants containing iron-based catalysts. A fluorescence signal from iron atoms after excitation at 248 nm is observed for the first time in propellant flames. Images of the spatial distribution of iron atoms are recorded in the flame in which turbulent structures are generated. Iron fluorescence is detected up to 1.0 MPa, which opens the way to application in propellant combustion.

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Section: Simulation and Fitting Proceduresmentioning

confidence: 99%