Species profiles in solid propellant flames using absorption and emission spectroscopy
- US Army Ballistic Research Lab., Interior Ballistics Div., Aberdeen Proving Ground, MD (US)
A windowed strand burner with a propellant feed mechanism has been used to characterize the steady-state burning of two composite propellants, M-30 and HMXI, at moderate pressure. Both emission and absorption spectroscopy have yielded profile data on three important combustion species: OH, NH, and CN. Relative appearances of these three species are inferred from emission intensity profiles, and absolute concentration profiles are calculated from the absorption data. This is the first absolute determination of these combustion intermediates in a propellant flame. The concentration measurements for OH indicate that the propellant flame temperatures are about 200 and 100 K below adiabatic for M-30 and HMXI, respectively. A maximum value of 43 ppm NH is found for the M-30 propellant flame. Fluctuations in the flame front of HMXI compromised the determination of maximum concentrations for NH and CN.
- OSTI ID:
- 5641688
- Journal Information:
- Combustion and Flame; (USA), Vol. 84:1 and 2; ISSN 0010-2180
- Country of Publication:
- United States
- Language:
- English
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