Preliminary experimental study on combustion characteristics in a solid rocket motor nozzle based on the TDLAS system

Yonggang Gao, Yang Liu, Zhichao Dong, Dong Ma, Bin Yang and Congcong Qiu

Energy, 2023, vol. 268, issue C

Abstract: A preliminary experimental study on combustion in a nozzle of solid rocket motor is conducted using a division multiplexing scanning wavelength TDLAS system to accurately investigate the combustion characteristics in the nozzle of a solid rocket motor and provide a reference for improving the accuracy of the performance prediction model and design level of the solid rocket motor. In addition, the chemical reaction mechanisms in the nozzle are compared with results from numerical simulations, and the flow characteristics in the nozzle are analyzed. Results demonstrate that (1) the TDLAS system built for this study achieves real-time measurement of temperature and H2O concentration in the nozzle of a solid rocket motor; (2) The relative error among the three chemical reaction mechanisms is small, which indicates that the three chemical reaction mechanisms constructed in this paper are substantially equivalent; (3) The numerical calculation error of the H2O mole fraction of the three chemical reaction mechanisms is controlled within 13% at measuring points 1 and 2; (4) For bipropellant with low energy such as AP (80%)/HTPB (20%), the flow in the nozzle tends to a frozen flow.

Keywords: Solid rocket motor; TDLAS technology; Preliminary experimental study; Combustion characteristics; Chemical reaction mechanism (search for similar items in EconPapers)
Date: 2023
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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:268:y:2023:i:c:s0360544223001354

DOI: 10.1016/j.energy.2023.126741

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