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Article

Study of Intra-Chamber Processes in Solid Rocket Motors by Fiber Optic Sensors

1
Department of Laser and Optical-Electronic Systems, Bauman Moscow State Technical University, 2-nd Baumanskaya 5-1, 105005 Moscow, Russia
2
Kotelnikov Institute of Radioengineering and Electronics of RAS, Mokhovaya 11-7, 125009 Moscow, Russia
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Academic Editors: Maria Lepore and Ines Delfino
Sensors 2021, 21(23), 7836; https://doi.org/10.3390/s21237836 (registering DOI)
Received: 2 November 2021 / Revised: 19 November 2021 / Accepted: 23 November 2021 / Published: 25 November 2021
(This article belongs to the Special Issue Optical Sensors Technology and Applications)
In this study, an experimental study of the burning rate of solid fuel in a model solid propellant rocket motor (SRM) E-5-0 was conducted using a non-invasive control method with fiber-optic sensors (FOSs). Three sensors based on the Mach–Zehnder interferometer (MZI), fixed on the SRM E-5-0, recorded the vibration signal during the entire cycle of solid fuel burning. The results showed that, when using MZI sensors, the non-invasive control of solid fuel burnout is made possible both by recording the time of arrival of the combustion front to the sensor and by analyzing the peaks on the spectrogram of the recorded FOS signal. The main mode of acoustic vibrations of the chamber of the model SRM is longitudinal, and it changes with time, depending on the chamber length. Longitudinal modes of the combustion chamber were detected by MZI only after the combustion front passed its fixing point, and the microphone was unable to register them at all. The results showed that the combustion rate was practically constant after the first second, which was confirmed by the graph of the pressure versus time at the nozzle exit. View Full-Text
Keywords: Mach–Zehnder interferometer; fiber optic sensor; solid fuel; solid rocket motors Mach–Zehnder interferometer; fiber optic sensor; solid fuel; solid rocket motors
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MDPI and ACS Style

Zhirnov, A.A.; Stepanov, K.V.; Sazonkin, S.G.; Choban, T.V.; Koshelev, K.I.; Chernutsky, A.O.; Pnev, A.B.; Novikov, A.O.; Yagodnikov, D.A. Study of Intra-Chamber Processes in Solid Rocket Motors by Fiber Optic Sensors. Sensors 2021, 21, 7836. https://doi.org/10.3390/s21237836

AMA Style

Zhirnov AA, Stepanov KV, Sazonkin SG, Choban TV, Koshelev KI, Chernutsky AO, Pnev AB, Novikov AO, Yagodnikov DA. Study of Intra-Chamber Processes in Solid Rocket Motors by Fiber Optic Sensors. Sensors. 2021; 21(23):7836. https://doi.org/10.3390/s21237836

Chicago/Turabian Style

Zhirnov, Andrey A., Konstantin V. Stepanov, Stanislav G. Sazonkin, Tatyana V. Choban, Kirill I. Koshelev, Anton O. Chernutsky, Alexey B. Pnev, Alexey O. Novikov, and Dmitriy A. Yagodnikov 2021. "Study of Intra-Chamber Processes in Solid Rocket Motors by Fiber Optic Sensors" Sensors 21, no. 23: 7836. https://doi.org/10.3390/s21237836

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