Email this article Investigation of cycle-to-cycle variability at operation of pulsed detonation hydroramjet
- Authors: Avdeev K.A.1, Aksenov V.S.1,2, Sadykov I.A.1, Frolov S.M.1,2, Frolov F.S.1, Shamshin I.O.1
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Affiliations:
- Semenov Federal Research Center for Chemical Physics of the Russian Academy of Sciences
- MEPhI National Research Nuclear University
- Issue: Vol 14, No 1 (2021)
- Pages: 38-46
- Section: Articles
- URL: https://journal-vniispk.ru/2305-9117/article/view/286495
- DOI: https://doi.org/10.30826/CE21140105
- ID: 286495
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Abstract
The study is aimed at clarifying and eliminating the reasons of cycle-to-cycle variability during the operation of an innovative pulsed detonation hydroramjet (PDH) which reduces its thrust performance. An experimental sample of the PDH in the form of a pulsed detonation tube connected to an optically transparent water guide has been designed and manufactured. Experimental studies were performed with the vertical immersion of the sample in water. It was found that the cycle-to-cycle variability is associated with the overexpansion of gaseous detonation products in the detonation tube due to the inertia of the water column in the water guide. Gas overexpansion causes a reverse flow of the gas–water mixture which fills the water guide and penetrates the detonation tube, thus exerting a strong effect on the cyclic operation of the PDH. To eliminate the cycle-to-cycle variability, a new PDH model was developed, manufactured, and tested. The model is equipped with a rotary mechanical valve and operates on a propane–oxygen mixture. Its test fires showed that the use of the valve makes it possible to eliminate the cycle-to-cycle variability and to increase more than twice the average specific impulse: up to 550 s instead of 250 s at an operating frequency of 14 Hz.
About the authors
Konstantin A. Avdeev
Semenov Federal Research Center for Chemical Physics of the Russian Academy of Sciences
Author for correspondence.
Email: kaavdeev@mail.ru
кандидат технических наук, ведущий научный сотрудник
Russian Federation, 4, Kosygin St., Moscow, 119991Victor S. Aksenov
Semenov Federal Research Center for Chemical Physics of the Russian Academy of Sciences; MEPhI National Research Nuclear University
Email: v.aksenov@mail.ru
Candidate of Science in Physics and Mathematics, Senior Researcher; Associate Professor
Russian Federation, 4, Kosygin St., Moscow, 119991; 31, Kashirskoe Hwy, Moscow, 115409Ilyas A. Sadykov
Semenov Federal Research Center for Chemical Physics of the Russian Academy of Sciences
Email: ilsadykov@mail.ru
Postgraduate Student, Junior Researcher
Russian Federation, 4, Kosygin St., Moscow, 119991Sergey M. Frolov
Semenov Federal Research Center for Chemical Physics of the Russian Academy of Sciences; MEPhI National Research Nuclear University
Email: smfrol@chph.ras.ru
Doctor of Science in Physics and Mathematics, Head of Department, Head of the Laboratory; Professor
Russian Federation, 4, Kosygin St., Moscow, 119991; Kashirskoe Hwy, Moscow, 115409Fedor S. Frolov
Semenov Federal Research Center for Chemical Physics of the Russian Academy of Sciences
Email: f.frolov@chph.ru
Candidate of Science in Physics and Mathematics, Senior Researcher
Russian Federation, 4, Kosygin St., Moscow, 119991Igor O. Shamshin
Semenov Federal Research Center for Chemical Physics of the Russian Academy of Sciences
Email: igor_shamshin@mail.ru
Candidate of Science in Physics and Mathematics, Senior Researcher
Russian Federation, 4, Kosygin St., Moscow, 119991References
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