Estimation of rocket engines highfrequency stability on start

Authors

  • Артем Юрійович Демедюк Dnepropetrovsk National University Naukova 13, Dnepropetrovsk, 49050, Ukraine

DOI:

https://doi.org/10.15587/1729-4061.2013.12389

Keywords:

Engine operability, liquid-propellant rocket engine, high-frequency stability, spectral processing, level of the maximum amplitudes, excited state, unstable operation, range of frequencies

Abstract

The article outlines the data of experimental and theoretical studies of the excited state parameters, as well as the conditions of their applicability, allowing estimation of operability of liquid-propellant rocket engine according to high-frequency stability of processes occurring in the combustion chamber at launch.

Informativity of the maximum amplitudes in the frequency bands was estimated on the basis of comparison of their values obtained in tests of some of samples of engines 8D518 and 11D613, which have been damaged due to the high-frequency instability of the working process at launch, and during the tests of engine samples, stable at this mode.

The data on the maximum amplitudes used during the estimation were obtained when processing the magnetic recordings of vibrooverloads in the axial and radial directions, and the pressure fluctuations of fuel and oxidizer at the inlet of a nozzle. The spectral processing of the magnetic recordings was made in the range of 0,9 ÷ 4,4 kHz.

The results indicate the correspondence of the maximum amplitudes to terms of their recognition as informative, because their values obtained from testing of unstable samples of engines are significantly higher than those, which characterize the stable samples. The high level of the maximum amplitudes during unstable operation of the engines at launch is noted almost in the whole range of frequencies (frequency bands) in all four dimensions

Author Biography

Артем Юрійович Демедюк, Dnepropetrovsk National University Naukova 13, Dnepropetrovsk, 49050

Graduate student

References

  1. Сарычев, Ф.Г. Оценка стабильности высокочастотной устойчивости двигателя 8Д724 на запуске в период август 1970 – октябрь 1971 гг : технический отчет №26-140, предприятие п/я Г-4311 [Текст] / Ф.Г. Сарычев, В.Н. Быченков, Л.Л. Рогачев; МОМ, 1971. – 57 с.
  2. Пустыльник, Е.И. Статистические методы анализа и обработки наблюдений. [Текст] / Е.И. Пустыльник – «Наука», М, 1968. – 288 с.
  3. Бернстейн, А. Справочник статистических решений. [Текст] / А. Бернстейн – «Статистика», М, 1968. – 253 с.
  4. Смирнов, Н.В. Краткий курс математической статистики для технических приложений. [Текст] / Н.В. Смирнов, И.В. Дунин-Барковский – Физматгиз, М, 1959. – 436 с.
  5. Шор, Я.Д. Таблицы для анализа и контроля надежности. [Текст] / Я.Д. Шор, Ф.И. Кузьмин – «Советское радио», М, 1968. – 288 с.
  6. Кренделл, С. Случайные колебания. [Текст] /С. Кренделл – «Мир», М, 1967 – 356 с.
  7. Сарычев, Ф.Г. Исследование погрешностей определения параметров возбужденного состояния по данным дискретного спектрального анализа. [Текст] /Ф.Г. Сарычев, В.Н. Быченков, Л.Л. Рогачев; РК техника, серия 7, выпуск 8 – ГОНТИ 9, 1972 – с. 31 – 38.
  8. Харкевич, А.А. Спектры и анализ. [Текст] /А.А. Харкевич – Физматгиз, 1962. – 236 с.
  9. Мошкин, Е.К. Нестационарные режимы работы ЖРД. [Текст] /Е.К. Мошкин – «Машиностроение», 1970. – 336 с.
  10. Методика измерений параметров ЖРД и изделий при огневых стендовых испытаниях. [Текст] / НИИ-229, МОМ, 1965. – с. 5 – 17.
  11. Sarichev, F., Bichenkov, V., Rogachev, L. (1971). Estimation of high-frequency stability of 8D724 engine on start in a period of August 1970 – October 1971. Dnipropetrovsk, Ukraine: Technical report.
  12. Pustilnik, E. (1968). Statistical methods of analysis and reduction of observations. Moscow, USSR: Science, 288.
  13. Bernstein, A. (1968). Reference book of statistical decisions. Moscow, USSR: Statistics, 253.
  14. Smirnov, N., Dunin-Barkovsky, I. (1959) Concise course in mathematical statistics for technical applications. Moscow, USSR: PMSP, 436.
  15. Shor, Y., Kuzmin, F. (1968) Tables for an analysis and control of reliability Moscow, USSR: Soviet radio, 288.
  16. Krendell, S. (1967). Random oscillation. Moscow, USSR: World, 356.
  17. Sarichev, F., Bichenkov, V., Rogachev, L. (1972). Research of errors of parameters of the excited state determination from data of discrete spectral analysis. Space-rocket hardware, 8, 31 – 38.
  18. Harkevich, F. (1962). Spectrum and analysis. Moscow, USSR: PMSP, 236.
  19. Moshkin, E. (1970). Nonsteady state of liquid-propellant engine operation. Moscow, USSR: Mechanical engineering, 336.
  20. Research institute-229 (1965). Methods of liquid-propellant engine parameters measurement during the fire bench tests. Moscow, USSR: MOM, 5 – 17.

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Published

2013-04-25

How to Cite

Демедюк, А. Ю. (2013). Estimation of rocket engines highfrequency stability on start. Eastern-European Journal of Enterprise Technologies, 2(7(62), 53–57. https://doi.org/10.15587/1729-4061.2013.12389

Issue

Vol. 2 No. 7(62) (2013): Applied mechanics

Section

Applied mechanics

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Copyright (c) 2014 Артем Юрійович Демедюк

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