10.14489/td.2024.05.pp.030-043

2024, 05 May

DOI: 10.14489/td.2024.05.pp.030-043

Klyuev V. V., Bobrov V. T., Bobrenko V. M., Borisov A. A., Kaloshin V. A., Lyovochkin P. S., Slyadnev А. M.
RESEARCH, DEVELOPMENT AND IMPLEMENTATION OF METHODS AND TECHNOLOGIES OF ACOUSTIC STRAIN GAUGING OF SPLIT JOINTS OF LIQUID ROCKET ENGINES FOR SPACE LAUNCH VEHICLES
(pp. 30-43)

Abstract. A review of the results of research, development and implementation of methods and technologies of acoustic strain measurement of split joints of liquid rocket engines for space launch vehicles is presented. A brief description of methods for measuring the incremental time of propagation of ultrasonic longitudinal waves and the ratio of longitudinal and shear wave velocities is given. The description of the developed and enacted GOST R 52889‒2007 “Non-destructive testing. Acoustic method of control of tightening force of threaded joints. General requirements”. Acoustic strain gauges, including those in regular operation at NPO Energomash, are described. A brief description of the specialized program “Acoustic Tensometer” is given, as well as a set of standard samples for performance control and preliminary adjustment of devices and calibration bench. The method of acoustic tensometry based on the ratio of longitudinal and shear wave velocities proposed by the specialists of NPO “Energomash” is described. The application of the method of acoustic strain gauge tightening of detachable joints, along with the improvement of the LPRD production technology, made it possible to completely eliminate leakage and leakage failure.

Keywords: acoustic strainmetry, liquid-propellant rocket boosters, launch vehicles, detachable joints, leaks, tightening force, instrumentation, software and metrological support, increment method, velocity ratio method.

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V. V. Klyuev, V. T. Bobrov, V. M. Bobrenko (JSC “Research Institute of Introscopy of MSIA Spectrum”, Moscow, Russia) E-mail: Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра. , Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра. , Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра.
A. A. Borisov, V. A. Kaloshin, P. S. Lyovochkin (NPO “Energomash named after Academician V. P. Glushko”, Moscow, Russia) E-mail: Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра. , Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра. , Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра.
А. M. Slyadnev (NPO “Energomash named after Academician V. P. Glushko”, Moscow, Russia 3NPK “Technovotum”, Moscow, Russia) E-mail: Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра.

+ - References Click to collapse

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