Vol 8, No 2 (2022): 12.09.2022

Vibration diagnostics in the most effective non-destructive method for testing technical condition of rotor machines. A widely used diagnostic indicator of gear defects is the intensity of the n-dimensional vector from a series of tooth harmonics. For planetary gearboxes of aircraft engines, the higher harmonics intensity is often commensurate with the vibration noise intensity, which reduces the effectiveness of its application. On the example of the tooth flank wear in NK-12 engine differential gearbox, we have demonstrated the possibility of diagnosing this defect based on the intensity of tooth subharmonics.

The paper considers the structure of stands for hydrodynamic cleaning of units in order to ensure optimal cleaning parameters and protection of the pumping station, the features of parallel and series connection of a source of fluid oscillations when creating a pulsating pressure and flow in the cavity of the cleaned hydraulic unit. When calculating the modes of hydrodynamic cleaning of the cavities of the unit in resonant modes, electrodynamic analogies are used. The conducted experimental studies have confirmed the high efficiency of the purification process.

Created in 1982, the Department of Automatic Power Plant Systems by the efforts of Professor Shorin Vladimir Pavlovich, now a full member of the Russian Academy of Sciences, has now turned into a powerful educational and scientific center, in which the educational process is combined with significant scientific research, not only bachelors, masters, specialists are trained, but also highly qualified personnel. In 2010, the leadership of the department passed to Professor Shakhmatov Evgeny Vladimirovich, now an academician of the Russian Academy of Sciences and since 2019 the scientific director of Samara University. The department has a powerful educational laboratory and research base. For forty years, 62 candidates of technical sciences and 18 doctors of technical sciences have been trained. Teachers of the department actively participate in scientific conferences and publish articles in scientific journals. At the initiative of the department, since 2012, six scientific conferences on the dynamics and vibration acoustics of machines with international participation have been held. The scientific journal "Dynamics and Vibroacoustics" was created. Intensive career guidance work is being carried out with applicants and schoolchildren. The department forms new educational programs and modernizes curricula. Thus, the activities of the department make it possible to train young personnel not only for the needs of the Samara region, but also for scientific centers and enterprises of the country as a whole.