Fesenko S. Influence of penetrating acoustic radiation on the polyaggregate suspension of the gyroscope and measurement error at the resonance level

Dissertation on the receipt of scientific degree of candidate of engineering sciences after specialty 05.11.03 – Gyroscope and navigation systems. – National Technical University of Ukraine «Igor Sikorsky Kyiv Polytechnic Institute», Kyiv, 2017. The dissertation is devoted to the penetrating study of the nature of the occurrence of the caustic zone in the polyaggregate suspension of the float gyroscope, the reasons for the formation of such zones in the suspension, and their development in time and space and the effect on the occurrence of additional errors floating gyroscope on the resonance wave coincidence level. Calculation schemes of elastic interaction of penetrating acoustic radiation with float gyroscope of class DUSU2 are constructed, they provide an opportunity for penetrating analysis of the reasons for the appearance of technological risks of operating conditions due to the formation of the characteristics of the resonant type – provided a large value of the wave size, and a small magnitude of the wave size. In addition, there was a danger of forming another resonance in the suspension – the combined resonance, when the permeability of the case rapidly increases with a certain ratio of the angles of the coincidence and , which leads to an increase in the measurement errors of the device. The content of the wave size of the shell of the body of the float gyroscope is revealed and its significance is determined by the degree of aberration generated by sound waves in it and their influence on the formation of the caustic zone. Semi-particle bench surveys DUSU2-30V were conducted and the possibility of artificial buffer zone formation was established for combating the negative influence of penetrating acoustic radiation on the device, experimentally confirms the degree of expediency of the chosen technical solution, which corresponds to a tenfold reduction of the additional error of the gyroscope to the value instead . The presence in the liquid component of the suspension of the gyroscope, in addition to the cylindrical zone kaustikos, is also established and the flat caustic in the plane of the frame housing. Experimental studies have shown that in a closed volume of the cavity of the body during irradiation - local and global features of the motion of the fluid are formed. Due to the volumetric nonlinearity of the cavity of the casing, the primary-static state of the fluid substantially changes , and acquires the structure of a powerful moving fluid in the form of circulation, as well as flowing local flows of significantly less power. Experimentally proved the presence of upward heat fluxes and temperature jumps in the liquid part of the suspension of the gyroscope, which significantly change the initial static state and generate a stochastic structure gradient of heat, which is not able to regulate the heat shield. Solve complex problems for the defense industry: analyzes and views the importance of masking and limited noteworthiness of certain types of military equipment – a trench for a tank in open-type fortifications, submarines, and deck aircraft.