Starovoit Y. Theoretical basis for the design of the circular sonar arrays formed from cylindrical piezoceramic radiators and the acoustic baffle

The dissertation is devoted to the development of theoretical principles for the design and calculation of circular cylindrical hydroacoustic sonar arrays formed from cylindrical piezoceramic radiators in the formulation of stationary hydroelectroplastic and mathematical physics problems with respect to the radiation of their hydroacoustic signals, taking into account the interaction of electric, mechanical and acoustic fields, and the practical realization of these principles. The developed methods allow systematically to take into account the influence of the structural characteristics of the lattices and transducers in their composition on their physical fields, which interact with each other at the emission of signals. Particular attention is paid to the consideration of the interaction of these fields in the process of transforming the antenna into a grid of electric energy in a mechanical and mechanical to acoustic, interaction of emitters in a grid between themselves and between emitters and the screen by the acoustic field, the reaction of the external and internal environments of the radiators to the excitation of acoustic fields in them, and the dependence of all of these factors on the specific geometric, physical and wave properties of lattice and radiator structures in their composition, namely: in the part of antenna re niches - the number of radiators in the lattice and the distance between them; lattice modes; acoustic screen dimensions; in the part of cylindrical piezoceramic emitters - the type of design, the type of internal filling, the type of piezoceramic material and the type of its polarization. Numerical experiments were carried out for circular antenna arrays and cylindrical emitters in their composition and systematic studies of the properties of electric, mechanical and acoustic fields and their connection between them were performed. Qualitative and quantitative laws of influence of physical fields of geometric, physical and wave characteristics of elements of structures of circular antenna arrays are established. An analysis of the results of numerical experiments obtained during the work was carried out and their physical interpretation was carried out. Сarried out experimental studies. The comparison of the results obtained experimentally with the calculated ones allows us to conclude that the design support for the design of circular antenna arrays formed from cylindrical piezoceramic radiators developed in the work corresponds to the realities of the studied antennas.