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The aim of the study was the analysis of the 100mm naval artillery projectile performance and variations in Solidworks and Ansys computational environment. We realized the 3D model in Solidworks and simulation parameters were presented and analyzed in Ansys Explicit Dynamics. The purpose of this paperwork is to analyze 100 mm projectile by using the computational software for armour piercing performance. This paper is a numerical investigation of the complex processes of projectile impact.

The paper proposes a method and a technology that allows the generation of a very high intensity magnetic field, at a high pressure and within an extremely short period of time into a ferrous material, in order to study the behavior of such material from the magnetic and structural perspective. The method consists in producing the "compression" of an initial magnetic flux that is generated in a coil that has inside a ferrous material cylinder (the armature), subject to testing, done by a controlled explosion, so that the magnetization of the armature takes place at very high pressure and temperature, i.e. in extreme conditions. This behavior produces different levels of failure of the communication systems and the results obtained by the authors can be used further in studies regarding protection of these.

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Communications applications in the underwater environment have recently developed a considerable development due to the demand for underwater research with Robot Underwater Vehicle (ROV). The most important aspects addressed by researchers are related to the speed and distance of data transmissions. In most cases, this data signal may be electromagnetic, optical or acoustic. The first two cases have limitations on the distance of the communication channel due to signal attenuation. That is why the acoustic field can be considered the favorite in this choice. In this case, the limitations of use are given by the acoustic field propagation, which depends on the temperature, salinity and pressure of the underwater environment and the result is the variation of the propagation speed. The influence of frequency on attenuation and reverberation are important factors limiting the use of the acoustic field. Based on these considerations, the paper presents an experimental transceiver model of data transmission using Frequency Shift Keying (FSK), modulation with phase discontinuity for transmitting and receiving commands at the speed of 2kbits / s