Scaled Experiment of the Detonation Control System for the High-Speed Penetration on Concrete

The design scheme and fabrication technology of the detonation control system for the high-speed deep penetration need to be tested for reliability and effectiveness through shooting range tests. However, the shooting range tests of the high-speed deep penetration are so demanding and expensive that it is difficult for the detonation control system to be tested many times. This paper focuses on penetration characteristics of the detonation control system to put forward a laboratory-scaled experiment method with the low impact velocity. Independent parameters of projectile and target affecting the penetration characteristics are effectively analyzed and extracted. A multi-parameter programming method of the scaled experiment for high-speed deep penetration is established. By adjusting the key parameters, the loading conditions of the scaled experiment can be obtained, which can get the comparable deceleration curve with those of the high-speed deep penetration. Finally, the extreme working environment for the detonation control system in the high-speed deep penetration is simulated through the scaled experiment in the laboratory. The scaled experiment method can get the comparable deceleration peak and time history. It is highly economical, and the experimental process is also repeatable, which can provide a reliable reference for the protection design into the projectile.

Chemical Properties of Heavy Metal-Contaminated Soils from a Korean Military Shooting Range: Evaluation of Pb Sources Using Pb Isotope Ratios

In this study, the geochemical properties of heavy metal-contaminated soils from a Korean military shooting range were analyzed. The chemical behavior of heavy metals was determined by analyzing the soil pH, heavy metal concentration, mineral composition, and Pb isotopes. In total, 24 soil samples were collected from a Korean military shooting range. The soil samples consist of quartz, albite, microcline, muscovite/illite, kaolinite, chlorite, and calcite. Lead minerals, such as hydrocerussite and anglesite, which are indicative of a transformation into secondary mineral phases, were not observed. All soils were strongly contaminated with Pb with minor concentrations of Cu, Ni, Cd, and Zn. Arsenic was rarely detected. The obtained results are indicated that the soils from the shooting range are contaminated with heavy metals and have evidences of different degree of anthropogenic Pb sources. This study is crucial for the evaluation of heavy metal-contaminated soils in shooting ranges and their environmental effect as well as for the establishment of management strategies for the mitigation of environmental risks.

Specificity of Socio-Psychological Technologies for Increasing Volitional Self-Regulation of Students-Shooters (On the Example of the Shooting Gallery of the Russian State Social University)

The specificity of socio-psychological technologies for increasing volitional self-regulation of students-shooters of the shooting range of the Russian State Social University has been determined. The socio-psychological technologies used for the development of volitional self-regulation of studentsshooters (information blocks, active forms of work – exercises and games, psychological modeling and playing and analysis of various situations) during the course of classes contributed to the achievement of the goal to an insignificant extent. However, raw scores make it possible to conclude that active forms of work (exercises and games) contribute, first of all, to an increase in the style of self-regulation of behavior and its components such as flexibility, modeling, evaluation of results, planning, programming, and independence.

SHOOTING RANGE IMPROVEMENT AT JUNIOR BIATHLETES USING MODERN TECHNOLOGY

Shooting range improvement to juniors in biathlon is extremely difficult and very important in the training process. The usage of modern technology like SCATT simulator and SKIErg were the main focus of this research. A group of 4 well-trained young biathletes 17-19 years old, with at least 5 years of training experience in skiing and biathlon were recruited as participants. Every athlete had 0.5 hours of SCATT-shooting 3 times per week and 1 hour of SKIerg 4 times per week. All the biathletes had an improvement for all the control test (T1-T4) and after this research is highly recommended that in the training process of the young biathletes to be used the modern technology.