Kinetic Ammunition Research Articles

Development and experimental verification of the new WHA sinters intended for kinetic energy projectiles

AbstractDepleted uranium (DU) and tungsten heavy alloys (WHA) are commonly used as kinetic energy projectiles penetrators due to their excellent properties such as remarkably high density and strength which significantly affect their armor penetration capabilities. This article presents the results of laboratory and field tests of the new WHA sinter which summarize the results of a development project intended to increase the strength of the above-mentioned sinters used in the production of kinetic ammunition. The alloy with the composition W91–6Ni–3Co was used for the tests. The obtained alloy was subjected to cold swaging deformation with reduction of 25%. The parameters of individual technological processes were determined based on previous research. These studies concerned the impact of the degree of cold swaging deformation on the mechanical properties of the 91W–6Ni–3Co alloy. The above-mentioned work presents the results of UTS test, Charpy impact strength measurement, hardness and microhardness measurement, and the results of WHA microscopic observations in two states: after heat treatment and the final state after cold swaging deformation with reduction of: 25%. The next purpose of the research was to check the strength and functioning of the new WHA rods used in 120 mm sub-caliber projectiles. This examination was crucial for the completion of this research project, and its results enabled a synthesis of laboratory results and experimental tests.

Mathematical model of the impact of 12.7 mm kinetic action ammunition on an armored obstacle with additional armor

Abstract. In today's conditions, there is a need to find new and effective ways (means) to protect armored vehicles and increase their protection against modern means of destruction, as evidenced by the analysis of the damage received by armored vehicles during the repulsion of armed aggression against Ukraine.
 Various methods and means of additional protection always require practical verification of their feasibility.
 The purpose of this article is to present the main approaches to assessing the level of stability of an armored obstacle with additional armor and to build a mathematical model of the impact of 12.7 mm kinetic munitions on an armored obstacle with additional armor based on experimental data.
 To assess the relative properties of the armor barrier to the destructive energy of the munitions, the experimental-statistical method of mathematical modeling of the process of influence of the energy of the munitions on the armor barrier of armored vehicles was used, in which the experiment is considered as the main source of information about the process, and the methods of probability theory and mathematical statistics are the main means of processing the results of the experiment.
 The experimental study allowed to check the resistance of the armored barrier with additional armor to ammunition of 12.7 mm caliber, which destroys it under the action of kinetic energy.
 As a result of a multifactorial experiment, experimental data were obtained. Using the experimental data, a mathematical model of the impact of 12.7 mm kinetic ammunition on an armored obstacle with additional armor was built, which takes into account the angle of the meeting of the munition with the armored obstacle, the distance from the armored obstacle to the additional armor, the thickness of the additional armor. This mathematical model can be used to find the optimal additional armor of armored vehicles, taking into account the angle of inclination, the distance of additional armor to the main armor and the thickness of additional armor.

REALIZATION OF BASIC METHODS AND MODELS OF PROTECTION FOR LIGHT MASS CATEGORY COMBAT VEHICLES FROM KINETIC AMMUNITION

The protection of light mass combat vehicles from kinetic ammunition is formed as a complex task of determining the patterns of influence of design factors, characteristics of damage means and conditions of combat use on the ability to withstand small arms and low caliber automatic guns. Parameterized armored hulls models of light mass armored vehicles, which are located on the territory, which is also parameterized, has been developed. The weapon caliber and the type of ammunition are also taken into account as parameters that interact with armored hull elements. On this basis, the construction of three-dimensional tactical diagrams of armor-resistant is built. Characteristic influences of various parameters are determined on zone’s shape and size, from which the damage of light mass combat vehicles is possible. This gives an opportunity to substantiate the design parameters of the protective elements of these machines by the criterion of protection against the action of kinetic ammunition. In addition, the basis has created for the development of tactical techniques in order to minimize the likelihood of their destruction, taking into account the conditions of combat operations, including terrain.

COMPETITION BETWEEN TANK ARMOUR SYSTEMS AND KINETIC AMMUNITION

The article presents development of battle tanks armours during the last 100 years on the base of literature review considering aspects of the advancement in defence technologies and the threats of asymmetric and full scale military conflicts. Selected designs of tanks which were in the service were studied to assess defence capacities of tank armour systems and their resistance against penetration by kinetic am-munition.

Providing of tactical and technical characteristics of military caterpillar and wheeled vehicles on stage of design researches

The paper contains a statement of the problem to ensure performance characteristics of military tracked and wheeled vehicles at the stage of design research. A method of adapting a generalized parametric modeling to solving problems of dynamics analysis and durability of elements of military tracked and wheeled vehicles. We consider particular problems associated with the contact interaction of elements of military vehicles, interaction of shock wave loading hulls with light armored cars, the impact of jet impact forces on the strength of hulls, as well as the interaction of the kinetic ammunition with armored obstacle. During the study used modern software systems. Designed methodological approach combines the flexibility and adaptability by appropriate modification of the operator describing the processes and conditions. The important point is that at this time to address the problems of the analysis is the ability to use powerful software systems that implement, for example, a finite element method. Thus, the combination of these instruments on the basis of the proposed methodology makes it possible to develop a parametric numerical models that can be directly used for the project to ensure tactical and technical characteristics of advanced domestic military tracked and wheeled vehicles. The developed methods and models can be applied to the solution of armored vehicles parameter study problems of elements of objects according to the criteria of strength, security, accuracy of fire