Papers by Keyword: Ballistics

Abstract: Ballistics is the science and dynamics of a moving projectile. This field helps to understand the accuracy of different projectiles, from bullets to rockets. Ballistics is based on physics, particularly Newtonian mechanics, and plays an important role in the defense industry, as well as space exploration, sports, and many other areas of life. The study of ballistics is broadly divided into four distinct segments: internal, transitional, external, and terminal ballistics. Each segment provides insight into a particular stage in the projectile's life.External ballistics plays an important role in the study of the movement process of the bullet during its movement, in understanding and optimizing the principle of operation of firearms, artillery and other ballistic systems. Understanding external ballistics is critical in firearms, artillery, archery, and even sports such as golf and baseball. In this article, we will delve into the ins and outs of external ballistics and explore the various factors that affect projectile range.

Abstract: In this study, dynamic analysis of carbon plain weave square plates with different damage patterns including pattern of post-low velocity impact and patterns of post-ballistic impact is considered. For this purpose, vibration tests are performed to present the vibration characteristics of the four-edge clamped square plates. Effects of bullet-tip geometry, projectile velocity and impact damage location on the vibration characteristics are examined experimentally. Results are given in graphical form.

Abstract: The role of fire control system is to orient the gun at proper position to hit the moving target accurately. Aim of this paper is to study the different approaches and to analyze the gun ammunition characteristics to hit the aerial target. The described approaches would help in the selection of killing range. These approaches have been implemented with the experimental data generated for guns. The experimental data has been analyzed for suitability of particular technique under different circumstances. This work contributes in prediction of firing angle that includes ballistic offset and lead angle above the angle of sight to engage a moving target from static tank.

Abstract: To investigate the effect of design parameters with statistical characteristics on ballistics performance, sensitivity analysis of the flight range objective with respect to relevant parameters was conducted to demonstrate it. Statistical parameters were modeled using an iterative method in order to determine descriptive statistics for further sampling. Simulation of flight range based on a dynamics model was then carried out. Finally, sensitivity derivatives from the baseline design scheme were calculated to locate the most sensitive parameters which can be controlled specially for better performance. Results show that by sensitivity analysis, thrust parameters affect the flight range objective obviously while others not, which provides suggestions about whether some parameters should be limited in a range or not.

Abstract: Machined titanium chips are normally recycled as non-ferrous scrap metal, however, one approach is to recycle titanium chips to construct as lightweight sandwich panel with high energy absorption capabilities. The development of advanced ballistic protection systems that are lightweight while still providing superior energy absorption capacities is a challenge. This study reports the ballistic impact performance of sandwich panel made of Kevlar woven fabric and recycled materials, namely, titanium chips. Titanium is a lightweight material compared with steel however possesses much stronger energy absorption. Sandwich panels were constructed using titanium chips, together with layers of Kevlar woven fabric and a polymeric material. The enhancement of Kevlar woven fabric with titanium chips further strengthens sandwich panel especially in ballistic impact performance. Ballistic impact tests using a nitrogen powered gas gun firing projectiles with impact velocities range from 300 - 350 ms^-1 was carried out. Bonding of the titanium chips with a polymeric material is crucial for the overall ballistic performance. This study proved that reduction in layers of Kevlar fabric is possible by substitution of lightweight material such as titanium chips as energy absorption materials.