Basic laws of thermodynamics and mechanics are used to analyse an air gun. Such devices are often employed in outdoor physics demonstrations to launch potatoes using compressed gas that is here assumed to expand reversibly and adiabatically. Reasonable agreement is found with reported muzzle speeds for such homebuilt cannons. The treatment is accessible to undergraduate students who have taken ...

Since the introduction of the term “wound ballistics”[1,2] indicating the study of the wounding mechanisms of missiles [3], extensive experimental research on this field has beenconductedby investigators with a military background [4-7]. In the context of wound ballistics, the term missile is used to denote various types of small projectiles, such as bullets and fragments, that have enough kine...

All measurements, regardless of their purpose, context or quality, possess uncertainty. No measurement is performed with absolute perfection since all are approximations. Uncertainty, however, does not mean there is anything wrong or inappropriate with the results. Uncertainty is simply a measure of the confidence we have in our best estimate and results from limitations in our technology, our ...

Abstract Today, most design processes are carried out using specialized tools in the form of advanced computer software, but case designing weapons (especially internal ballistic) it is not generally available or even classified. On other hand, there no analytical system non-linear differential equations describing phases shot phenomenon barrel weapons. Therefore, order to obtain more accurate ...

The aim of the research is to study the interdependence between the shot moment parameter and the result in shooting simulator training. The article considers the problem of the relationships between a shot moment parameter and a virtual result in training with the SCATT optoelectronic shooting simulator. Special technique is proposed and the experimental investigation with the parallel fixatio...