Signal Measurement of Projectile Penetration Overload Based on Charge Sensor

Wireless Sensor Network-Based Projectile Trajectory Estimation

The report presents a sensor fusion algorithm that was utilized in a wireless sensor network-based acoustic countersniper system. The approach for fusing shockwave TOA data that are generated by supersonic projectiles is able to reconstruct the trajectory with an accuracy of 1 degree in both azimuth and elevation for long range shots. If a few muzzle blast detections are also available then acc...

Multi-objective Optimization of a Projectile Tip for Normal Penetration

The main purpose of the present work is multi-objective shape optimization of a projectile tip for impacting and normal penetrating. Velocity drop, weight and inner volume of projectile have been considered as three conflicting objective functions.  For this purpose, at the first step, finite element modeling was done using ABAQUS/Explicit and projectile penetration was examined in different ge...

Hard projectile penetration and trajectory stability

We present a general framework to describe the dynamics of a hard projectile penetrating into a solid target. Rigid-body dynamics, differential area force law and semi-empirical resistance function are used to formulate the motion of the hard projectile. The proposed model is capable of predicting the projectile trajectory under various oblique and yaw angles. Critical conditions for the occurr...

Analytical and Numerical Consideration of Projectile Density Effect on Its Penetration Ability in Alumina Armor

In this paper, penetration of high velocity impact of 4340 steel and tungsten carbide projectiles with specific shapes in to ceramic armor that includes 10 mm alumina (95%) is considered analytically and simulated with Ls-Dyna software. Bernoulli equation used to consider the penetration velocity in ceramics, shows that the penetration is better and easier by increasing projectile density. The ...

Projectile-charge dependence of ejected-electron spectra.