Trajectory modification of a transonic spherical projectile under Hop-up mechanism

Failure mechanism of monolayer graphene under hypervelocity impact of spherical projectile

The excellent mechanical properties of graphene have enabled it as appealing candidate in the field of impact protection or protective shield. By considering a monolayer graphene membrane, in this work, we assessed its deformation mechanisms under hypervelocity impact (from 2 to 6 km/s), based on a serial of in silico studies. It is found that the cracks are formed preferentially in the zigzag ...

Transonic and Supersonic Overtaking of a Projectile Preceding a Shock Wave

In this paper, two-dimensional and axisymmetric, time dependent transonic and supersonic flows over a projectile overtaking a moving shock wave are considered. The flow is simulated numerically by solving full time averaged Navier-Stokes equations. The equations are linearized by Newton approach. The roe’s flux splitting method, second order central difference scheme for the diffusion terms, an...

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...

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...

Three Dimensional Transonic Flow Computations Over a Projectile and at the Base Region