III A missile defense system must be able to deal with an attack containing decoys in addition to warheads. If the defense system does not have enough interceptors to shoot at all the incoming objects, it must be able to discriminate between decoys and warheads. This discrimination process is not perfect and results in two types of errors: leakage (not shooting at warheads) and false alarms (sh...

The need for a new way of thinking in our nuclear age has been lately affirmed by many. Man has become all too powerful; so great is his might that he can annihilate all life on the Earth, his own kind included, a situation that was deemed unthinkable early in this century. Under these new conditions, man cannot afford to think and act solely in terms of the welfare of his own kin, his own comm...

researchers made significant progress toward developing naval-based theater missile defenses during the Clinton administration, the basic NMD architecture had no naval component because that administration sought actual deployments by 2005–2006. Once in office, the Bush administration was determined to accelerate progress on missile defenses, expand research and development efforts, accept a gr...

Co-Continuous Ceramic Composites, referred to as C4, have bi-continuous, interconnected and interpenetrating phases of a metal and ceramic. This bestows such composites with a higher strength to weight ratio compared with traditional composites. In this research work, a C4 composite of AA5083/SiC is fabricated for personal body armour, using gravity infiltration technique. A numerical simulatio...

A near-optimal midcourse trajectory shaping guidance algorithm is proposed for both air and ballistic target engagement mission attributes for generic long range interceptor missile. This guidance methodology is based on the maximum final velocity as the objective function and maximum permissible flight altitude as the in-flight state constraint as well as the head-on orientation as the termina...

Micro-Doppler (MD) caused by the motion of the ballistic missile can contribute to successful recognition of the ballistic missile. Considering the real observation scenario. This paper proposes a method to derive the MD image of the ballistic missile by applying the range-Doppler algorithm (RDA) based on the real flight scenario and analyzes the factor for the real-time MD imaging. Simulation ...

This paper analyzes the properties of a two-field critical gradient model that couples a heat equation to an evolution equation for the turbulence intensity. It is shown that the dynamics of a perturbation is ballistic or diffusive depending on the shape of the pulse and also on the distance of the temperature gradient to the instability threshold. This dual character appears in the linear resp...

In a mesoscopic conductor, electric resistance is detected even if the device is defect-free. We engineered and studied a cold-atom analog of a mesoscopic conductor. It consists of a narrow channel connecting two macroscopic reservoirs of fermions that can be switched from ballistic to diffusive. We induced a current through the channel and found ohmic conduction, even when the channel is balli...

Modern ballistic helmets defeat penetrating bullets by energy transfer from the projectile to the helmet, producing helmet deformation. This deformation may cause severe injuries without completely perforating the helmet, termed "behind armor blunt trauma" (BABT). As helmets become lighter, the likelihood of larger helmet backface deformation under ballistic impact increases. To characterize th...