Full-state single-loop and full-state two-loop autopilot-guidance designs are derived using a linear quadratic differential game formulation. To keep all the states at reasonable values throughout the end-game, a cost function that includes appropriate running cost terms on some of the states is proposed. It is proven that the two designs may be identical under a linear quadratic differential g...

This paper develops a framework to determine the performance or reliability of a complex system. We consider a case study in missile reliability that focuses on the assessment of a high fidelity launch vehicle intended to emulate a ballistic missile threat. In particular, we address the case of how to make a system assessment when there are limited full-system tests. We address the development ...

Large-displacement Lightweight Armor Randomly entangled fibers forming loosely bound nonwoven structures are evaluated for use in lightweight armor applications. These materials sacrifice volumetric efficiency in order to realize a reduction in mass versus traditional armor materials, while maintaining equivalent ballistic performance. The primary material characterized, polyester fiberfill, is...

A steel plate material Hardox can be used also as a core design material for the production of ballistic barriers or traps at the shooting ranges for small arms. The article deals with the results of experiments with shooting weapon systems of a high ballistic performance and with Finite Element Method simulation of the projectile penetration upon the steel plate using the software Ansys Autody...

We analyze the decay of classically chaotic quantum systems in the presence of fast ballistic escape routes on the Ehrenfest time scale. For a continuous excitation process, the form factor of the decay cross section deviates from the universal random-matrix result on the Heisenberg time scale, i.e., for times much larger than the time for ballistic escape. We derive an exact analytical descrip...

The problem of tracking a reentry ballistic object by processing radar measurements is considered in the paper. Sequential Monte Carlo-based filter is proposed for dealing with high nonlinearity of the object dynamics. A multiple model configuration is incorporated into the algorithm for overcoming the uncertainty about the object ballistic characteristics. The performance of the suggested mult...

We calculate the width of the growing interface of ballistic aggregation in the limit in which the range of the sticking interaction between the particles becomes infinite. We derive a scaling form for the width, a n d we compute the shortand long t ime exponents finding U = $ and CI =;. Furthermore, we find that the crossover exponent defining the argument of the scaling function is y = 4. We ...

A differential game guidance law for an endoatmospheric interceptor missile steered by aero fins and reaction jets is developed in this paper with bounded controls. For a low-altitude endoatmospheric interceptor, the propellant of the reaction-jet control system (RCS) is restricted by the missile configuration. Considering propellant limits, the effect of the RCS thrust on homing performance is...

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...