Boost-phase ballistic missile defense is alluring because rocket boosters are easy to detect and track, they are relatively vulnerable due to the large axial loads on a missile under powered flight, the entire payload (single or multiple warheads and midcourse penetration aids) may be destroyed in a single shot, and countermeasures to defeat boostphase defense are more difficult to devise than ...

This paper proposes the allocation of operating reserve in power systems through competitive capacity markets using a probabilistic approach. The insurance features of operating reserve are used to derive a valuation model that is analytically consistent and reflects the economic value of increased reliability to customers. The model can be expressed in the form of a demand curve for operating ...

The traditional three-loop autopilot[11] suffers from coupling in pitch, yaws, roll channel as well as degraded performance due to huge aerodynamic uncertainties. Sliding mode control is applied to design autopilot for skid-to-turn missile (STT) missile systems to overcome the above stated difficulties. The design has two steps. The first step involves feedback linearization and the second stag...

Today's dynamic battlefield environment requires rapid reconfiguration and reorganization of warfighter assets, communication links, and computing resources in response to enemy attacks. The extent to which supporting operations can take place autonomously, and thus more rapidly, could be critical to neutralizing future enemy threats. This paper describes a software system developed at The Aero...

As modern weapon systems become complex and expensive, there is an increasing need to predict the effectiveness of a new weapon system before the actual development. In this paper, we present an ASW (Anti Submarine Warfare) simulator to measure the effectiveness of a TAS (Towed Array Sonar) on smart phones. Our simulator is composed of Red and Blue submarine model, Environment model (i.e. sea) ...

Anthrax is a zoonotic illness recognized since antiquity. Today, human anthrax has been all but eradicated from the industrialized world, with the vast majority of practitioners in the United States unlikely to have seen a case. Unfortunately, the disease remains endemic in many areas of the world, and anthrax poses a threat as a mass casualty-producing weapon if used in a biological warfare ca...

Debates over how or how not to display intrinsically controversial subjects in a museum setting have been part of museum life for decades. And the Smithsonian Institution on the National Mall in Washington, D.C., has more often than not been a ‘flash point’ [1] for episodes ranging from the interwar controversy over the Langley Aerodrome and Wright Flyer, to the so-called ‘rerun of the Scopes t...

the guidance system. The types of steering commands vary depending on the phase of flight and the type of interceptor. For example, in the boost phase the flight control system may be designed to force the missile to track a desired flight-path angle or attitude. In the midcourse and terminal phases the system may be designed to track acceleration commands to effect an intercept of the target. ...