The electromagnetic launcher is currently being explored as an alternative to propellant gun systems to satisfy the ordnance requirements of future military systems. Recent improvements in component technologies have increased the plausibility of making the electromagnetic launcher a practical alternative to chemically driven guns. The U.S. Army Armament Research, Development, and Engineering C...

We study countries choosing armament levels and then whether or not to go to war. We show that if the costs of war are not overly high or low, then all equilibria must involve dove, hawk, and deterrent strategies and the probability of war is positive (but less than one) in any given period. Wars are between countries with differing armament levels and the frequency of wars is tempered by the p...

^^^ÄThe Advanced Aircraft Armament System (AAAS) was originally chartered to improve armament equipment ^^ performance, support, and interoperability. Because of funding constraints the AAAS Program has been increasingly O . directed to development of air armament interface standards and technology, while advanced concept development ^^ of suspension release and stores management equipment has ...

Two stages gas guns are used for various purposes, particularly for mechanical characterization of materials at high rate of deformations. The performance of a two stages gas gun is studied in this work using the theory of the two-stage gas gun proposed by Rajesh, numerical simulation using combined Eulerian/ Lagrangian elements in Autodyna commercial code and experiment using a two stage gas g...

Tanytarsus lenyae sp. n., T. giovannii sp. n., T. fittkaui sp. n. and T. alfredoi sp. n. from São Paulo State (Brazil) are described and diagnosed, the first as adult male and pupa, and the remaining as male, pupa and larva. The species were collected in areas of Cerrado, at the boundaries of São Carlos city. Complete diagnoses and drawings of the species are given. The imagos can be separated ...