Applications of Supercavitation Drag Reduction Technology in Naval Gun Underwater Attack and Defense Warfare

Directed Energy and Fleet Defense: Implications for Naval Warfare

Naval Undersea Warfare Center Division Newport , Rhode Island THE a ~ FILTER IN DRAG WITH DATA ASSOCIATION

The well-known a(3 filter achieves its best performance when measurement outliers are rare. Two modifications of the a(3 filter are presented for improving its performance when outliers are commonplace. The a f3 J-l filter uses a drag coefficient to ensure that the target motion model has a finite asymptotic velocity variance. Although the af3J-l filter is less sensitive to outliers than the a ...

synthesis of 3-aryl-2h-benzo[b]-1,4-oxazines in [omim]bf4 and reduction of organic compounds in methylimidazolium formate

در این پروژه ترکیبات 3-آریل-2h-بنزو[b]-4،1-اکسازین ها از مواد اولیه تجاری مشتقات دو آمینو فنول و ?-هالو کتون های آروماتیک در مایع یونی 1-اکتیل-3-متیل ایمیدازولیوم تترا فلورو بورات([omim]bf4) سنتز شده است. این واکنش توسط باز پتاسیم کربنات محلول از طریق o-آلکیلاسیون و سپس یک واکنش آمیداسیون درون مولکولی خود بخود در مدت زمان کوتاه انجام می شود. ترکیبات 4،1-بنزوکسازین به این روش با بهره خوب تا آلی ...

Ahmad, A. 2010. Tactics of Attack and Defense in Physical and Digital Environments: An Asymmetric Warfare

Asymmetric warfare is frequently described as a conflict between two parties where the ‘weaker’ party aims to offset its comparatively fewer resources by making use of particular tactical advantages. This paper develops a concept model that captures the leverage available to the ‘weaker’ party over the ‘stronger’ party simply because the former is attacking rather than defending. Points of leve...

Some anatomical problems in naval warfare.

In general, our problems have been concerned with the determination of conditions of work which allow personnel to perform certain routine operations (such as the loading of a heavy gun) precisely, rapidly, and with the minimum of fatigue and discomfort. Having established these conditions by experiment, the results are then applied to the design ofmachines or weapons as far as mechanical requi...