Award Data

High power transducer boots must undergo one of the most stringent stress profiles of any underwater encapsulation. Added to the hydrostatic and vibratory fatigue stresses are the problems that come with moving frictional contact - abrasion and heating. Abrasion resistant materials are typically not heat resistant, and fatigue resistant materials are not good at sustaining heat, abrasion, and we ...

THE PROBLEMS OF ATTENUATING DUCTED NOISE AND DISTRIBUTED NOISE ARE ADDRESSED USING ACTIVE NOISE CANCELLATION TECHNIQUES. FOR DUCTED NOISE, A COMBINATION OF COMMERCIAL ANC EQUIPMENT WITH LOW PRESSURE DROP MUFFLERS IN AN SVS PROPRIETARY CONFIGURATION WILL BE EXAMINED. COST AND PERFORMANCE TRADES BETWEEN THE ACTIVE CONFIGURATION AND PASSIVE MUFFLERS WILL BE MADE AND AN EXPERIMENT WILL BE DESIGNED FOR ...

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The objective of agile manufacturing is to increase competitiveness of the US manufacturing base, while addressing DoD priorities, with a combined goal of improving US global competitiveness and national security. To achieve this objective, significant changes in technology and infrastructure must occur. This proposal addresses a significant component of these required changes, a Next Generation C ...

The proposed program will concentrate on the design of pulse-amplitude modulators using innovative architectures to overcome the limitations of conventional designs in driving predominantly capacitive loads, such as the modulating anodes of high-power microwave vacuum tubes. The design will necessarily be capable of operation at high pulse voltage levels and at high pulse repetition rates. Typic ...

In this proposal we present a novel approach to aircraft and missile mission and route planning using neural networks. The approach is unique in four aspects: l) it is a proactive planner that looks at the global topographic characteristics of the battlefield environment when generating plans; 2) it uses a cost surface to determine the advantages or disadvantages of moving through an area by integ ...

Critical systems need protection from power failure in the field environment. The current generation of uninteruptible power supplies (UPS) is based on storage batteries. This severely limits power density and causes the size of the unit to rise rapidly as the discharge time required increases, since most of the weight and size comes with the batteries. Replacing the storage batteries with a syste ...

Phase I of this project will provide an automated active sonar mutual interference (MI) planning module design and proof-of-concept demonstration with the following innovative elements: Methodology for predicting MI levels, characteristics, and timing from a transmitting sonar to a receiving sonar based on the sonar type and setups of each ship, range and relative aspect angle, and propagation fac ...

SPEC proposes to develop a high throughput emulator chip which will provide direct execution of existing AN/AYK-14 and/or MIL-STD-1750 standard codes on commercially available 32-bit microprocessor workstations and PCs. The emulator chip will provide a low cost and time saving technology for transferring military programs from AN/AYK-14 and/or MIL-STD-1750 computers to low cost, high perform ...

The photonics mast (PM) and integrated ESM mast outer sensor heads/housings planned for advanced submarine (NSSN) system applications will be exposed to demanding structural loads and severe environmental exposures. The PM housings must be able to withstand hydrostatic loads, hydrodynamic loads, underwater explosive shock, mechanical wave slap shock, wind loads, thermal shock, and exposure to ...