Award Data

The general objective of this proposal is to design a self-stabilized monolithic single frequency solid state laser. The main advantage of the approach is based on the integration of a laser cavity within active laser material - Nd-doped photo-thermo-refractive (PTR) glass, which allows constructing narrow line unidirectional, environmental insensitive laser. This glass possesses both properties o ...

Defense Electronics Corporation (DEC) will develop and demonstrate innovative closed-loop control mechanisms for high quality factor Radio Frequency filters or banks of filters for use in frequency-agile radio front-ends. These mechanisms include a hybrid filter control technique using real-time filter response feedback, applications specific integrated circuit (ASIC) or field programmable gate ar ...

ABSTRACT: The objective of this effort is to develop and demonstrate approaches for realizing metamaterial-based micro-electrometrical (MEM) ultra-low-loss non-dispersive phased array antennas for multifunction radar and communication systems in unmanned and micro air vehicles. A metamaterial based Ka-band unit cell will be designed and provide the foundation for a 4 bit phase shifter that will b ...

ABSTRACT: This Phase I SBIR will produce a concept, and algorithms, for a Sensor Suite which can be used as a research tool to characterize strong atmospheric turbulence. Previous and on-going theories, statistics, and empirical data will be evaluated to arrive at an optimal Sensor design concept. That Sensor may exploit the superior resolution and performance inherent in the Radio-Hydro-Physi ...

The overall objective of the proposed effort is to develop an improved ultrasonic consolidation process for metal matrix composites (MMCs). This will be done through the development and validation of multiscale models of the bonding process and the laminated structures produced. These models will facilitate the optimization of the in-coming material, the structural performance of the processed m ...

The objective os this work is to utilize acoustic emission for early detection of cracks in helicopter gearboxes. Cracks will be identified including their location and extent, the system is envisioned to communicate this information as well as the remaining life of the part. Statistical signal processing and conditioning will be a vital part of the work. AbM Engineering, LLC is partnering with Em ...

Under this effort, Sentient will develop mixed-EHL models to predict the performance of fluid film bearings for submarine applications. The models will consider critical design and operational parameters such as component geometry and surface finish, start up and shut down speeds/loads, and lubrication properties to predict torque, film thickness, and associated wear/efficiency. The result will be ...

The United States Navy has identified the need to investigate the use of auxetic fabric for military personnel protective clothing including jackets, shirts, pants, helmets, boots, gloves, and even body armor. Auxetic fabric technology has a unique feature in that it exhibits a negative Poisson"s ratio effect when subjected to an axial load. Auxetic fabric consists of an elastomeric core yarn, whi ...

Our team proposes a unique expendable acoustic source comprised of flexural disc technology in a close packed arrangement that allows for a reduction in resonant frequency and an increase in useful bandwidth. This array will be designed to couple as much energy as possible into the bottom sediments, while coupling as little energy as possible directly into the surrounding water column. This is a d ...

High quality laser materials based on InP, InGaAs, InAlGaAs, and InAs are proposed to develope high power 3 to 3.5 m diode lasers. An adiabatically broadened amplifying section is proposed to reach high power with high beam quality. The active material uses strained layer epitaxy to rely only on high quality laser materials that can be grown by molecular beam epitaxy, and with high quality on InP ...