Award Data

As with all service branches within the Department of Defense (DoD), the mission objectives of the Navy are expanding to encompass not only major combat operations, but also asymmetric warfare scenarios. This expanding role requires the Navy to increasingly operate in littoral waters where effective identification of small craft and semi-submersibles is a critical capability for both fleet protect ...

Over-The-Horizon (OTH) radar plays a crucial role in naval situational awareness and the ultimate safety of the naval warfighter and navy assets. Traditionally, OTH detection has been enabled by large land based radars exploiting the interaction of high frequency (HF) radio waves with the ionosphere, but this method is susceptible to instabilities in propagation and the limitations of HF systems. ...

A diagnostic is proposed for aircraft engine exhausts that provides three velocity components at each point in an image of a slice through the plume. The method measures the Doppler shift of laser light scattered from soot particles naturally present in the exhaust, and may also be useful for measuring non-combustion flows outside the exhaust using naturally occurring environmental aerosols. An im ...

We propose to develop numerical methodologies that can be used as alternatives to standard finite-difference time-domain algorithms, and that will offer substantial reductions in numerical complexity (notably CPU-time requirements) without the need to trade-off flexibility for overall robustness. In the initial phase, we propose a two-pronged approach, in which we evaluate two alternatives: (i) a ...

Precise rotation sensors are critical components for stabilization, navigation, and targeting applications. The most sensitive commercial devices are fiber optic gyroscopes based on the Sagnac effect. There is the potential to enhance the performance of these gyroscopes using media with large positive (''slow light') or negative (''fast light') dispersion. In order to ...

CSquared Innovations LLC has developed a novel plasma/laser manufacturing process for solid state thin-film Li-ion batteries which consolidates conventional material synthesis and deposition onto a single platform. This revolutionary technique can produce a fully solid state thin-film Li-ion cell in atmosphere with the ability to conformally apply the battery to nearly any surface. The equipment c ...

Wavelength-division multiplexing has been employed to great success in long-haul transmission systems to increase capacity and provide a new means (wavelength) of routing. Their application to local-area networks (LANs) on aircraft is promising due to the light weight and narrow cross section of optical fiber, as well as fiber"s immunity to EMI. However, the dominant transmission impairments for a ...

This research is dedicated to developing high fidelity lag damper models to significantly improve the accuracy of the analysis of the rotor lead-lag damper forces over a wide range of blade lead-lag motion amplitudes, temperatures, and frequencies in support of aircraft design and engineering applications. The model development will emphasize the dampers with various configurations (e.g., linear ...

Helicopters with articulated rotor blades are subject to the well-known ground resonance where the rotor lag mode interacts, in an unstable fashion, with fuselage roll. To eliminate this ground resonance, both lag dampers and fuselage roll dampers are required. The Sikorsky UH-60 helicopter platform, which comprises the vast majority of utility rotorcraft used by the US Army and the Navy, relies u ...

Existing technologies for geolocation of RF emitters have significant size and weight limitations, restricting their use on small UAV platforms. Quasar Federal Systems (QFS) has developed a method of geolocation using very small antennas; this method is based on measurement of the Poynting vector. The QFS antenna is isotropic, compact, and accurate in its direction finding performance. However, du ...