Award Data

"The acoustic signature generated by test articles in high speed wind tunnel tests is difficult to measure due to the high level of background noise created by the wind tunnel flow. A unique research program using microphone arrays is proposed to addressthis issue. The program combines experimental tests and analytical algorithm development to devise a system able to reject the undesirable wind tu ...

"Current man portable antennas are heavy, rigid, telescoping or umbrella like contraptions, which limit the mobility and speed of a deployed unit. We propose to improve the weight, storage size, and ease of deployment of a portable antenna through the useof electronic textiles as described in this proposal. Planar antennas have been manufactured on thin films and rolled into position, however a ri ...

"A multi-channel transmit array is to be developed for high-speed digital communications and radar applications. Digital beamforming (DBF) will be combined with direct digital synthesis (DDS) waveform generation to achieve a system capable of using bothwaveform diversity and spatial diversity. Multiple simultaneous transmit beams will be generated that may be configured and scanned digitally. Usin ...

"We propose to investigate the feasibility of using Avanti's self-aligning kinematic optoelectronic mounts for active 3-D RF/optoelectronic microstructures. We believe the unique benefit of our approach is the precision alignment of optoelectronic devicesfor coupling to the outside world (and layer-to-layer). This unique benefit is coupled with additional benefits of easy manufacturability, direct ...

"New materials and processing techniques are needed to provide a high power storage device for usage in a hybrid electric vehicle (HEV). AVEKA has developed a unique nanophase V205 material that is capable of storing and delivering large amounts of energyin a short period of time. AVEKA will utilize its proprietary coating technology to form a nanocomposite laminate from this material which can ...

"AVEKA, Inc. proposes the use of nanophase aluminum/hydrocarbon slurries produced by its proprietary process with a novel gelling agent to form an inexpensive gelled propellant. AVEKA's Gas Evaporative Reactor (GER) process produces nanophase aluminumslurries in hydrocarbon fluids. These slurries can be gelled easily using a unique, low molecular weight gelling agent. An ability to "melt" these ...

"We propose a directional, broadband, highly efficient underwater acoustic transducer using a baffled cylinder made out from piezoelectric single crystals. The prospective application areas will be for an underwater acoustic modem communication andAutonomous Underwater Vehicles (AUV), in which high efficiency of the transducer system is required due to the limited energy availability (battery) an ...

"This proposal is for the development of a high sensitivity pressure gradient acoustic motion sensor (accelerometer) of the flexural plate type using piezoelectric single crystals. The pressure gradient acoustic motion sensor is based on flexural plateelements operating below resonance in the accelerometer mode. The high piezoelectric coefficients for single crystals is ideal for increasing the ...

"Pump inducer suction performance is directly linked to turbopump rotational speed and weight. It has become standard practice to use boost pumps to provide higher inlet pressure to main turbopumps. This allows for higher speed, lower weight, and moreefficient turbopumps. Propellant tank pressure is also minimized. However, the boost pumps add to the weight and complexity of the propellant ma ...

"Coprime proposes to investigate the applicability of learning-based source separation methodologies to the problem of multiple targets in a complex acoustic environment. The Phase I effort will focus on identifying viable learning-based source separationalgorithms specifically tuned to the multiple combat vehicle scenario. A prototype architecture will be developed and numerical software rapidly ...