Award Data

We propose to develop a general method for the high brightness fiber-coupied laser diode system. The overall goal of this program is to deliver a brightness of 1.4 Mega Watt cm-2 sr-1 laser power system from a single fiber with a high power ourput. Thepackage will have high power density, compact dimension and light in weight. As Phase II prototype, the coupling efficiency will over 63% for whol ...

Inserting new high power sensors and electronics on the E-8 aircraft will require highly effective cooling. Diamond substrates cooled by evaporative spray techniques can satisfy requirements for both extraordinary cooling effectiveness and tailorabilityto advanced radar systems. M. S. Sehmbey et al have demonstrated that evaporative spray cooled diamond surfaces can maintain components, with hi ...

The objective of this program is to create a sensor system design utilizing Micro Electro-Mechanical Machine Systems (MEMS) Beam Steering Mirror Arrays and leverage the Streak Tube Imaging LIDAR (STIL) demonstrated previously by Aret¿ . Addition of a MEMSbeam steering array to the STIL technology will provide a low cost high accuracy 3d Imaging solution that meets the required to 2pi Steradian co ...

Superconducting generators and RF magnets will be the leading technologies for high electrical power systems on aircraft, spacecraft and ground based systems in future DoD applications. These systems employ High Temperature Superconducting (HTS) materialsoperating at cryogenic temperatures. Future HTS systems will employ Yttrium Barium Copper Oxide (YBCO) which requires cooling near 65K. At pre ...

Superconducting generators and RF magnets will be the leading technologies for high electrical power systems on aircraft, spacecraft and ground based systems in future DoD applications. These systems employ High Temperature Superconducting (HTS) materialsoperating at cryogenic temperatures. Future HTS systems will employ Yttrium Barium Copper Oxide (YBCO) which requires cooling near 65K. At pre ...

Wavefront sensing in high scintillation environments is degraded in conventional sensors by a coupling, in the measurement, between phase and irradiance variations. An evaluation of this effect, and its impact on performance of systems, such as ABL, isproposed. An innovative wavefront sensor design has been proposed which mitigates this effect by pixel-level processing of the data. The design exhi ...

Phase I work has culminated in a p type doping approach and the formulation of a material/device fabrication approach which can assure high quantum efficiency along with a high R0A performance.Phase II work aims to optimize this p type doping/device fabrication approach and demonstrate high performance 256x256 mosaics of LWIR HgCdTe photodiodes hybridized to Si Read Out Integration Chips.

Phase I work has culminated in a p type doping approach and the formulation of a material/device fabrication approach which can assure high quantum efficiency along with a high R0A performance.Phase II work aims to optimize this p type doping/device fabrication approach and demonstrate high performance 256x256 mosaics of LWIR HgCdTe photodiodes hybridized to Si Read Out Integration Chips.

An innovative and cost-effective technique, based on physical scale-model testing at 1-g, is presented to evaluate the performance of the next generation penetrator missiles designed to take out underground structures. The sub-scale target, an engineeredsystem, can be considered as underground facilities built using tunneling or cut-and-cover construction techniques in a geologic system with varia ...

The overall objective of this proposal is to develop a high temperature, motor drive based on silicon carbide (SiC) power semiconductors for controlling a switched reluctance motor (SRM). This motor drive will be suitable for use in either anelectromechanical actuator (EMA) or an electrohydraulic actuator (EHA). The proposed Phase II effort focus is the additional research and development needed t ...