Award Data

ABSTRACT:A joint experimental and computational project using a carefully designed, flexible test article is proposed to assess the velocity-coupled combustion response of a representative liquid rocket injector element to transverse acoustic disturbances. In the proposed Phase II, the response of an injector flowfield at supercritical pressure conditions will be simulated, measured, and reduced i ...

ABSTRACT:In this effort, we will couple the energy of focused microwave bursts into the air and onto surfaces by first forming a laser plasma. The presence of the laser plasma allows much lower microwave intensities to couple their energy to the laser-pre-ionized surface or air- volume, allowing more efficient energy-transfer and the use of lower-power microwave systems to achieve the desired effe ...

ABSTRACT: A phase II program is proposed leading to integrate wireless inductive power transfer technology on two prototype tactical vests. The focus of the phase II program would be the development and evaluation of a full-scale inductive power transfer system on a PRC-152 radio by both modifying and interfacing its battery. Because a mating vest/pouch that contains inductive charging circuits so ...

ABSTRACT:Todays analysts need improved 3D visualization tools to assist in critical situations such as deconfliction, line-of-sight analysis, air space and satellite control.Currently available 3D displays cannot provide the level of detail and comfort needed because the displays contain unacceptable visual artifacts, do not provide full parallax, require special headgear, and induce nausea in man ...

ABSTRACT: Stainless steel ballscrew components, such as those found in landing gear and flap actuators on the C-130 aircraft, experience wear and subsequent failure due to corrosion, contamination and foreign object damage (FOD). High"dither"conditions, where the actuator undergoes a constant short-travel, high-frequency movement to maintain level flight, can also induce wear on actuator ballscr ...

ABSTRACT: Si photonic devices based on GeSn materials will be very important for the MWIR. The Air Force recognizes the need for next-generation high-performance photonic materials in the SWIR to MWIR infrared spectrum, due in part to the atmospheric high transmissive windows in this wavelength ranges. Due to materials limitations, silicon based photonic devices have not been utilized in this wa ...

ABSTRACT: A challenge which continues to present a barrier to the utilization of AM and wide spread adoption is knowing when to use the technology. This is particularly problematic in aerospace and in MRO operations because the technology is still emerging, and knowledgeable, experienced practitioners remain in short supply and will likely remain so until the next generation of technicians and en ...

ABSTRACT: Desired tactical requirements for unmanned aerial systems (UASs) exceed current capabilities for performance, reliability, maintainability, cost and supportability. Mission requirements such as extended endurance, increased power for auxiliary/sensor systems, and low altitude, low speed maneuverability are becoming paramount, specifically, in the 10,000 lb class of vehicles. These desir ...

The purpose of this Phase II program is to develop an innovative, low cost, all-in-one surgical instrument for performing cricothyrotomies and managing airway trauma on the battlefield, with improvements aimed at ultimately reducing mortality rates associ

Ignition of rocket motors can be performed using low-volt firing components, but MIL-STD-1901A requires mechanical isolation for safety. While traditional safe & arm devices are available, they are relatively large and heavy. Recent progress in MEMS has developed miniature safe & arm devices for low-cost munitions such as 40MM grenade and airburst munitions. The Black Hills Nanosystems team has ...