Award Data

Silicon carbide promises near-term insertion in high power, high temperature, applications. The wide band-gap and consequent high breakdown field of silicon carbide theoretically allows efficient high power solid state power amplifiers. Its high thermal conductivity will permit compact devices and high power density. To date, virtually all silicon carbide-based devices have been fabricated using 6 ...

THE COAST GUARD USED VELOCITY FIELDS FROM VARIOUS OCEAN CIRCULATION MODELS TO PROVIDE INPUT INTO TRAJECTORY MODELS WHICH ARE USED IN SEARCH PLANNING TO DETERMINE SEARCH AREA MOVEMENT. STATISTICAL TECHNIQUES (CALLED OBJECTIVE ANALYSIS), WHICH ARE APPLICATIONS OF THE GAUSS-MARKOV THEOREM, ARE USED BY THE OCEANOGRAPHIC MODELING COMMUNITY TO COMBINE OBSERVATION DATA WITH DYNAMICAL MODELS TO PROVIDE AC ...

We proposed in collaboration with Pratt & Whitney to develop advanced coating technology for high-performance gas turbine components, utilizing our innovative, patented, pollution-free, low cost Jet Vapor Deposition process. The JVD process uses supersonic jets in "low vacuum" to propel atoms, molecules, or clusters toward substrates. JVD offers: (1) extremely high rates of concentrated, efficient ...

During aircraft turbine engine operation, augmentor (afterburner) operation is often associated with combustion instabilities (oscillations) that can be potentially detrimental to the turbine engine if the resonant amplitude levels are excessive.Oscillation in the frequency range of 50-100 Hz is commonly called

The Phase I efforts aimed at establishing the feasibility of Air Film Damping for controlling vibration induced high-cycle fatigue (HCF) in gas turbine engine components. To establish this goal, current commercially available finite element software wasutilized to develop a methodology for predicting the effects of Air Film Damping on dynamic response of simple components such as beams and plates ...

Rain and dust erosions on aircraft forward facing surfaces such as leading edges, engine inlets, nose radomes, propeller blades, and antennas are serious problems. Due to increasing optical missile threats more low gloss rain erosion coatings are beingused. Current commercial lusterless gray rain erosion coating failed the rain test within 36 minutes when tested at 500mph under 1

As we look towards the next decade there are many opportunities to enhance services for navigation which compliment, enhance, and replace existing Aids to Navigation technologies. This Phase II project will continue the US Coast Guard¿s investigation of the development of a Virtual Aids to Navigation system by building a working prototype that delivers real-time data to the mariner. The vATON s ...

The double-clad multicore fiber laser has proven to be the most efficient, optically-pumped laser. In Phase I, we have demonstated that phase-locking occurs spontaneously among a group of closely packed single mode fiber lasers configured isometrically ina common cladding. This result suggests that, by using our unique power combining technique developed at PC Photonics Corporation, high power o ...

Scheduling is a complex, NP-hard problem that challenges the use of any single solution technique. In Phase I, we built a model that uses our multi-technique Quantum Leap Problem Solving Engine to solve a representative but simplified version of the AirForce Satellite Control Network (AFSCN) contact scheduling problem. The system demonstrated that it could schedule the hundreds (500 to 600) of t ...

It is proposed to develop a full prototype next-generation semi-flush flasher system for airport runway approach lighting. Current systems are many years old and inefficient; airports need inset flashers to add runway length and more efficiently use strictly limited land allocations. An inset flasher is proposed that is optimized both optically and electrically. A flasher fixture based on the P ...