Award Data

The goal of the Phase II program is to fabricate high voltage high power converter/inverters for high frequency/high temperature operation using enhancement mode-depletion mode insulating ate AlInN-GaN/i-SiC transistor building blocks. Our technical approach is to use lattice matched AlInN-GaN epilayers in conjunction with a field-plated insulating gate HEMT device design and a fluorine treatment ...

The goal of the Phase I program is to demonstrate the feasibility of our technical approach to grow AlInN lattice Matched Barrier HEMTs on low defect Bulk and quasi-bulk III-Nitride Substrates (GaN). This will be accomplished using our pulsed MOCVD growth technique to deposit AlInN films at a higher growth temperature than conventional MOCVD deposition methods, resulting in better material qualit ...

The deck edge aircraft elevator (ACE), now in use on all active CVs and CVNs, is based on the system design principles established over 40 years ago. This system, while remaining one of the most reliable in the fleet, can be improved upon by employing newtechnology in the areas of drive mechanism, automated control, and self-diagnostic maintenance assessments. In addition to the improvements ava ...

The Hangar Bay Deck Edge and Division doors, on aircraft carriers are in need of modification, in order to minimize maintenance and increase reliability. In both current applications, guide rails are recessed into the deck and collect debris, non-skidgrit, and oily dirt. Additionally, the wire rope system for operating the doors jams, sometimes causing the rope to part, resulting in significant ...

Build and demonstrate a working proof of principle model for validation of the motor design process and verification of the proposed concept. The model will consist of a single sided motor stator, a slotted runner plate, and a cart capable of moving a hanging weight in the horizontal direction. The motor design will allow for the use of an existing motor drive (inverter) without the need for coi ...

INCREASES IN SOLAR CELL EFFICIENCY CAN BE ACHIEVED WITH TANDEM MULTI-JUNCTION STRUCTURES TO IMPROVE THE PERFORMANCE AND SCALE OF SPACE PHOTOVOLTAIC CONCENTRATORS. THE "TOP SOLAR CELL" TANDEM APPROACH COULD INCREASE ENERGY CONVERSION EFFICIENCY BY AS MUCH AS 100%. A SELF-SUPPORTING ALUMINUM-GALLIUM-ARSENIDE (ALGAAS) TOP SOLAR CELL IS BEING DEVELOPED FOR MECHANICAL ATTACHMENT TO A SILICON CONCENTRAT ...

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PHASE I STUDY OF THE FEASIBILITY OF DEVELOPING A ZOOM LENS AS DESCRIBED IN SBIR TOPIC N86-154 IS PROPOSED. THE OBJECTIVE OF THIS STUDY IS TO INVESTIGATE ALTERNATIVE CONFIGURATIONS TO FIND THE ONE MOST EFFECTIVE IN MINIMIZING PRODUCTION COST, SIZE, AND WEIGHT WHILE OFFERING APPROPRIATE OPTICAL CHARACTERISTICS AND PERFORMANCE, REMOTELY ADJUSTABLE FOCAL LENGTH OF 12 TO 30 MM, APERATURE OF F/4, AND FI ...

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"This Phase I program is aimed at demonstrating the principle of an approach for the growth of 4H-SiC boules 50 mm in diameter but of length equal to 50 mm, which is approximately twice the length of boules grown by convential approaches. Also in Phase I,the grown boules will be sliced into wafers, lapped, and polished; the polished wafers will be characterized for structural properties; comparis ...