Abstract:Development of high power microwave (HPM) sources for Air Force applications requires cathodes with long usable lifetimes, negligible anode-cathode (A-K) gap closure, reproducible functioning under high repetition pulsing, uniform current density, and negligible plasma/current production from nearby… more
Abstract:APPROXIMATELY 210 BILLION DOLLARS WAS SPENT IN 1992 ON CORROSION IN THE UNITED STATES. ACCORDING TO THE NATIONAL ASSOCIATION OF CORROSION ENGINEERS, THIS IS ROUGHLY FOUR PERCENT OF THE GNP. MANY METHODS OF DETECTION HAVE BEEN DEVISED WITH SOME SUCCESS. HOWEVER, AS THE NUMBERS REVEAL, THE PROBLEM… more
Abstract:Development of an Inertia Measuring Unit (IMD) to be packaged in a strapdown Inertial Navigation System (INS) is proposed. The IMU design is based upon the silicon accelerometers developed by Waddan Systems. A pair of these devices, mounted on inclined webs in a hollow cylindrical rotor with their… more
Abstract:Development of an Inertial Measurement Unit (IMU) for a low cost miniature gun launchable Inertail Navigation System (INS) to be packaged within a 60 mm projectile is prosed. The IMU sensor cluster design proposed is based upon the inertial silicon sensors produced by Waddan Systems. A pair of the… more
Abstract:Development of a low-cost six degree of freedom inertial measurement unit on single silicon chip for use in evaluation injury potential of aircraft crew escape systems is proposed. The design is based upon the silicon micromachining technology developed by Waddan Systems. The highly integrated chip… more
Abstract:We propose an information retrieval product for networked information systems using a new technique called "reference based retrieval" (RBR). The product is a smarter server/navigator for selecting the most appropriate objects for a user by using adaptive techniques using feedback from the users. By… more
Abstract:Strong, durable and vacuum tight seals between SiC or diamond films and copper and other materials are needed for high density packaging/interconnect applications. Presently, there are many problems in joining these very dissimilar materials to form reliable and strong bonds. Most of these problems… more
Abstract:The objective of the proposed research is to develop a small, light-weight, broad-beamwidth, multi-octave antenna which has a useable gain of over 0 dBi and which can operate without degredation of these characteristic parameters in the presence of a 3.3 watt per meter-square power density. By using… more
Abstract:Wang-Tripp Corporation (WTC) prposes a six-month Phse I exploratiory research and development effort to design a UHF Satellite Communications (SATCOM) antenna for beyond-line-of-sight communications, and participation in Navy communications nets. Curretnly availabe UHF SATCOM antennas are unsuitable… more
Abstract:We will make a major improvement in the safety of operation of Liquid Encapsulated Czochralskicrystal pullers used in the growth of gallium arsenide. The hazard is caused by the presence of finelydivided arsenic dust on the inside of the pullers after growth. Some of this is believed to convert… more
Abstract:We propose to use the 'double-crucible' technique to grow semi-insulating gallium arsenide crystals which are of uniform stoichiometric composition from seed to tail, and are free from arsenic precipitaties. The nature of the phase diagram suggests that this approach should be very effective in GaAs… more
Abstract:POLYCRYSTALLINE DIAMOND FILMS IN AN AS-DEPOSITED CONDITION DO NOT PROVIDE THE REQUIRED OPTICAL QUALITY TO REDUCE SCATTER SUFFICIENTLY FOR MANY APPLICATIONS. A RESEARCH INVESTIGATION WILL BE CONDUCTED TO DETERMINE THE FEASIBILITY OF ACHIEVING AN OPTICAL-QUALITY SURFACE FINISH BY USING… more
Abstract:RECENT ADVANCEMENTS IN MACHINE VISION TECHNOLOGY AND KNOWLEDGE-BASED EXPERT SYSTEMS HAVE RESULTED IN POWERFUL, COMMERCIALLY AVAILABLE SYSTEMS FOR IMAGE ANALYSIS AND INTERPRETATION. COMPOSITE MATERIALS RESEARCH HAS DEMONSTRATED THE EFFECTIVENESS OF EMPLOYING IMAGE PROCESSING TECHNIQUES TO PROVIDE… more
Abstract:THE RAPID AND ACCURATE MEASUREMENT OF INTERNALLY THREADED HOLES IS ONE OF TODAY'S MORE DIFFICULT MEASUREMENT PROBLEMS. THIS IS PARTICULARLY TRUE IN LIGHT OF THE RECENTLY ADOPTED FASTENER QUALITY ACT (PL 101-595/HR3000) AND MIL-SPEC 7742D FOR CLASS 3 SAFETY-CRITICAL FASTENERS. QUEST HAS PREVIOUSLY… more
Abstract:Acoustic lens design is proposed for the fabrication of underwater sonar systems for target acquisition. Building upon the vast knowledge of earlier acoustic lens research, the proposed study emphasizes the system integration with the objectives of compactness - both in size and weight, high… more
Abstract:The high-speed rotary handpiece is used for drilling, cutting, and grinding in modern dentaltreatment. Emergence of HIV and AIDS has highlighted deficiencies in the current handpiece design,bringing recognition of its potential role in the transmission of infectious diseases. Current… more
Abstract:Aluminum nitride (AlN), an electronic substrate material, is a promising ceramic for high-temperature structural applications. The self-reinforced AlN to be developed in this project will have room-temperature properties of 1000 MPa flexural strength and 7 to 8 MPa.m 1/2 fracture toughness. The… more
Abstract:The rigid-flex printed wiring board (PWB) is the state-of-the-art in electronics circuitry development. It offers the most in board configuration flexibility for making optimal use of space in electronic packaging, improving performance of electronics packages, and reducing maintenance. However,… more
Abstract:QUEST Integrated, Inc. proposes the development of a laser-based inspection instrument for the assessment of the condition of solid propellant in a solid rocket motor. The device will consist of an intrinsically safe, noncontacting rotating head that will employ laser triangulation techniques to… more
Abstract:A fast response aerodynamic balance will be developed for force and moment measurements under non-steady-state flight conditions. A cylindrical balance 2 inches in diameter and 6 inches long that uses a set of X-flexures will be considered as a candidate design. To satisfy the requirement for… more
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