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The Phase I technical objective is to design a series of small receiving antennas which operate in the HF, VHF, and UHF frequency ranges (approximately 1 MHz to 1500 MHz) and then to build and test prototypes of the designs. The antennas are physically small in size and man-packable. Conventional antenna design approaches have constraints which can result in physically large structures, especially ...

Currently an effective diver mine imaging sensor for use in VSW mine reconnaissance does not exist. The SBIR topic requests a capability to locate and image mine targets within a 45 deg wide x 10 deg high field-of-view and to image targets with a resolution of at least 3" at a range of 20 yards. An acoustic lens sonar is a preferred technical approach. Both an acoustic lens sonar and a more compac ...

Suppression of the Infra-red (IR) signature of Special Operations Command (SOCOM) aircraft is a prerequisite for increasing survivability of the aircraft in the threat environment in which these aircraft must function. the primary goal of this program is to minimize the IR signature associated with the engine exhaust of the SOCOM C-130 and to demonstrate the potential of usage ofthe same technolo ...

Modern manpack or hand held RF communication systems mandate an ultra compact and lightweight transceiver design complemented with a physically small antenna system with extraordinary RF bandwidth, high gain capability and omnidirectional radiation patterns. Also, it is desirable to be able to electronically tune the antenna to a specific operating frequency or band. Furthermore, special communica ...

ALTHOUGH THE ASP (ACCIDENT SEQUENCE PRECURSOR) METHODOLOGY FOR ANALYZING OPERATIONAL DATA AND EVENTS FOR PRECURSORS TO SEVERE ACCIDENTS HAS BEEN IN EXISTENCE FOR ABOUT A DECADE, IT DOES NOT NOW INCORPORATE THE ANALYSIS OF PRECURSORS TO EARTHQUAKE-INITIATED AND INTERNAL-FIRE-INITIATED ACCIDENT SEQUENCES. THIS PROJECT'S OBJECTIVE IS TO FILL THIS GAP BY DEVELOPING SUCH A METHODOLOGY. THE OBJECTIVE OF ...

THE OBJECTIVE OF THIS PROJECT IS TO DEVELOP A MEASUREMENT-BASED METHODOLOGY AND A TOOL SET TO IMPLEMENT THE METHODOLOGY FOR PROBABILISTIC ANALYSIS OF OPERATIONAL DATA FROM NUCLEAR FACILITIES TO PROVIDE SYSTEMATIC AND OBJECTIVE EVALUATIONS OF RELIABILITY AND AVAILABILITY. THE RESULTS WILL BE A PARTICULAR USE FOR DEDICATION OF COMMERCIAL GRADE DIGITAL INSTRUMENTATION AND CONTROL (I&C) SYSTEMS IN NUC ...

WE PROPOSE TO EXPLOIT THE PROPERTIES OF OUR NEW, FAST, BRIGHT SCINTILLATOR, YAIO3:CE(+3) (YAP), TO CONSTRUCT A DETECTOR FOR PHOTONS WITH ENERGIES FROM 20 KEV TO 3 MEV. AN ARRAY OF THESE INDIVIDUAL DETECTORS WILL SERVE AS THE BASIS FOR A BROAD-BAND Y-RAY DOSIMETER CAPABLE OF MEASURING EXPOSURES FROM 5 MR/H TO 1 R/H AND EQUIVALENT DOSES FROM 5 X 10(-2) TO 10 (+4) MSV/H. THEA ADVANTAGES OF YAP SCINTI ...

THE DIFFICULTY IN PREDICTING STRUCTURAL DEGRADATION RATES FOR NUCLEAR POWER PLANT COMPONENTS DUE TO CORROSION AND OTHER FACTORS HAS LED TO THE NEED FOR COSTLY, TIME CONSUMING INSPECTIONS AND INCREASED COST FROM INTENTIONALLY OVERDESIGNED COMPONENTS. THE SITUATION INDICATES A SERIOUS, UNMET NEED FOR A SIMPLE BUT ACCURATE SYSTEM FOR REAL- TIME, IN SITU, NONDESTRUCTIVE ANALYSIS OF NUCLEAR POWER PLANT ...

TECHNIQUES HAVE RECENTLY BEEN DEVELOPED FOR PROBABILISTIC ANALYSIS OF THE RISK FROM EARTHQUAKE-INITIATED ACCIDENTS AT NUCLEAR POWER REACTORS. THESE TECHNIQUES ARE NOW BEGINNING TO BE APPLIED AS PARTS OF LARGER PRA STUDIES. HOWEVER, THE RESULTS OF APPLYING THESE SEISMIC PRA TECHNIQUES ARE STILL HIGHLY UNCERTAIN, AND THE INSIGHTS GAINED SO FAR FOR SPECIFIC REACTORS ARE DIFFICULT TO GENERALIZE. THIS ...