Award Data

Efforts to apply active noise and vibration control commercially, while intensifying, continue to be hampered by the cost of the computers required to implement the active algorithms. Currently, the cost of wide-band control is prohibitive for lightly damped systems such as precision structures or highly reverberant acoustic spaces, even if the system has just one canceling actuator and one error ...

THE HANDING AND STORAGE OF AIRCRAFT FUELS, ROCKET PROPELLANTS AND SOLVENTS AT AIR FORCE INSTALLATIONS CREATES THE POTENTIAL FOR ACCIDENTIAL RELEASE OF AIRBORNE POLLUTANTS. CURRENTLY AVAILABLE DISPERSION MODELS FOR PLANNING AND RESPONSE ACTIONS DO NOT EFFECTIVELYADDRESS BUILDING EFFECTS. THE OBJECTIVES OF THIS STUDY, THEREFORE, ARE TWOFOLD: (1) TO ASSESS FOR A RANGE OF RELEASE SCENARIOS THE SIGNIFI ...

A small, battery-operated data recorder/analyzer utilizing internal sensors is needed to collect data to improve the design of the ejection seat and restraint mechanisms to reduce injuries and deaths during ejections. SPEC proposes to leverage our existing recorder, multiplexing and telemetry experience to develop a completely autonomous, high G, miniature Ejection Data Acquisition and Recorder M ...

The application of electric fields in the presence of flame fronts has demonstrated a definite effect upon the progression of the flame front. The application of electrogasdynamic (EGD) technology toward influencing combustion processes shall be examined in addition to electromagnetic fields. No environmentally detrimental compounds ar utilized or released with this process.

The proposed research combines an innovative eigenvector method with other electromagnetic techniques to produce a hybrid approach towards solving the EM coupling to satellite cavity problem. The physical structure is divided into an exterior region and one or more interior regions. The exterior region is modeled with method of moments (MOM) and or hybrids of MOM with the uniform theory of diffr ...

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MRC PROPOSES TO DEVELOP A SAFETY PERFORMANCE INDICATOR (PI) OF THE ELECTROMAGNETIC (EM) PROTECTION STATUS OF A NUCLEAR POWER PLANT (NPP). WE BELIEVE THAT SUCH A PI IS NEEDED BECAUSE: (1) EM ENVIRONMENTAL POLLUTION IS ON THE INCREASE,(2) ADDITIONAL EM THREATS MUST BE EVALUATED, AND (3) DISRUPTION OF NPP OPERATIONS BY EM EFFECTS CAN AND MUST BE AVOIDED. PREVIOUS STUDIES HAVE ADDRESSED THE ISSUE OF E ...

This is a proposal to investigate the environmental implications of the use of alloys of tungsten/tantalum with other metals (e.g. cobalt) in warhead/penetrator designs. The primary objectives are to (1) investigate and characterize the alloys of interest to the DOD so that potential environmental source terms can be defined and (2) identify the potential short-term and long-term environmental im ...

ALGORITHMS NEEDED TO SOLVE DATA FUSTION IN THE E-3 ENVIRONMENT ARE GROUPED INTO FIVE CATEGORIES FOR THIS RESEARCH. THE PROPOSAL DESCRIBES TECHNICAL APPROACHES IN DETAIL FOR EACH: (1) TRACKING; THE USE OF THE DUAL-VELOCITY INTEGRATED ORNSTEIN-UHLENBECK MOTION MODEL KAMAN FILTER; (2) CORRELATION, THE USE OF STATISTICAL SCORING AND A UNIQUE SEQUENTIAL SOLUTION TO AN INTEGER PROGRAMMING FORMULATION OF ...

Measuring temperature in specimens being heated by electromagnetic energy requires the use of special probes. The temperature probes must be specially designed to minimize electromagnetic field perturbations. Several types of non-perturbing temperature measurement probes have been investigated and developed. Many employ optical fibers rather than electrical conductors to avoid the e ...