Award Data

NUMEROUS STUDIES CONDUCTED IN THE PAST HAVE CLEARLY ESTABLISHED THE STRONG CORRELATION BETWEEN THE MICROSTRUCTURE AND THE ENERGETIC PROPERTIES OF SOLID PROPELLANTS SUCH AS RDX,HMX, AL, NH(4)CL0(4), ETC. THE PRESENT STUDY WILL EXAMINE THE FEASIBILITY OF USING A NONCONTACT, NON-DESTRUCTIVE X-RAY TECHNIQUE DEVELOPED UNDER CURRENT ONR SPONSORSHIP FOR SUCCESSFULLY CHARACTERIZATING SOLID PROPELLANT COMP ...

THE TECHNOLOGY TO ALLOW REPLACEMENT OF PERSONNEL BY MOBILE ROBOTS IN HIGH RISK SITUATIONS EXISTS TODAY. THE NEAR TERM APPROACH, NOT REQUIRING EXTENSIVE DEVELOPMENT OF ARTIFICIAL INTELLIGENCE REQUIRES USE OF A BROAD BANDWIDTH SECURE, ANTI JAM COMMUNICATIONS LINK TO ALLOW MAN-IN-THE-LOOP OPERATION. THIS PROGRAM PROPOSES TO STUDY THE MAKE-UP OF SUCH LINKS FOR SHORT, INTERMEDIATE AND LONG RANGE ROBOTI ...

NAVY TECHNICAL REQUIREMENTS FOR INSENSITIVE MUNITIONS, NAVSEAINST 8020.5, STATES THAT "BURNING" IS THE ONLY ACCEPTABLE REACTION TO THE MIL-STD-2105 SLOW COOK-OFF TEST. TYPICAL REACTIONS IN THIS TEST ARE DETONATIONS OR PARTIAL DETONATIONS. ENERGETIC MATERIALS EXPOSED TO ELEVATED TEMPERATURES, UNDERGO A SLOW CHEMICAL REACTION, FINALLY REACHING A POINT OF AUTOCATALYTIC DECOMPOSITION, RESULTING IN VER ...

REAL-TIME X-RAY IMAGING USED FOR DIAGNOSTIC STUDIES AND N NONDE-FEASIBILITY FOR THE INSPECTION OF SPOT WELDS IN STAIN LESS STEEL. THE INFRARED RESULTS WILL BE COMPARED TO DATA FOR DESTRUCTIVE TESTS OF SEVERAL SPOT WELDS THEREBY OFFERING INCREASED CONFIDENCE IN THE INPECTION RESULTS. PRELIMINARY WORK ON SPOT WELDS HAS CLEARLY SHOWN THE POTENT IAL OF THIS TECHNIQUE FOR INSPECTION AND THE SORTING OF ...

ANALYTICAL METHODOLOGY AND NUMERICAL CODE WILL BE DEVELOPED FOR THE COMPUTATION OF EFFECTIVE PARAMETER REPRESENTATIONS FOR COMPOSITE MATERIAL. WE SHALL TREAT FILIMENTARY METAL MATRIX COMPOSITE MATERIALS USING THE METHOD OF HOMOGENIZATION DEVELOPED OVER THE PAST TEN YEARS. THIS ANALYTICAL METHOD LEADS TO CONSTANT COEFFICIENT MODELS FOR THE MACROSCOPIC BEHAVIOR OF THE COMPOSITE STRUCTURE. BY ADAPTIN ...

THE PROPOSED PROJECT WILL DEVELOP MATERIALS AND SUPPORTING THERMAL TECHNOLOGY LEADING TO DESIGN OF HIGH POWER PULSE CONDUCTORS FOR SPACE APPLICATIONS. IN PHSE I WE WILL EVALUATE AN EM GUN SYSTEM, IDENTIFY ALTERNATIVE MATERIALS AND THERMAL APPROACHES FOR SELECTED COMPONENTS, AND IDENTIFY TECHNOLOGY REQUIREMENTS. COMPONENT DEVELOPMENT FEASIBILITY AND BENEFITS WILL BE DEFINED.

THE OBJECTIVE OF THE PROPOSED RESEARCH IS TO PRODUCE A LIFE CYCLE COST MODEL SPECIFICALLY FOR SYSTEMS DESIGNED AND DEVELOPED IN ADA. THIS MODEL WILL SIGNIFICANTLY DIFFER FROM TODAY'S COST MODELS IN A NUMBER OF IMPORTANT AREAS. A SIZING FRONT END WILL BE PROVIDED TO TAKE INPUT FROM THE CHARACTERISTICS OF FUNCTIONAL SPECIFICATIONS, RATHER THAN REQUIRING THE TYPICAL LINES OF CODE ESTIMATES. THE MODEL ...

THE NEED FOR INCREASING THE SENSITIVITY OF SPACE-BORNE SENSORS WILL REQUIRE DEVELOPMENT OF LONG-LIFE, HIGHLY EFFICIENT HELIUM LIQUIFIERS. CONVENTIONAL HELIUM LIQUIFIERS EMPLOY A JOULE-THOMSON EXPANSION VALVE TO EXPAND THE HELIUM AT TEMPERATURES BELOW ABOUT 10 DEG K. IT HAS BEEN SHOWN THAT GAINS OF UP TO 30% IN OVERALL CYCLE EFFICIENCY CAN BE OBTAINED IF THE JOULE-THOMSON VALVE IS REPLACED BY AN EX ...

WE PROPOSE TO DEVELOP A MATHEMATICAL MODEL AND ASSOCIATED NUMERICAL CODE WHICH WILL PERMIT DETERMINATION OF THE IMAGING PROPERTIES OF A PHASED-ARRAY TELESCOPE IN THE PRESENCE OF PARTIALLY-COHERENT LIGHT. THIS FORMULATION WILL INCLUDE COHERENCE EFFECTS INTRODUCED BY LONG PROPAGATION PATHS AND THE EFFECT OF COHERENCE LOSS THAT OCCURS AS A RESULT OF ATMOSPHERIC TURBULENCE. SIMPLIFIED EXPRESSIONS FOR ...

THE DEVELOPMENT OF AN INDEPENDENT, OBJECTIVE MODEL FOR ASSESSING THE PROGRAM COSTS OF SPACE LAUNCH SYSTEMS IS PROPOSED. PARAMETRIC COST MODELS WILL BE DEVELOPED FOR BOTH EXPENDABLE LAUNCH VEHICLES AND REUSABLE VEHICLES (I.E. THE SHUTTLE). A DETAILED COST DATA BASE FOR LAUNCH VEHICLES WILL BE GENERATED; AND WILL INCLUDE NOT ONLY RAW COST DATA BUT INFORMATION ON NON-TECHNOLOGICAL FACTORS AFFECTING T ...