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HIGH TEMPERATURE (2500 DEG F) AIRFRAMES ARE NEEDED FOR HYPERSONIC MISSILES. A CARBON/CARBON COMPOSITE MATERIAL IS ATTRACTIVE FOR THIS APPLICATION. JOINING TECHNIQUES ARE REQUIRED THAT CAN BE APPLIED TO AIRFRAME FABRICATION THAT WILL PERFORM AT HIGH TEMPERATURES. SINCE MOST JOINING WORK TO DATE HAS CENTERED ON LOWER TEMPERATURE JOINING METHODS AND MATERIALS, A RESEARCH EFFORT IS NEEDED TO IDENTIFY ...

THIS PROJECT IS DESIGNED TO PROVIDE A TOOL TO IMPROVE THE QUALITY OF CASTINGS PRIMARILY BY CONTROL OF MICROSHRINKAGE. IT WILL HAVE TWO OBJECTIVES; (A) IMPROVE THE QUALITY OF COMPONENTS CURRENTLY PRODUCED BY CASTING, AND (B) FACILITATE THE APPLICATION OF CASTING METHODS TO OTHER COMPONENTS THUS REDUCING COSTS. WE PROPOSE TO ACHIEVE THESE OBJECTIVES BY DEVELOPING A COMPUTER MODEL FOR THE CASTING PRO ...

THE MINIMUF ALGORITHM HAS BEEN USED VERY SUCCESSFULLY AS A PREDICTIVE TOOL FOR DETERMINING THE MUF OF AN HF CIRCUIT. THE ALGORITHM IS CURRENTLY IMPLEMENTED AS A BASIC PROGRAM. THE USEFULNESS OF THIS ALGORITHM WOULD BE GREATLY ENHANCED IF THE ALGORITHM COULD BE IMPLEMENTED SUCH THAT A TIME, FREQUENCY PAIR CALCULATION COULD BE COMPLETED IN 1 MS (GOAL). THIS PROPOSAL PRESENTS AN ANALYSIS AND PRELIMIN ...

THE DEVELOPMENT OF A CONTROLLED RELEASE SYSTEM TO DELIVER ANTIBIOTIC DRUGS TO THE PERIODONTAL POCKET IS PROPOSED. THIS SYSTEM COULD RESULT IN IMPROVED TREATMENT OF PERIODONTAL DISEASE. THE SYSTEM CONSISTS OF ANTIBIOTIC CONTAINING MICROPARTICLES, 100 IN DIAMETER, FORMULATED AS A SUSPENSION IN A CARRIER MEDIA. ONE FORMULATION, TO BE USED IN THE DENTAL OFFICE, WOULD BE FORMULATED IN A PASTE. THIS PAS ...

HYDRAZINE, MONOMETHYL HYDRAZINE, AND NITROGEN TETROXIDE ARE TOXIC COMPONENTS OF ROCKET FUELS, AND BETTER METHODS OF TREATING VAPORS RELEASED DURING TRANSFER OPERATIONS OR FROM ACCIDENTAL SPILLS ARE REQUIRED. THIS PROPOSAL DESCRIBES THETREATMENT OF THESE EMISSIONS THROUGH USE OF COMPOSITE COMBRANES EXTREMELY PERMEABLE TO THE PROPELLANT BUT RELATIVELY IMPERMEABLE TO AIR. MEMBRANES ARE ALREADY BEING ...

POLYURETHANES ARE USED IN A VARIETY OF BIOMEDICAL DEVICES, INCLUDING ARTIFICIAL HEARTS, VASCULAR GRAFTS AND CATHETERS, AND INTRA-AORTIC BALLOONS. THIS RESEARCH PRESENTS METHODS FOR SYNTHESIS, CHARACTERIZATION, AND FABRICATION OF POLY- URETHANEUREA (PUU) PRIMARY REFERENCE MATERIALS (PRM). THE PROGRAM INVOLVES THE SYNTHESIS OF A SINGLE LOT OF ADDITIVE- FREE POLYMER FOLLOWED BY THOROUGH CHARACTERIZAT ...

WE PROPOSE TO CONSTRUCT AN EXPERT SYSTEM WHICH CAN IDENTIFY ELECTRONIC AND ELECTRO-MECHANICAL MALFUNCTIONS IN SPACE. THE PROGRAMS, EXPERT ABOARD, WILL BE FULLY PORTABLE. IT WILL DRAW UPON A DATABASE OF GENERAL TROUBLESHOOTING TECHNIQUES, SPECIFIC DEVICE KNOWLEDGE, AND EXPERIENCE WITH THE SYSTEM UNDER TEST. IT WILL INTERACT WITH A MISSION SPECIALIST AT THE SATELLITE OR IN THE SPACE STATION TO AID I ...

DEVELOPMENT OF AN ADVANCED MONOLITHIC GAAS 8.5 VOLTAGE CONTROLLED OSCILLATOR WITH ON-CHIP GENERATION OF A LOW FREQUENCY REFERENCE OUTPUT, SUITABLE FOR PHASE LOCKED LOOP APPLICATIONS, IS PROPOSED. CIRCUIT ELEMENTS AND DESIGNS TECHNIQUES TRADITIONALLY RESERVED FOR MICROWAVE APPLICATIONSARE UTILIZED TO OBTAIN THE HIGH SPEED DIVIDE BY N CIRCUIT. A COHERENT REFERENCE SIGNAL IN THE 90-200 MHZ RANGE IS T ...

MISSION RESEARCH CORPORATION PROPOSES A SBIR PHASE I PROGRAM THAT WILL DETERMINE THE EFFECT OF RAPID THERMAL LOADING ON LAMINATED COMPOSITES IN THE PRESENCE OF DEBONDING OR DELAMINATIONS. EMPHASIS WILL BE GIVEN ON COUPLED THERMOELASTIC PROBLEMS SINCE RAPID THERMAL LOADING PRODUCES HIGH FREQUENCY THERMAL SHOCKS SO THAT THE TIME RATE OF VOLUMETRIC STRAIN IS, IN GENERAL, NOT SMALL COMPARED TO THE TIM ...

DNA HYBRIDIZATION PROBES ARE USEFUL FOR DETECTING SPECIFIC BACTERIA, VIRUSES AND GENETIC ABNORMALITIES. IN ORDER TO FULLY UTILIZE THE POTENTIAL OF SUCH PROBES, A RAPID, SENSITIVE, NONRADIOACTIVE DETECTION METHOD IS NEEDED. RADIOAUTOGRAPHY CAN VISUALIZE 15 PICOGRAMS OF TARGET DNA IN OVERNIGHT EXPOSURES. ENZYME CONJUGATES WITH A HIGH TURNOVER NUMBER CAN GIVE EQUIVALENT SENSITIVITY IN A FEW HOURS (RE ...