Award Data

LOW SPEED, TWO PHASE (VAPOR-LIQUID) FLOW REGIMES ARE IMPORTANT TO SEVERAL SIGNIFICANT HEAT TRANSFER PROBLEMS IN SPACECRAFT. LOW SPEED FLOW RATES ALSO CREATE THE MOST GRAVITY-AFFECTED FLOW REGIMES. HIGH SPEED FLOW RATES CREATE FLOW REGIMES THAT ARE AFFECTED LITTLE BY GRAVITY. FEW STUDIES EXIST WHICH GIVE AN OVERVIEW OF FLOW REGIMES IN ZERO GRAVITY. IN PARTICULAR, FEW STUDIES HAVE ATTEMPTED TO USE R ...

IN THE PROPOSED RESEARCH THE FEASABILITY WILL BE ESTABLISHEDFOR DEVELOPING A LOW-COST EXPENDABLE TRANSDUCER MOUNTED IN ANATIONAL WEATHER SERVICE TYPE RADIOSONDE TO MEASURE VERTICALPROFILES OF SUPERCOOLED LIQUID WATER. THE TRANSDUCER IS BASED UPON A WIRE WHOSE NATURAL VIBRATION FREQUENCY VARIES ACCORDING TO THE AMOUNT OF ICE COLLECTED ON THE WIRE. THE RESEARCH WILL EXAMINE THE EFFECTS ON THE THE RE ...

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THE GOAL OF THIS PROJECT IS TO DETERMINE THE FEASIBILITY OF DEVELOPING A GENERAL PURPOSE TACTILE SENSOR CAPABLE OF IDENTIFYING THE TEXTURE, COMPLIANCE, AND SURFACE FEATURES OF AN OBJECT. THE TACTILE SENSOR WILL CONSIST OF A PIEZOELECTRIC POLYMER MATERIAL WHICH GENERATES AN ELECTRICAL SIGNAL IN RESPONSE TO AN APPLIED FORCE. THE SENSOR WILL BE DESIGNED TO MOVE ACROSS THE OBJECT BEING EXAMINED, AND T ...

FERRIMAGNETIC OXIDES WITH HEXAGONAL CRYSTAL STRUCTURE ARE CHARACTERIZED PRIMARILY BY THEIR FOLIATE (LEAF-LIKE OR PLATELET) STRUCTURE AND HIGH ANISOTROPY FIELDS. THESE HIGHLY ANISOTROPIC COMPOUNDS CAN BE PREPARED AS A COMPOSITE COMPOSED OF SINGLE DOMAIN GRAINS POSSESS ING A SPECTRUM OF CONTROLLED VALUES OF ANISOTROPY FIELDS AND ATTENDANT PREFERRED DIRECTION OF MAGNETIZATION. THESE HEXAGOAL SINGLE D ...

THE RESEARCH IS FOCUSED ON EVALUATING THE FEASIBILITY OF USING A NOVEL ELECTROFORMING PROCESS TO PRODUCE LOW LOSS FERRITE COMPONENTS FOR APPLICATION IN THE EHF REGION. THE PROPOSED PROCESS HAS POTENTIAL FOR REDUCING CONDUCTION LOSS AND IMPROVING DIMENSIONAL CONTROL. ADDITIONAL BENEFITS REGARDING CONFIGURATION AND RELIABILITY ARE ANTICIPATED.

THE TASK GOAL IS TO IDENTIFY A COMPLETE SET OF OPERATING SYSTEM PRIMITIVE (OR LOW-LEVEL OPERATING SYSTEM FUNCTIONS) WHICH ARE SUFFICIENT TO SUPPORT REAL-TIME MULTI-TASKING APPLICATIONS, WHICH ARE COMPATIBLE WITH ADA PROGRAMMING ENVIRONMENTS, AND WHICH ARE AMENABLE TO EFFICIENT IMPLEMENTATIONS IN MICROCODE OR HARDWARE. TECHNIQUES TO EVALUATE THE FEASIBILITY OF SUCH IMPLEMENTATIONS IN VARIOUS ENVIRO ...

A CATHODE WILL BE DEVELOPED WHICH MINIMIZES THE HEATING POWER REQUIRED PER AMPERE OF ELECTRON GUN BEAM CURRENT, IS OF STUDY CONSTRUCTION TO WITHSTAND ROCKET FLIGHT, DOES NOT DETERIORATE DURING EXPOSURE TO ATMOSPHERIC GASSES WHILE COLD AND PRODUCES AT LEAST TENS OF AMPERES CURRENT. AN ELECTRON GUN WILL BE DESIGNED WHICH WILL BE CAPABLE OF TENS OF AMPERES BEAM CURRENT AT ENERGIES UP TO TENS OF KILOV ...

A FLIGHT MODULE WILL BE DESIGNED AND CONSTRUCTED THAT WILL LEAD TO THE CONSTUCTION OF AN ELECTRON GUN SUITABLE FOR ROCKET, SPACE SHUTTLE, AND SATELLITE FLIGHT. AN ELECTRON GUN MODULE WITH A WIDE DYNAMIC RANGE IN CURRENT. ENERGY, ANDDENSITY WILL BE CONDTRUCTED, CAPABLE OF AT LEAST 100 MILLI- AMPERES AND ABOVE 10 KILOVOLTS BEAM ENERGY. A CATHODE WILL BE DESIGNED TO MEET THE ABOVE SPECIFICATIONS AND ...

THE RESEARCH PROPOSED INVESTIGATES THE FEASIBILITY OF SMALL MILLIMETER WAVE RADIOS WITH SERVO DRIVEN ANTENNAS FOR EMERGENCY LINE-OF-SIGHT COMMUNICATIONS FOR BOTH GROUND-TO-GROUND AND GROUNDTO-AIR USE. THE CONSIDERATIONS IMPACTING DESIRABILITY OF THE CONCEPT INCLUDE THE SEARCH MODE METHOD, DATA CAPACITY, MODULATION METHODOLOGY, OPERATING FREQUENCY, COST, SIZE AND WEIGHT. TRANSMISSION RANGE IS TO BE ...