Award Data

AN ADAPTIVE ARRAY SIGNAL PROCESSOR CAPABLE OF ADAPTIVELY NULLING MULTIPE SIDELOBE JAMMERS AND SIDELOBE DISTRIBUTED AND DISCRETE GROUND CLUTTER RETURNES COMPETING WITH THE TARGET RETURN, IN AI-LOW OBSERVABLE TARGET DETECTING MEDIUM-PRF RADARS IS THE SUBJECT OF A DESIGN STUDY. THE ASI-DEVELOPED AIRBORNE RADAR ADAPTIVE ARRAY SIMULATION TEST BED (IMPLEMENTED IN A PC-286 COMPUTER) IS PROPOSED TO BE USE ...

MONOSTATIC RADAR SYSTEMS USING SPACE-TIME ADAPTIVE PROCESING (STAP) HAVE BEEN SIMULATED IN DETAIL AND SHOWN TO PROVIDE LARGE IMPROVEMENTS IN MOVING TARGET DETECTION. AND TRACKING CAPABILITY. THE PROPOSED STUDY WILL APPLY STAP TECHNOLOGY TO BISTATIC RADARS WITH AIRBORNE RECEIVERS AND AIRBORNE OR STATIONARY TRANSMITTERS. CANCELLATION OF CLUTTER IN A BISTATIC RADAR IS COMPLICATED BY THE RAPIDLY VARYI ...

This proposal describes a novel, high thrust density Detonation Wave Engine (DWE) applicable to the Mach range of 0 to 3. The geometry of this novel engine concept naturally provides for integration into a new Combined Cycle Engine with Ramjets. The concept is an intermittent combustion jet engine that harnesses travelling detonation waves to accomplish compression and chemical reaction. The goal ...

An innovative actively cooled structure concept is proposed which integrates proven cooling techniques and state-of-the-art fabrication methods to extend the maximum combustor wall temperature, thereby reducing cooling requirements and aircraft weight while improving engine performance. Specifically, CONvective and TRANspiration cooling (CONTRAN) are uniquely combined, relying on hydrogen coolant ...

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THE PRESENT WORK DEALS WITH THE DESIGN, DEVELOPMENT, TESTING AND IMPLE MENTATION OF A REAL-TIME MONITORING SYSTEM TO DETERMINE THE PARTICLE S IZE DISTRIBUTION OF SOOT. THE NOVEL TECHNIQUE SHALL MAKE USE OF MULTI WAVELENGTH ANALYSIS OF THE LIGHT SCATTERING PROPERTIES OF THE PARTICLE S TO INFER THE PARTICLE INDEX OF REFRACTION, THE SOOT NUMBER DENSITY A ND THE PARTICLE SIZE DISTRIBUTION. THE PHASE I ...

There is a need for non-intrusive instrumentation to characterize the drop size distribution and volume flux in support of on-line engine/inlet icing tests. The ducts may vary from three to twelve feet in diameter with flow field speeds from Mach 0.2 to 0.5. The Phase Doppler technique offers the best potential for making these measurements non-intrusively and with sufficient accuracy to meet the ...

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AEROBALLISTIC RANGES PROVIDE INVALUABLE DATA FOR DESIGNING AIR DELIVERABLE MUNITIONS AND ARMAMENT. PRESENT METHODS FOR OBTAINING AERODYNAMIC COEFFICIENTS FOR THESE MUNITIONS ARE CUMBERSOME AND TIME CONSUMING. DATA REDUCTION INVOLVES A LONG SEQUENCE OF INDIVIDUAL STEPS WHICH CAN TAKE FROM SEVERAL DAYS TO WEEKS. BECAUSE OF THE SLOW TURN AROUND TIME, ERRORS ARE NOT CORRECTED DURING THE TEST. THE INEX ...

THREE AREAS OF ACTIVE MISSILE WING RESEARCH WILL BE PURSUED. THE FIRST SECTION WILL EVALUATE THE MATERIALS TO BE USED IN THE INFLATABLE WING SPARS, RIBS, SKINS, PRESSURE BLADDERS AND ACTIVE ELEMENTS. SPECIMENS OF HIGH ORTHOGONALITY COMPOSITES (POLYURETHANE-GRAPHITE) WILL BE CONSTRUCTED ALONG WITH SAMPLE ISOTROPIC BLADDER MATERIALS (MYLAR OR TEFLON) SO THAT THEIR FUNDAMENTAL PROPERTIES CAN BE EVALU ...