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AN ANALYTIC MODEL OF A WIDE FIELD, PHASED ARRAY IMAGING SYSTEM WILL BE DEVELOPED. THE MODEL IS BASED ON A MEASUREMENT SYSTEM CAPABLE OF ERROR MEASUREMENT DIRECTLY WITH RESPECT TO THE FINAL IMAGE PLANE. THE BEAMS FROM INDIVIDUAL SUBAPERTURES WILL BE COMPACTED AND CONFORMALLY MAPPED TO A DEMAGNIFIED PUPIL. WE WILL DEVELOP NONREDUNDANT, CODED APERTURE MASKS TO BE INSERTED AT THIS COMPACT PUPIL WHICH ...

AN INTELLIGENT TUTORING SYSTEM (ITS) WILL BE DEVELOPED AND INCORPORATED INTO A PROTOTYPE PC-BASED DESKTOP TRAINER FOR COMBAT FORWARD OBSERVERS AND FORWARD AIR CONTROLLERS. THIS TRAINER WILL USE DIGITAL VIDEO INTERACTIVE (DVI) TECHNOLOGY TO PRESENT THE TRAINEE WITH A SERIES OF HIGHLY REALISTIC INTERACTIVE SIMULATIONS OF THE FORWARD OBSERVER/CONTROLLER'S COMBAT ENVIRONMENT. THIS TRAINER MAKES EXTENS ...

CURRENT DEFENSE CENTRIFUGES FOR HUMAN EXPERIMENTATION ARE MORE THAN 25 YEARS OLD, ARE LIMITED IN THE PROFILES WHICH THEY REPRODUCE, AND INTRODUCE SIGNIFICANT SIMULATION ARTIFACT. A RANGE OF SIGNIFICANT PROFILES EXISTS WHICH CANNOT BE ADEQUATELY SIMULATED WITH CURRENT CENTRIFUGES, IMPACT FACILITIES, OR SPATIAL DISORIENTATION TRAINERS. THE PROPOSED EFFORT WILL EXPLORE THE POTENTIAL PROFILES WHICH CO ...

ACCURATE AND EFFICIENT PREDICTION OF SKIN FICTION AND HEATING RATES FOR SUPERAND HYPERSONIC VEHICLES HAS LONG BEEN A GOAL OF COMPUTATIONAL FLUID DYNAMICS (CFD). THE USE OF STANDARD CFD METHODS TO RESOLVE THE NEAR-WALL BOUNDARY LAYER (WHICH IS ESSENTIAL FOR GOOD PRECITIONS OF AIRFOIL BEHAVIOR) USING A LARGE NUMBER OF GRID POINTS IS SELDOM FEASIBLE, OFTEN INACCURATE, AND IF DONE, ALWAYS REQUIRES EXC ...

FAST AND EFFICIENT ERROR DETECTION IS THE CORNERSTONE IN DEVELOPING A FAULT TOLERANT SYSTEM. UNDER CURRENT PROGRAM, GALAXY HAS DEVELOPED AN ERROR TOLERANT CPU ARCHITECTURE THAT WILL REAL TIME DETECT AND CORRECT SOFT ERRORS IN THE REGISTERS. EXPANSION OF THIS WORK WILL LEAD TO INTEGRITY CHECKING OF THE REMAINING PROCESSOR FUNCTIONS I.E. ALU, I/O, CONTROL, ETC. NECESSARY FOR ONBOARD MESSAGE PROCESSI ...

LEADLESS CHIP CARRIER PACKAGING IS CURRENTLY IN USE IN SEVERAL LRUS ON THE F15E. EACH SUPPLIER CONFIGURES HIS OWN DEPOT SUPPORT FACILITY WITH PARTICULAR EMPHASIS ON THEIR OWN ASSEMBLIES. THIS RESULTS IN A PROLIFERATION OF DEPOT SUPPORT EQUIPMENT AND AN EXCESSIVE NEED FOR PERSONNEL TRAINING. THE PURPOSE OF THIS PROGRAM IS TO ASCERTAIN AN OVERALL DEPOT SUPPORT FUNCTION FOR LEADLESS CHIP CARRIER IMPL ...

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MOTOR OPERATED GATE VALVE OPERABILITY PROBLEMS AND FAILURES AT NUCLEAR POWER PLANTS ARE A MAJOR SAFETY CONCERN AS STATEDIN NRC IE BULLETIN 85-03 AND GENERIC LETTER 89-10. THIS PROPOSAL IS AIMED AT IMPROVING GATE VALVE PERFORMANCE BY (1) DEVELOPING COMPREHENSIVE PERFORMANCE PREDICTION MODELS FOR USE OVER A RANGE OF OPERATING CONDITIONS, (2) DEFINING LIMITS, BASED ON SPECIFIC DESIGNS, BEYOND WHICH E ...

IN LARGE, LONG LIFE, COMPLEX PRODUCTS SUCH AS MODERN WEAPONS SYSTEMS THE ORIGINAL DESIGN TEAM IS LONG SINCE GONE WHEN THE PRODUCT EXHIBITS THE DESIGN PROBLEMS. THE ONLY WAY TO PROVIDE THE NEW DESIGN TEAM WITH VISIBILITY INTO THE CORRELATION BETWEEN THE DESIGN DECISIONS AND THEIR IMPLICATIONS IS TO PROVIDE A MEANS OF CAPTURE OF THE DESIGN RATIONALE AND THE CORRELATE THIS RATIONAL TO THE EFFECTS. TH ...