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THE OBJECTIVE IS TO DEVELOP A TOOL FOR DESIGNING VORTEX FLAPS ON ADVANCED FIGHTER AIRCRAFT INCLUDING THE EFFECTS OF VISCOSITY. ANALYTICAL METHODS, INC. PROPOSES TO USE AN UNSTEADY TIME-STEPPING VERSION OF ITS SURFACE SINGULARITY PANEL METHOD, VSAERO, AS A BASIS FOR THIS WORK. THIS WILL GENERATE THE PRELIMINARY VORTEX STRUCTURE (LEADING-EDGE VORTICE, FOREBODY VORTICES, ETC.) FOR THE COMPLETE CONFIG ...

THE FLOW FIELD ABOUT POWERED LIFT VEHICLES CAN BECOME VERY COMPLEX DUE TO HIGH ANGLES OF ATTACK AND LIFTING JETS. IN ADDITION TO MODELING PROPULSION/AIRFRAME INTERACTIONS, THEREFORE, FLOW PREDICTION METHODS MUST TREAT THE PROBLEMS OF SEPARATION AND THE TRANSIENT EFFECTS OF PASSING VORTICAL STRUCTURES INTERACTING WITH THE AIRFRAME. ANALYTICAL METHODS, INC. (AMI) PROPOSES TO EXTEND ITS POWERED LIFT ...

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WOOD WAFERBOARD COULD BE UTILIZED FOR SIDING AND OTHER EXTERIOR EXPOSURE APPLICATION IF IT WERE MORE DIMENSIONALLY STABLE WHEN EXPOSED TO CYCLIC HUMIDITY CONDITIONS OR ENVIRONMENTS WHERE THE PRODUCT ABSORBS MOISTURE. ASPEN WAFERBOARD MARKETS COULD BE EXPANDED IF THE THICKNESS SWELLING AND LINEAR EXPANSION UNDER WET CONDITIONS WERE EQUAL TO OR LESS THAN PLYWOOD. A FEASIBILITY STUDY WILL DETERMINE T ...

THE USE OF COMPUTER CODES THAT SIMULATE FLUID FLOWS IS BECOMING INCREASINGLY IMPORTANT IN THE DESIGN OF AIRCRAFT COMPONENTS. THE CURRENT STATE OF THE TECHNOLOGY OF NUMERICAL SIMULATION OF VISCOUS FLUID FLOWS IS SUFFICIENT FOR DEVELOPING ENGINEERING TOOLS FOR FLOW ANALYSIS OF VARIOUS TYPES OF COMPLEX THREE-DIMENSIONAL FLUID FLOWS. OF PARTICULAR INTEREST ARE FLOWS WITH AERODYNAMIC BODIES PERIODICALL ...

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MOST LASER SCANNING SYSTEMS ARE MECHANICAL, UTILIZING A MOTOR TO ROTATE A PRISM, MIRROR, OR HOLOGRAPHIC GRATING. SUCH MECHANICAL SYSTEMS ARE OR RELATIVELY LARGE SIZE AND MASS. THERE IS A NEED FOR A SOLID STATE SCANNING DEVICE WHICH WOULD OFFER BENEFITS OF REDUCED SIZE AND MASS, NO MOVING PARTS, IMPROVED RELIABILITY, LOW COSTS, AND LOW POWERREQUIREMENT. WE PROPOSE TO DEVELOP AN INTEGRATED OPTICS (I ...

THE OBJECTIVE OF THE PROPOSED EFFORT IS TO REDUCE THE SIZE, WEIGHT, AND COST OF THE RELAY OPTICS OF THE AIRCRAFT HEAD UP DISPLAY (HUD), BY REPLACING IT WITH TRANSMISSION HOLOGRAPHIC LENSES. HOLOGRAPHIC LENSES ARE VERY LIGHT AND CAN BE MANUFACTURED AT VERY LOW COSTS. APPLICATIONS OF HOLOGRAPHIC LENSES TO HUD WERE LIMITED IN THE PAST, DUE TO WIDE SPECTRAL BAND OF THE HUD - CATHODE RAY TUBE (CRT). HO ...

A SPECTRALLY AGILE BASED UPON A TUNABLE FILTER CAN EFFECTIVELY MEASURE INFRARED BACKGROUND, TARGETS, AND OBSCURANT CLOUDS. AN INTEGRATED OPTICS INTEGRATED FILTER (IOTF) PLACED IN FRONT OF THE SENSOR FOCAL PLANE OR INTEGRATED WITH THE FOCAL PLANE DETECTORS CAN BE USED TO SELECT WAVEBAND LOCATION AND BANDWIDTH IN THE INFRARED. A SPECIFIC CONCEPT FOR THE FILTER IS PROPOSED BASED UPON A MACHZEHNDER IM ...

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