Optically Transparent Patch Antennas

Optically transparent patch antennas have been invented for use in communication systems at frequencies of the order of a few gigahertz. These antennas can be mounted on windows of buildings and vehicles,...

Axial Force as Indication of Alignment of Threaded Fasteners

A developmental technique for automated alignment of threaded fasteners involves the use of the axial force between the fasteners as an indication of alignment. The technique was...

Organic/Inorganic Coats for Packaging of Microelectronics

A method for protective packaging of multichip modules and related assemblies of microelectronic circuitry involves coating the assemblies with composite organic/inorganic layers...

Boundary-Layer Rake of Pitot Tubes for Flight Testing

A boundary-layer rake of pitot tubes has been designed and built for installation on a flight-test fixture (FTF) on the NASA Dryden F-15B, which is a two-seat version of the F-15...

Software for Setting Up Equipment for Testing Rocket Engines

A computer program has been developed to shorten the time needed to set up electronic instrumentation for a hot-fire test of a rocket engine. The instrumentation in question is a...

Array Detector for Charge-Detection Mass Spectrometer

The pixelated array detector (PAD) is a planar array of complementary metal oxide/semiconductor (CMOS) charge-collecting electrodes and readout circuitry for measuring the electric...

Forward-Scattering Particle-Image Velocimetry

Forward-scattering particle-image velocimetry (FSPIV) is a technique for measuring velocities in microscopic flow fields as thin liquid films. As in other particle-image-velocimetry (PIV)...

High-Power-Density DC-to-DC Power-Converter Modules

Dc-to-dc power-converter modules that operate with input potentials from 60 to 140 V and generate various output potentials up to 15 V are undergoing development. Designed specifically for...

Imaging System With TDI and a Two-Axis-Scanning Mirror

A telescopic imaging system that includes an optomechanical scanning subsystem is undergoing development. The system is designed for use in scientific observation of the Earth from...

M-JPEG Video Compression System for Space-Based Applications

An M-JPEG video compression system has been modified to satisfy the unique requirements of space-based applications. ["M-JPEG" signifies the still-image-data-compression method of...

NSUTCQ: an Alternative Image-Compression Algorithm

No-shift universal trellis-coded quantization (NSUTCQ) is an image-data-compression/decompression algorithm designed to be especially useful in telemedicine. Like some other...

Low-Absorption Color Filters for Flat-Panel Display Devices

A proposed technique for color filtering in a liquid-crystal or other flat-panel display device would make it possible to brighten the display without increasing the amount of...

Heat-Driven Pulse Pump

The heat-driven pulse pump has been invented in an effort to satisfy a need for pumps that can circulate heat-transfer fluids at low flow rates with high reliability over long operational lifetimes. The heat-driven...

Improved Magnetostrictive Pump

An improved magnetostrictively actuated pump has been developed to satisfy a need for a small, low-pressure, high-flow-rate fluid pump that contains few moving parts and can run reliably for long periods...

Sputter Deposition of Catalysts for Fuel-Cell Electrodes

An improved method of fabricating electrodes for fuel cells includes the use of sputtering to deposit thin layers of catalytic electrode metals. Previously, catalytic electrode metals...

Alternative One-Time-Opening Miniature Isolation Valve

The figure depicts a proposed miniature, electrically actuated, one-time-opening isolation valve that would be made mostly of silicon, by use of micromachining techniques. Isolation...

Improved Thermoelectric Converter Units and Power Generators

Improved thermoelectric converter units (TCUs) and radioisotope thermoelectric generators (RTGs) that contain them have been undergoing development for use as small, lightweight...