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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Plastic shoe aids inspection of thin walled stainless steel welded tubing to locate voids or other material defects in critical component equipment. Incorporated in available ultrasonic inspection equipment, it couples the transducer to the tube at desired incident angles.
DOT /Driver-Displacement Oriented Transducer/, applicable to both lap shear type application and honeycomb sandwich structures, measures the displacement of the honeycomb composite face sheet. It incorporates an electromagnetic driver and a displacement measuring system into a single unit to provide noncontact bond strength measurements.
Cycling, charge efficiency, and transducer studies with nickel-cadmium cell for spacecraft power supply systems
Static testing program on cryogenic fuel density measurement, mass flow meters, damped accelerometers, and digital transducer
Photographic recording and strain gauge transducer techniques for observing RAE satellite extendible antenna boom motions during damping tests
Computer welding skate for automatic gas tungsten- arc welding of contoured or double-contoured parts, providing control without touching work surface with transducers
Linear correlation-detection transducer arrays for directional noise field signals, giving N-element coherent detector performance in propagating and turbulent boundary layer
Equipment measures the roundness and concentricity of large, massive tanks. The equipment includes a 34-foot rotary table, a variable reluctance displacement transducer, an electronics console, a digital computer, and a 5-foot plotter used for final data display.
Small, programmable, high speed PCM subsystem, supports the variety of signals inherent in sophisticated equipment. A signal generated by a transducer is first conditioned to the proper signal range, then sampled by an external multiplexer or by the subsystem directly and then converted and transmitted to a receiving station.
Circuitry eliminates undesirable modulation effects in rotary transformers which transfer electrical energy to and from angular rate transducers on a gyroscope. It cancels the error by feeding back compensation signals through a tertiary winding on the stator of the output rotary transformer.
Respiration-rate transducers in the form of pneumotachometers measure respiration rates of pilots operating high performance research aircraft. In each low pressure or high pressure oxygen system a sensor is placed in series with the pilots oxygen supply line to detect gas flow accompanying respiration.
Miniature pressure transducers with diffused, heavily doped silicon strain-gage sensor elements, operates over a wide temperature range. Small thermal mass combined with close coupling between a metallic diaphragm and sensor elements minimizes sensitivity to temperature transients.
Five-stage, high-gain, push-pull fluidic amplifier provides increased range and improved linearity. The fluidic amplifier was designed to operate in conjunction with a fluidic transducer.
Growth and analysis of thin film piezoelectric transducers in study of electron phonon interactions in semiconductors
Applicability of calorimetric transducers in measuring nonstationary heat exchange in reflection of shock wave from solid wall
Pressure-time profile measurements on projectile hypervelocity impact by manganin wire pressure transducer
Electrical and mechanical design of dc amplifier to provide excitation and amplify signals from transducers, sensors, and other devices
Synthesizing fluid light modulator using ferromagnetic fluid for transducing electrical signal into corresponding spatial transparency distribution