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Linear - NASA Technology Transfer Program

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Last Updated: 22 September 2022

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Double-Fed Induction Linear Alternator

Innovators at NASA's Glenn Research Center have developed a lightweight, double-fed induction linear alternator capable of high environmental quality. Although traditional linear alternators can not withstand temperatures of 250 degrees;C, this innovation has the ability to operate at 950 degrees;C with increased performance and convenience. The development replaces the conventional permanent magnet with a copper electromagnetic Halbach circular array. The engine/alternator unit is one-tenth the size of a conventional unit when used with the double action extremely light thermo-acoustic converter.

Source link: https://technology.nasa.gov/patent/LEW-TOPS-114


Data Transfer for Multiple Sensor Networks

Since the sensor is part of the frequency generator's transfer function, NASA Glenn's innovation enables the operating frequency of a sensor instrument to be time-variant. Each instrument that uses a sensor has its own unique signature on the continuous output of the sensor. As a result, multiple instruments' outputs may be superimposed on one another by a linear mixing medium and then separated at a common receiving node in a more temperate location using one of several linear source separation methods.

Source link: https://technology.nasa.gov/patent/LEW-TOPS-76


Handheld Spectrometer

NASA is using the lens/chip in a very small spectrometer that will be mounted on tires of a rover to measure soil on the moon or Mars. Since Fresnel imaging works as reliable focal points of spectrum within a short optical distance, the shorter optical path length allows for the small size. The conversion to a differentially linear Fresnel lens saves the need for aperture slit driver electronics and moving parts and reduces manufacturing. NASA is looking for partners to develop the spectrometer for industrial applications.

Source link: https://technology.nasa.gov/patent/LAR-TOPS-115


Wireless Electrical Devices Using Floating Electrodes

The Langley Research Center at NASA has developed a wireless, connection-free, open circuit technology that can be used to build electrical circuits such as sensors that require no physical contact with the measurements. The technology uses a NASA award-winning magnetic field response measurement system to supply electricity to the device and, in the case of a sensor system, physical property measurements are obtained from them.

Source link: https://technology.nasa.gov/patent/LAR-TOPS-83


In Situ Performance Monitoring of Piezoelectric Sensors and Accelerometers

An in-site measurement system for monitoring piezoelectric sensor results, particularly accelerometers, was developed. Assessments can be carried out on site or integrated into instrumentation systems. With this monitoring device, degraded sensor results can be quickly and economically identified with a handheld unit or integrated directly into test equipment, making it quickly and economically accessible.

Source link: https://technology.nasa.gov/patent/SSC-TOPS-1


Reflection-Reducing Imaging System for Machine Vision Applications

These shadows appear in new measurement schemes for a variety of reasons, including the severe back-reflections from wind tunnel viewing port windows and variations in the imaged volume's refractive index.

Source link: https://technology.nasa.gov/patent/LAR-TOPS-347


Integral Tuned Mass Absorber for Turbine Blades

NASA's Marshall Space Flight Center has developed a unique turbine blade design and manufacturing process that results in a significant reduction in turbine blade resonant vibration. Importantly, the innovation also aids in improved predictive modeling of the resonant behaviour of new blisk designs' improved predictive modeling because the tuned-mass absorber acts as a linear device. In comparison, conventional blade dampers design is extremely complicated, and therefore requires an expensive iterative testing service devoted to validation of the damper design.

Source link: https://technology.nasa.gov/patent/MFS-TOPS-111


Handheld Metal Tube Straightener

Straightening long metal tubing is generally achieved by rollers, but rollers can be used to delay or complicate bend-removal near the end of the tube, which may result in linear scratches on the straightened area. The handheld tube straightener can bend small and large bends near and at the end of a tube so that it can be swaged into any commercial swage fitting.

Source link: https://technology.nasa.gov/patent/MSC-TOPS-107


Stirling Thermoacoustic Power Converter and Magnetostrictive Alternator

Innovators at NASA's Glenn Research Center have invented two new technologies that make Stirling engines more effective and less costly. First, Glenn's thermoacoustic power converter converts noise into electric energy. This thermoacoustic engine converts to high thermal-to-electrical efficiency with no moving parts, unlike conventional Stirling-based methods. Stirling engines' second innovation for Stirling engines replaces the traditional linear alternator with a magnetostrictive alternator that converts the oscillating pressure wave into electric power.

Source link: https://technology.nasa.gov/patent/LEW-TOPS-80


Thermal Management for Aircraft Propulsion Systems

NASA's Glenn Research Center's Innovators have developed a lightweight, reliable thermal management system that increases overall fuel efficiency from 40 to 60%. Conventional aircraft propulsion systems are struggling to keep high-powered electric motors and electronics cool without resorting to additional mass and complexity that negate the benefits of electric propulsion in aircraft. The waste heat creates a high-intensity acoustic wave, which is created by the temperature difference between the hot and cold heat exchangers.

Source link: https://technology.nasa.gov/patent/LEW-TOPS-110

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions