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High safety requirements in the low-altitude airspace will be required for the increasing number of electric propulsion systems that will be airborne. NASA Ames has devised a fault isolation scheme for unmanned aerial vehicles' electric powertrains. Given the available evidence gathered by sensor data, this framework aids the fault isolation process by determining the likelihood of specific fault or root causes.
Source link: https://technology.nasa.gov/patent/TOP2-305
The In Situ Wire Damage Detection and Rerouting System used by NASA Kennedy Space Center is looking for commercial customers interested in the commercial usage of the In Situ Wire Damage Detection and Rerouting System. The In Situ Wire Damage Detection and Rerouting System is based on a miniaturized inline connector with self-monitoring electronics that use time domain reflectometry to detect wire failures and determine fault type and fault location on powered electrical wiring.
Source link: https://technology.nasa.gov/patent/KSC-TOPS-6
The most significant aspects of human-led model development are often the sheer number of playback files, 2 the analysis for noise and lag in the data, and, 3 debugging the fault/test relationships in the model. To solve these issues, i-DME can wirelessly playback large data sets in order to locate time points of interest where user-set performance standards for detection and isolation have been ignored. To solve these challenges, i-DME can automatically playback large data sets in order to locate time points of interest where user-set performance criteria for detection and isolation are in breach. i-DME modifies the diagnostic model by its abstract representation and diagnostic matrix D-matrix.
Source link: https://technology.nasa.gov/patent/TOP2-245
The invention is a PC/104-Plus form-factor product based on a peripheral component interconnecting local bus controller and target. It can be reprogrammed from connectors directly on the board, and is able to both receive and control the clock for system and local peripherals, allowing it to function as either a PCI bus host controller or PCI target device interface.
Source link: https://technology.nasa.gov/patent/LAR-TOPS-149
The capability of individual battery cells in series and error detection of individual cells in parallel within a battery pack of hundreds of cells is included in NASA's BMS. It provides a reliable and potentially low-cost management system for high-voltage battery systems, including lithium-ion battery systems that are used in electric vehicles and other next-generation renewable energy applications.
Source link: https://technology.nasa.gov/patent/MSC-TOPS-40
To enable turbo-electric and hybrid electric propulsion, innovators at NASA's Glenn Research Center's Glenn Research Center have developed a variable-frequency, alternating current power system. Glenn's technology incorporates double-fed electric machines and a high-voltage, variable-frequency power controller to dramatically reduce the weight of an aircraft's power electronics for turbo-electric propulsion, while still providing high specific torque and variable thrust.
Source link: https://technology.nasa.gov/patent/LEW-TOPS-104
This fault-tolerant design features a unique protective shroud that shields its interior seal element from volatile conditions that can quickly degrade the seal material and lead to higher leak rates. As the shroud comes into contact with the intended mating surface, it will retract to reveal the seal element, resulting in a tight, leak-proof interface. When it comes time to crack the seal, the process reverses itself, and the shroud arms return to their extended position to cover and protect the seal element.
Source link: https://technology.nasa.gov/patent/LEW-TOPS-116
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