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Lightweight Internal Device to Measure Tension in Hollow- Braided Cordage
System, Apparatus, and Method for Pedal Control
Dust Tolerant Connectors
Foldable and Deployable Power Collection System
Iodine-Compatible Hall Effect Thruster
Development of a Novel Electrospinning System with Automated Positioning and Control Software
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Method for Automatic Optimization of Yaw Maneuvers for Orbiting Space Vehicles

Lyndon B. Johnson Space Center, Houston, Texas A new method for optimizing yaw attitude maneuvers on the International Space Station (ISS) was developed. Docking and undocking operations often require 180° yaw rotations, which are the most common large maneuvers on the ISS. When optimized, some large maneuvers, previously performed using thrusters, could be performed using control moment gyroscopes (CMGs) or with significantly reduced thruster firings. The ability to perform a non-propulsive or low-propulsive 180° yaw maneuver on the ISS has been proven through the zero propellant maneuver (ZPM) and the optimal propellant maneuver (OPM). The ZPM and OPM were created by Draper Laboratory using the computational approach. Each maneuver is unique, and can only be calculated on the ground because significant computer resources are needed for the calculations.

Posted in: Briefs, Electronics & Computers, Electronics & Computers, Software

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Architecture Framework for Fault Management Assessment and Design

Marshall Space Flight Center, Alabama Modern spacecraft, aircraft, and surface vehicles support complex science missions in harsh environments. These spacecraft and vehicles provide diverse functionality that is deployed on increasingly complex and heterogeneous hardware and mechanical systems, with stringent dependability requirements.

Posted in: Briefs, Electronics & Computers, Electronics & Computers, Software

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Spacecraft Parameter Database Tool

Goddard Space Flight Center, Greenbelt, Maryland The GOES-R Program has requirements to maintain knowledge of the GOES-R satellite onboard memory contents, including managing general satellite operations tables; processor memory dumps for memory verification; creating command loads, memory (table) loads, and command sequences to operate the satellite; verifying stored command and memory (table) loads; and to provide for operator-initiated memory dumps from satellite processors. The principal limitation is the tie to specific spacecraft architecture.

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Eliminating the Need for Payload-Specific Coupled Loads Analyses Without Mission Risk

Marshall Space Flight Center, Alabama Amore efficient structural verification process for small satellites has been demonstrated. This new process eliminates the need for payload-specific coupled loads analysis (CLA) and simplifies structural testing while not increasing mission risk. The process entails the following:

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Moon Tours Android

NASA’s Jet Propulsion Laboratory, Pasadena, California This Android app provides a native interface to the Lunar Mapping and Modeling Portal’s (LMMP) lunar data archive and analysis tools. It complements the iOS app previously released, incorporating a very similar feature set. Both apps contain a subset of the functionality available in the desktop/Web version. Compared to the iOS version of the LMMP, the Android version provides the additional tools necessary to perform elevation analysis and perimeter/area measurements.

Posted in: Briefs, TSP, Electronics & Computers, Electronics & Computers, Software

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Hollow-Core Fiber Lamp for Mercury Ion Clocks and Micro-Plasma Studies

These lamps may provide flexible spectroscopic solutions for chemical and medical analysis, as well as metrology and thin-film coating applications. NASA’s Jet Propulsion Laboratory, Pasadena, California The mercury linear ion trap frequency standard (LITS) at JPL has been demonstrated to have multiple potential applications in NASA deep space missions. An increase of the deep ultraviolet (DUV)/vacuum ultraviolet (VUV) light output from the plasma discharge lamp light source used in trapped ion clock atomic state preparation and detection would improve the clock signal-to-noise ratio (SNR) and decrease optical pumping times. Both lead to an improvement in clock short-term stability and/or enable the use of a local oscillator having lower cost and performance. A solution for higher intensity light generation is needed.

Posted in: Briefs, TSP, Tech Briefs, Imaging, Software

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3D Imaging Technology and System

Langley Research Center, Hampton, Virginia All current cameras and imaging systems have the same classical problem in practical applications. To complete the observation task, a large amount of data is captured, processed, and transmitted; then most of the data is discarded because it is not essential for the given observation task. The problem comes from the principle of the cameras and imaging systems — they are all based on the traditional concept that each pixel of the image is equal in importance, and all the pixels are captured to complete the observation task. But in the most practical applications, the pixels at different parts of images usually have different importance to the observers. For given observation and recognition tasks, only a part of the pixels on one image is essential.

Posted in: Briefs, Tech Briefs, Imaging, Software

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