Software

Datacasting V3.0

Datacasting V3.0 provides an RSS-based feed mechanism for publishing the availability of Earth science data records in real time. It also provides a utility for subscribing to these feeds and sifting through all the items in an automatic manner to identify and download the data records that are required for a specific application.

Posted in: Software, Data Acquisition, Briefs, TSP

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Mission Data System Java Edition Version 7

The Mission Data System framework defines closed-loop control system abstractions from State Analysis including interfaces for state variables, goals, estimators, and controllers that can be adapted to implement a goal-oriented control system. The framework further provides an execution environment that includes a goal scheduler, execution engine, and fault monitor that support the expression of goal network activity plans. Using these frameworks, adapters can build a goal-oriented control system where activity coordination is verified before execution begins (plan time), and continually during execution. Plan failures including violations of safety constraints expressed in the plan can be handled through automatic re-planning.

Posted in: Software, Briefs, TSP

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Adaptive Distributed Environment for Procedure Training (ADEPT)

ADEPT (Adaptive Distributed Environment for Procedure Training) is designed to provide more effective, flexible, and portable training for NASA systems controllers. When creating a training scenario, an exercise author can specify a representative rationale structure using the graphical user interface, annotating the results with instructional texts where needed. The author’s structure may distinguish between essential and optional parts of the rationale, and may also include “red herrings” — hypotheses that are essential to consider, until evidence and reasoning allow them to be ruled out.

Posted in: Software, Briefs, TSP

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LEGEND, a LEO-to-GEO Environment Debris Model

LEGEND (LEO-to-GEO Environment Debris model) is a three-dimensional orbital debris evolutionary model that is capable of simulating the historical and future debris populations in the near- Earth environment. The historical component in LEGEND adopts a deterministic approach to mimic the known historical populations. Launched rocket bodies, spacecraft, and mission-related debris (rings, bolts, etc.) are added to the simulated environment. Known historical breakup events are reproduced, and fragments down to 1 mm in size are created.

Posted in: Software, Briefs, TSP

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Simulation and Analysis Drive Transmission Development

3D software enables design and optimization of complex geometry and structures. Vicura is a developer of manual transmissions and dry dual clutch transmissions, as well as powertrain integration in a large number of front wheel drive and all wheel drive applications. The company’s engineers are responsible for a broad range of complex simulation and analysis testing including system, structure, and fluid mechanics. The team performs critical simulation and analysis to ascertain the strength, stiffness, thermal, and dynamic behaviors of all possible transmission assemblies and components (housings, shafts, gears, synchronizers, clutches, etc.).

Posted in: Software, Briefs

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Conjugate Thermal Analysis of a Generic LED Light Bulb

Thermal and fluid modeling is used to understand temperature fields and airflow around the bulb. The design and application of LED (Light Emitting Diode) lighting solutions provides new opportunities for thermofluid- mechanical modeling enabled by multiphysics analysis. A coupled thermal and fluid modeling effort was used to understand the temperature fields and airflow around a generic LED light bulb.

Posted in: Physical Sciences, Software, Briefs

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Analysis of Spiral Resonator Filters

Improved performance coupled with reduced size requires the development of novel filter designs for use in advanced wireless systems. Increasing demand for more advanced wireless systems necessitates the introduction of novel designs that are capable of simultaneously fulfilling multiple operating and performance criteria. The implementation of high-datarate transmission systems has required the development of innovative designs for microwave filters that must fit within a reduced volume to allow integration of multiple filters in more compact wireless systems. Additionally, the filter’s specific passband frequencies and quality factors must be achieved within the system’s geometrical and topological constraints.

Posted in: Physical Sciences, Software, Briefs

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