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Build, Assemble, Test (BAT) Planning and Execution Resources Application

NASA’s Jet Propulsion Laboratory, Pasadena, California BAT is a Web-based application used for the assembly and inspection of critical flight and associated ground support hardware for JPL missions that are developed in-house. It is used to capture and communicate data that is unique to a part or assembly that cannot be captured in an engineering drawing or a test procedure. It includes a list of parts and tools, along with specific steps required for building and assembling a piece of hardware.

Posted in: Briefs, TSP, Electronics & Computers

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Get Your Software Based Medical Device FDA Approved

Learn from industry FDA and certification experts in the medical equipment industry as they discuss how to address the enhanced scrutiny from government agencies that can introduce significant delays with the commercial release of software-related medical devices.

Posted in: Webinars, On-Demand Webinars

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Symbolic Techniques for Model Code Optimization: FMI Applications

Since its inception, the FMI standard has become the primary method for model transfer and co-simulation, providing a smooth, error-free technique for design engineers to deliver their work without manual integration or resorting to other proprietary tools. At the same time, advanced symbolic technologies have emerged that provide extremely fast auto-generated code for the implementation of dynamic system models and enable advanced analysis applications. This paper describes symbolic techniques employed under the hood for dynamic system model formulation and optimized code generation. One application where the FMI standard has been used is for generating a functional mockup of an automatic transmission from MapleSim, and implementing it in dSPACE's SCALEXIO to perform a full-vehicle, real-time simulation.

Posted in: White Papers, Simulation Software

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Expediting the Process of TET Meshing Highly Complex Solid Geometry for FEA

Meshing solid geometry with tetrahedral elements is a quick way of creating finite element models, but is not without its challenges. In some cases, solid geometry cannot be successfully meshed by the most advanced tetrahedral mesher. In many other cases, a tetrahedral mesh is produced, but is composed of poorly distorted elements that are inadequate for finite element analysis.

Posted in: On-Demand Webinars

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Application Builder and COMSOL Server™

In conjunction with SAE International COMSOL Server™ lets you get the most out of simulation apps created with COMSOL Multiphysics® and the Application Builder. Using the Application Builder, create custom applications from your COMSOL Multiphysics® models to improve productivity throughout your entire organization, from engineering and manufacturing to sales.

Posted in: On-Demand Webinars

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Tool for Turbine Engine Closed-loop Transient Analysis (TTECTrA)

John H. Glenn Research Center, Cleveland, Ohio The current steady-state performance-based system studies are not adequate to evaluate certain advanced technologies for the challenges associated with meeting the transient performance requirements without better definition and control of component operating margins. Additional dynamic analyses would require more detailed, physics-based, component-level models and controllers in order to better identify dynamic issues that may arise during operation of the engine. The additional complexity in these models increases the effort necessary throughout the design processes, including the system-analysis step. The solution would be a physics-based engine model with full envelope controller. C-MAPSS and C-MAPSS40k are examples of engine models with full envelope controllers, but because they are designed to model a specific engine, they are not good candidates for systems analysis.

Posted in: Briefs, TSP, Electronics & Computers

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Wald Sequential Probability Ratio Test for Space Object Conjunction Assessment

The decision procedure is based on targets for false alarm and missed detection rates, along with a prior assessment of the risk of collision, which is independent of the orbit determination. Goddard Space Flight Center, Greenbelt, Maryland When a maneuverable spacecraft confronts a potentially unsafe conjunction with another space object, its operators must decide whether to maneuver to mitigate the risk of a collision. Such decisions may not be straightforward, since the operators must balance their confidence in the predictions that detected the conjunction, the actual likelihood of a collision, any risk inherent in performing the maneuver, interruptions to the mission’s ongoing operations, and long-term consequences such as depletion of consumable propellant. The most common metric for assessing the risk associated with a conjunction is the collision probability.

Posted in: Briefs, Electronics & Computers

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