Special Coverage

Transducer-Actuator Systems for On-Machine Measurements and Automatic Part Alignment
Wide-Area Surveillance Using HD LWIR Uncooled Sensors
Heavy Lift Wing in Ground (WIG) Cargo Flying Boat
Technique Provides Security for Multi-Robot Systems
Bringing New Vision to Laser Material Processing Systems
NASA Tests Lasers’ Ability to Transmit Data from Space
Converting from Hydraulic Cylinders to Electric Actuators
Automating Optimization and Design Tasks Across Disciplines
Vibration Tables Shake Up Aerospace and Car Testing
Supercomputer Cooling System Uses Refrigerant to Replace Water

Requirements Engineering for Safety-Critical Systems

In safety-critical projects, Requirements Engineering is often perceived as a “necessary evil” rather than active support in the development process. Challenges arise between the writing of requirements, categories and levels of abstraction, and the high degree of freedom in Functional Safety Standards, and the practical benefits of effective requirements engineering are lost.

Posted in: On-Demand Webinars, Software
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Automating Coding Standards

Coding standards are proven to improve code quality, but without automation they are difficult to enforce and may be ignored by developers. Download this white paper to learn how to create a coding standard from existing resources and use a static analyzer to ensure it is followed by your developers.

Posted in: White Papers, Software
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How to Choose the Right Coding Standard

Security vulnerabilities can put users at risk and damage companies’ reputations, and these risks increase as more devices are connected to the internet. Download this white paper to learn how to choose and enforce the best coding standard for your application to reduce these risks.

Posted in: White Papers, Software
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Safety and Security for Assisted and Autonomous Vehicles

Advanced Driver Assistance Systems and the move towards autonomous vehicles dramatically increases the complexity of safety-critical code in automotive applications. Read this white paper to learn more about the potential vulnerabilities, the standards and legislation that apply and how developers can use coding standard to improve safety and security.

Posted in: White Papers, Software
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Launch Trajectory Acquisition System (LTAS) Source Slaving Selector (LS3)

The LTAS Source Slaving Selector application was developed to transmit LTAS data in User Datagram Protocol (UDP) packets using the LTAS data from one of multiple incoming UDP streams. Users select the data stream via a graphical user interface (GUI), which also displays a variety of data values from the LTAS frames. Prior art that performs a similar objective includes the Selectable Internet Protocol Slaving (SIPS) system, which can perform the objective, but can also create problems when transmitting slaving LTAS data by filling some data fields with zeroes. This is especially true for the velocity data fields. In addition, SIPS' GUI does not include X' and Y' angles, which are a form of local coordinates. The SIPS software was built using an older version of the integrated development environment (IDE) and compiler.

Posted in: Briefs, Software, Trajectory control, Architecture, Computer software / hardware, Computer software and hardware, Architecture, Computer software / hardware, Computer software and hardware, Spacecraft
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Acoustic Propagation and Emulation Toolset (APET)

This software suite assesses the effects of terrain, weather, and computational method on acoustic propagation and audibility.

Currently, APET includes a modified version of the Rotorcraft Noise Model (RNM, version 7). It also includes the newly developed Spectral Attenuation Method (SAM), which contains the Ray Tracing Program (RTP) and two versions of a Green's Function Parabolic Equation (GFPE) code. The third component of APET is an audibility prediction scheme initially called ICHIN (I Can Hear It Now), and further developed by Wyle as AUDIB.

Posted in: Briefs, Software, Computer simulation, Acoustics, Noise, Acoustics, Noise
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AUTONOMIE Automotive System Design Software

AUTONOMIE is a MATLAB-based software environment and framework for automotive control system design, simulation, and analysis. It simulates subsystems, systems, or an entire vehicle, and predicts and analyzes fuel efficiency and performance. The software performs analyses and tests for virtual calibration, verification, and validation of hardware models and algorithms, and supports system hardware and software requirements.

Posted in: Briefs, Software, CAD / CAM / CAE, CAD, CAM, and CAE, Electronic control systems, Electronic control systems
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Numerical Method to Predict the Evaporation Time of a Water Droplet Attached to a Solid Boundary in the Presence of Fluid Flow

One of the objectives of the In-Situ Resource Utilization (ISRU) RESOLVE project was to extract water from lunar regolith by heating and then capturing and quantifying the released water. A potentially large error in measurements would occur if some of the water condensed in the piping between the oven and the water capture bed. Questions arise if condensation were to occur (either because of a low-temperature or high-pressure area): 1) how long would it take for convection and diffusion to evaporate the droplet back into the process stream, 2) how will it affect the ISRU RESOLVE process, 3) can accurate data be obtained, 4) how much longer will the process have to run to capture all the water, and 5) what conditions are the most favorable to quicken the evaporation process?

Posted in: Briefs, Software, Mathematical models, Water reclamation
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Generation of Cut- and Split-Cells for Face-Piercing Geometry in Embedded-Boundary Cartesian Methods

This innovation addresses several critical issues in the construction of cut control volumes using embedded-boundary Cartesian mesh generators. The innovation considers the case of a surface triangulation intersecting the face of a Cartesian hex without intersecting any of its edges. Such face-piercing geometry is common in practical applications, especially when surface variations occur on a smaller scale than the Cartesian hex dimensions, i.e. coarse meshes. Examples include geometric perturbances such as nozzles, or even minor surface undulations and dimples. Furthermore, the innovation also considers the case of a surface triangulation containing internal passages within the Cartesian hex. The innovation correctly handles situations where hexes split into multiple control volumes are merged together if internal connections exist within the surface.

Posted in: Briefs, Software, Mathematical models, Fabrication
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High-Speed Particle Image Velocimetry

This technology simultaneously tracks the motion of high numbers of object images under extreme, high-concentration conditions.

Particle flow fields of high particle concentration are found in many commercial applications, including chemical processing, energy conversion, pharmaceutical processing, food processing, and biomedical applications. This technology will allow, for the first time, the measurement of particle motion within high particle concentration fields.

Posted in: Briefs, Software, Computational fluid dynamics, Measurements, Particulate matter (PM)
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