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Spacecraft Charging

Spacecraft Charging EMA3D® includes advanced CAE tools to extend NASCAP-2K and provide spacecraft charging analysis for plasma interaction and EMC characterization in space. Many US companies rely on NASCAP-2K, but find the CAD and CAE tools, such as meshes, to be cumbersome and underdeveloped. EMA3D gives the ability to simplify, modify, and defeature geometry to […]

Railroad Protection

EMA recently published a paper at the AREMA Railway Exchange conference in Minneapolis, MN entitled: “SYSTEM LEVEL FULL SCALE LIGHTNING TESTING OF PTC WAYSIDE C&S SYSTEMS.” A summary of the paper follows: Positive Train Control requires a high degree of reliability and availability. In order to meet these requirements, CSX needed to ensure the lightning […]

EMA Webinar

Topic: Validation of Computational Electromagnetic Simulations to Support Aircraft Certification Projects for Direct and Indirect Effects of Lightning Presenter: Cody Weber Abstract: Computation Electromagnetic (CEM) simulations play an ever increasing role in the analysis and support for aircraft certification projects. CEM can be used to evaluate electromagnetic environmental effects as well as EMC/EMI system problems for […]

EMA at ICOLSE

Come see our talks at ICOLSE 2015 in Toulouse, France!  All three talks will be presented on September 9th. See below for details. Lightning Direct Effects on Anisotropic Materials from Electro-Thermal Simulation will be presented by Bryon Neufeld on Sept. 9 at 15:20 in the Cassiopée presentation room. Here’s the abstract: Mitigating lightning Direct Effects […]

DO-160 Simulations

In the measurement, a double exponential current waveform resembling lightning component A, but with 400 mA amplitude, is injected onto the shield of the cable. The cable shield was grounded to an aluminum sheet placed 2 inches below the cable, such that the current path was from the cable shield to the aluminum sheet, back to the generator ground. The open circuit voltage (VOC) was then measured at the end of the cable opposite the injection point.

Picture of system level e3 flow

System Level E3

Systems Level Perspectives for E3 and EMI Control by Tim McDonald Recently, I was invited to give a workshop talk in the IEEE EMC 2014. The entire session was interesting, and there were many good discussions afterward. My presentation is below: A key challenge for system level E3 (electromagnetic environmental effects) engineers is in translating […]

aircraft hirf

Visualizing HIRF

Visualizing HIRF Fields Inside Aircraft By Jennifer Kitaygorsky High intensity radiated fields (HIRF) can come at an aircraft from any direction, and enter the aircraft through apertures, seams and gaps. Some aircraft systems may be susceptible to this type of EM radiation, and visualizing HIRF fields can further our understanding about what’s happening inside an […]

multi conductor harness cross section

Braided Shields

Coupling through braided shields is determined by the transfer impedance, an intrinsic property of all cable shields. Here, we compare transfer impedance measurements of braided shields and various cables with ideal (round) and non-ideal (flattened) geometries.

Nanomaterials for Lightning

SAMPE 2014

Novel nanomaterials for lightning protection by Tim McDonald EMA attended SAMPE 2014 in Seattle. There were many great papers presented, and we had great discussions with attendees. In the following section, we describe EMA’s paper presented at the conference. Advanced Electromagnetic Simulation Techniques for Novel and Modern Materials in Aerospace Composites In recent years, composite […]

EM Emissions

EM Emissions

By Bryon Neufeld EMA has extensive experience in electromagnetic emissions (EM emissions) from a wide variety of sources, including cables and individual electronic components such as in aircraft avionics or wireless communications. One example of this work is in our calculation of the far-field EM emissions generated by internal electronics units in a wireless communications station.  […]

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