Tim McDonald, Author at Electro Magnetic Applications, Inc.

Figure 3.1 Aluminum house providing the basic barrier for lightning shielding of critical electronics

Rail Lightning

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 […]

Testing Service: Transfer Impedance Measurement

Transfer Impedance measurements of cables is the best metric for determining EMC/EMI/Lightning performance of cable shields and connectors. It can be used to predict the levels inside a system based on the outside EMC environments. It is also an outstanding quality control metric for cable harnesses. Contact EMA for more information on how to […]

Consulting Services

Our aerospace and defense clients need their systems and equipment to be safe, functional, and compatible with the electromagnetic environment. EMA’s deep experience with advanced aerospace systems and our wide-ranging analysis and test support capabilities work together to make us a premier consulting partner to aerospace and defense clients at locations around the world. EMA […]

Lightning Simulation Validation

Lightning Simulation Validation EMA has supported Bombardier and Embraer in lightning simulation validation exercises for lightning effects on a full aircraft as well as a representative wing test box. The results were presented as several separate papers at the International Conference on Lightning and Static Electricity (ICOLSE) in 2015 and 2019. The three papers describe two validation campaigns in […]

Rail induced interference from power lines

Railroad Signal Protection: Planning New Power Transmission lines or Planning around Existing Lines Railroad companies and power distribution networks often work together by sharing the same right of way. There are several concerns surrounding power transmission lines in proximity to railways. Current running in transmission line conductors produce an electric field that induces a voltage […]

Lightning Simulation Software

When it comes to lightning simulation software, you can choose a simulation suite that is a one-size-fits all general solver. Why not select a tool that has been developed with your application in mind? Something that has a significant validation heritage and a team of domain experts to support it? That’s the advantage of EMA3D. […]

HIRF and Lightning Aircraft Certification Services Business Case

The PDF document below describes the EMA HIRF and Lightning Aircraft Certification Services Business Case HIRF and Lightning Aircraft Certification Services Business Case

HIRF and Lightning Aircraft Certification and Design

By Tim McDonald This post describes why you would want to use an advanced simulation approach to HIRF and lightning aircraft certification and design. The Problem Design Phase: Vendors and avionics team needs to know the E3 transients/levels at their device interfaces Certification Phase: Need to know that the E3 transients/levels at each device is […]

High Altitude Electromagnetic Pulse (HEMP) Simulation Example

Notional Missile Responses to an EMP Environment Using FDTD Simulation Techniques By Cody Weber Contents Analysis Motivation How CEM Modeling is Used in a Verification Program Supported Test Programs In-flight System EMP Response Simulation Approach Simulation Software Software Features EMP Handbook Values 1st Model Simulation Setup 1st Model Antenna Response 2nd Model Simulation Setup 2nd […]

The fill factor of an actual aircraft means that careful analysis techniques are required

HIRF Certification

EMA® High Intensity Radiated Fields (HIRF) radiated environments certification services consultants provide end-to-end support in all aspects of the certification. EMA® has extensive experience in HIRF certification and is ready to provide solutions to achieve FAA-style certification. Our comprehensive capabilities include: HIRF design support based on advanced simulation Simulation of the HIRF levels early in […]

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