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When current flows through parallel conductors, there is a force

Magnetic Forces

Whenever lightning current flows on two parallel conductors, there is a force that tends to compress the two into each other. In some cases, this can lead to damage. In looking at the Magnetic Force calculations in the classic, Lightning Protection of Aircraft (self-published by Lightning Technologies division of NTS), we noticed that the equation […]

Three kinds of carbon nanotubes

Nano and Lightning

Tim McDonald of EMA recently gave a talk at the Graphene Commercialization and Applications conference. The slides from the talk are below: This is an embedded Microsoft Office presentation, powered by Office Online.

DO-160 Simulation

DO-160 Simulation

One of the challenges of electromagnetic modeling on systems (aircraft, wind turbines, etc.) is understanding the induced transients on individual pins. It is reasonably straightforward to model the currents that are induced on overall cable bundles. However, it is the current and voltage on individual conductors that often matters to system designers. The geometry is […]

Pershing missile and the cold war

E&M and the Cold War

The Pershing II was a tactical nuclear missile used during the Cold War to defend Western Europe from a possible invasion from Communist Eastern Europe. In January, 1985, a PII caught fire during assembly on its mobile launcher in Heilbronn, Germany. Several GIs were killed. Soon after, hundreds of thousands of Europeans joined protests of […]

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