Project Oculus, an experimental configurable sensor platform for deploying airborne sensors on a C-130 aircraft, is currently in its pre-flight testing phase. The electronics driving the platform are available commercially off the shelf (COTS) and as such are not automatically rated to comply with stringent military electromagnetic standards as defined in MIL-STD-461. These COTS electronics include efficient switching power converters, variable frequency motor drives (VFD), and microprocessor based equipment, all of which can present electromagnetic interference (EMI) issues. Even in a design where EMI issues were not considered up front, it is often possible to bring the overall configuration into compliance.Switching and digital clock signals produce both conducted and radiated noise emissions. Long cable runs and enclosure apertures become noise transmitting antennas. Large switching currents place noise on the power lines causing interference with other equipment. These problems became apparent during initial EMI compliance testing. This publication will outline the shielding and filtering techniques used to resolve these problems in preparation for flight testing and evaluation.
Electromagnetic Compliance Issues of Project Oculus
Sae Technical Papers
Aerospace Technology Conference and Exposition ; 2005
2005-10-03
Aufsatz (Konferenz)
Englisch
Electromagnetic Compliance issues of Project Oculus
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