Abstract: A system and method for measuring the position of at least one field producing element (e.g., a magnet) without a direct electrical or physical connection between the field producing element and one or more sensors. In one embodiment, the output from an array of sensors (e.g., Hall Effect sensors) is curve fit using an algorithm having a characteristic bell curve (e.g., curve fit tracking algorithm, center of gravity algorithm, etc.) to determine at least one of an absolute or relative position associated with the field producing element and/or a property associated with the field producing element (e.g., magnetic flux). Another embodiment is directed to detecting errors in one or more of the sensors and excluding the output of the faulty sensors in determining the position associated with the field producing element.

Abstract: An on-board inert gas generation system that provides inert gas to a fuel tank of an aircraft. The system includes an air compressor for providing a supply of compressed air, the air compressor being driven by a compressor motor. The system further includes a separator for separating the inert gas from the compressed air provided by the air compressor, the inert gas being substantially oxygen depleted. In addition, the system includes an output for delivering the inert gas from the separator to the fuel tank, and a ground fan for providing air flow to cool the compressed air prior to the compressed air being separated by the separator, the ground fan being driven by a ground fan motor.