The Infra-Red Analysis of Aircraft Cabin-Gas Atmospheres,

摘要

The analysis of the air-bleed cabin gas produced by Olympus and Pegasus engines has been carried out by infra-red spectrometry. The method utilizes a conventional double beam recording infra-red spectrophotometer equipped with a pair of multireflection long path cells. The lower limits of detection of the various contaminants listed in the specification have been determined both individually and in conjunction with large amounts of other impurities. This method has also been extended to cover air-bleed cabin gas samples which have been taken from development engines in which malfunctions of the engine components have been simulated. (Author)