Patent ID: 9020764
Filing Date: 2015-04-28
Classification: B64D,G01N

Abstract:
1. Method for detection and identification of gases in aircraft interior spaces, wherein a supply air of an aircraft interior space of an aircraft is supplied to a measurement device comprising an ion mobility spectrometer, wherein measurement results of the measurement device are analyzed using mathematical methods, and the mathematical methods are divided into a calibration and a gas measurement, wherein the calibration includes a partition of a measurement range of the measurement device into gas classes and in an association of limit values for each gas class, and the gas measurement includes identification of the gas classes and determination of a gas intensity, conclusions are drawn with respect to a maintenance state of an aircraft engine located in an intake region of an intake channel of the measurement device by (i) changing the intake channel of fresh air of the aircraft interior space, or (ii) changing at least one operating parameter of the aircraft engine, and supply air comprises a fraction of fresh air entering into the supply air via a plurality of aircraft engines, wherein the intake channel of fresh air is changed by closing the supply air from an individual aircraft engine of the plurality of aircraft engines.