SYSTEMS AND METHODS FOR DETECTING VOLCANIC ASH EMBEDDED IN WATER VAPOR CLOUDS

摘要

Onboard systems and methods for early detection that an aircrafthas flown into a volcanic ash plume embedded within a water vapor cloudhaving a concentration of a volcanic ash which would be dangerous to anaircraft. The detection method generally comprises the steps of measuring theinfrared emission characteristics of a jet engine exhaust and generating adetection signal when the intensity of infrared emissions at or near aspectralpeak wavelength exceeds a threshold.