Browse Publications Technical Papers 2019-01-1964
2019-06-10

A Continuing Investigation of Diurnal and Location Trends in an Ice Crystal Icing Engine Event Data Base 2019-01-1964

This paper is an update of the analysis of Boeing weather related ICI engine power loss events presented by Bravin et al. (SAE 2015-01-2130). The update will provide summaries of events since 2015, including the geographical and time of day distributions, and an analysis of any overall differences in the meteorological properties during events relative to pre-2015 events. In this paper, continental events in the event data base are studied in more detail. In particular, events over continental landmasses will be individually examined to determine the nature of the clouds in which they occurred. Detailed studies of events over continental Africa and South America will be examined. The intention will be to determine if the frequency of continental events has increased since the earliest studies, to quantify the fraction of cases which can be categorized as vigorous continental convection, to examine when in the evolution of the cloud the event occurred and in what proximity to regions of active cells, and to identify any fundamental differences of engine events in continental versus oceanic clouds. The study will provide further information for developers of nowcasting algorithms, and may help determine if the Appendix D/P assessment would benefit from further flight measurements in a continental cloud type.

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