An Analytical Method for Prediction of High Altitude Total Water Exposure for In-Service Long Range Aircraft

To support an industry wide response to an EASA proposed Special Condition regarding the threat of in-flight supercooled liquid water icing conditions at altitudes above FL300, Boeing 777 fleet data were used to estimate the frequency and severity of such icing occurrences. The data were from the calendar year 2019 and included ~ 950,000 airline revenue flights from around the world by multiple operators. The unique architecture of the Primary Ice Detection System (PIDS) on that model, in addition to robust meteorological data that was able to be correlated, afforded an opportunity to conservatively estimate the Total Water Exposure (TWE) and thus the Liquid Water Content (LWC) of the icing encounters captured at FL295 and above. This paper will outline the key methods used and present the findings.

• Record URL:
  • https://doi.org/10.4271/2023-01-1435
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/01487191
• Supplemental Notes:
  • Abstract reprinted with permission of SAE International.
• Authors:
  • Sanford, Jerome
  • Bravin, Melissa
  • Clarkson, Matthew
  • Natsui, Edward
• Conference:
  • International Conference on Icing of Aircraft, Engines, and Structures
  • Location: Vienna , Austria
  • Date: 2023-6-20 to 2023-6-23
• Publication Date: 2023-6-15

Language

• English

Media Info

• Media Type: Web
• Features: References;
• Pagination: pp 1111-1118
• Serial:
  • SAE Technical Paper
  • Volume: 6
  • Issue Number: 3
  • Publisher: Society of Automotive Engineers (SAE)
  • ISSN: 0148-7191
  • EISSN: 2688-3627
  • Serial URL: http://papers.sae.org/

Subject/Index Terms

• TRT Terms: Aircraft; Analysis; Civil aircraft; Snow and ice control; Vehicle fleets; Water
• Subject Areas: Aviation; Vehicles and Equipment;

Filing Info

• Accession Number: 01887371
• Record Type: Publication
• Source Agency: SAE International
• Report/Paper Numbers: 2023-01-1435
• Files: TRIS, SAE
• Created Date: Jul 14 2023 2:08PM