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Aircraft engine dust ingestion following sand storms.
- Source :
-
Aerospace Science & Technology . Nov2020, Vol. 106, pN.PAG-N.PAG. 1p. - Publication Year :
- 2020
-
Abstract
- Commercial aircraft operating in some regions of the world are subject to harsh atmospheric conditions that can affect the efficiency and integrity of modern aero-engines. Conditions that are investigated in this contribution are dusty atmospheres following sand storms. Specifically, the dust ingested by the engines of an Airbus A380-841 (Rolls-Royce Trent 900) operating out of Doha airport (IATA: HIA) is estimated by simulating climb-out trajectories over three separate calendar months during which a number of sand storms have been identified. The atmosphere model incorporates dust concentration hind-casts from the European Centre for Medium-Range Weather Forecasts (ECMWF) near real-time Copernicus Atmosphere Monitoring Service database. A total of 365 flights were considered. The average dust mass ingested into the engine core per flight is estimated as ∼8.5 g. Using a compressor fouling prediction model, the dust ingestion reduces the asymptotic deterioration rate time constant by a factor ∼8. The worst dust storm within the time frame considered is selected for further examination. This flight is flagged as a dust-flight , during which the total mass of dust ingested into the engine core exceeds the monthly mean by two standard deviations. A peak dust ingestion rate of 22 mg/s occurs shortly after take-off, midway through the first climb segment. A second peak presents as the aircraft transitions into the climb from 3,000 feet to 10,000 feet. Finally, the dust ingested during a 20-minute holding pattern over the Persian Gulf is estimated as ∼8 g, which is approximately the same as the dust ingested during climb-out on a very dusty day. The results suggest that a mission-based approach may be more useful for determining aircraft engine durability in dusty environments. [ABSTRACT FROM AUTHOR]
- Subjects :
- *SANDSTORMS
*DUST ingestion
*AIRPLANE motors
*DUST
*DUST storms
*WEATHER
Subjects
Details
- Language :
- English
- ISSN :
- 12709638
- Volume :
- 106
- Database :
- Academic Search Index
- Journal :
- Aerospace Science & Technology
- Publication Type :
- Academic Journal
- Accession number :
- 146535810
- Full Text :
- https://doi.org/10.1016/j.ast.2020.106072