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.

在世界某些地区运营的商用飞机会经受恶劣的大气条件，这可能会影响现代航空发动机的效率和完整性。在此贡献中调查的条件是沙尘暴后的多尘大气。具体而言，通过模拟三个独立日历月中的爬升轨迹来估算在多哈机场（IATA：HIA）以外运营的空中客车A380-841（Rolls-Royce Trent 900）的发动机吸入的灰尘风暴已经确定。大气模型包含了来自哥伦尼实时大气监测服务数据库附近的欧洲中距离天气预报中心（ECMWF）的尘埃浓度后兆。共考虑了365个航班。每次飞行吸入发动机核心的平均粉尘质量约为8.5 g。使用压缩机结垢预测模型，吸尘可将渐近劣化速率时间常数减少约8倍。在所考虑的时间范围内选择了最严重的沙尘暴进行进一步检查。该航班被标记为灰尘飞行，在此期间，摄入引擎核心的灰尘总量超过了每月平均值两个标准差。起飞后不久，在第一个爬升段的中途，出现了22 mg / s的峰值粉尘摄入速率。当飞机从3,000英尺上升到10,000英尺时，出现第二个高峰。最后，在波斯湾上停留20分钟的过程中摄入的灰尘估计约为8 g，这与在尘土飞扬的一天爬升过程中摄入的灰尘大致相同。结果表明，基于任务的方法对于确定多尘环境中飞机发动机的耐久性可能更有用。