Search and recovery of aircraft parts in ice-sheet crevasse fields using airborne and in situ geophysical sensors
Search and recovery of aircraft parts in ice-sheet crevasse fields using airborne and in situ geophysical sensors
复制标题
使用机载和现场地球物理传感器在冰盖裂隙场中搜索和回收飞机部件
DOI：
10.1017/jog.2020.26
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发表时间：
2020
影响因子：
3.4
通讯作者：
N. Karlsson
中科院分区：
文献类型：
--
作者：
K. Mankoff;D. van As;A. Lines;T. Bording;Joshua Elliott;R. Kraghede;H. Cantalloube;H. Oriot;P. Dubois;O. Ruault du Plessis;A. Christiansen;E. Auken;K. Hansen;W. Colgan;N. Karlsson
2017年9月30日，法航一架空客A380-800在格陵兰上空遭遇第四引擎故障。这一故障导致发动机风扇轮毂、风扇叶片和周围结构的损失。最初的搜索发现了30块轻碎片，但主要的部分，一个重约220公斤的钛风扇轮毂，没有被发现，因为它与轻碎片的下落轨迹不同，撞击到冰盖的雪表面，并迅速被漂流的雪覆盖。在这里，我们描述了用于检测风扇中心的方法和现场活动的细节。搜索区域包括两个至少50个积雪覆盖的裂缝区，宽1至~30米，雪桥厚度相似。经过21个月和6次行动，使用机载合成孔径雷达、探地雷达、瞬变电磁和自动驾驶车辆对裂缝区域进行了调查，在裂缝3.3至4米的深度约1米处发现了风扇轮毂，并由使用防坠系统的工人使用铲子、链锯、电动绞车、雪橇和汽油加热器进行了挖掘。
On 30 September 2017, an Air France Airbus A380-800 suffered a failure of its fourth engine while over Greenland. This failure resulted in the loss of the engine fan hub, fan blades and surrounding structure. An initial search recovered 30 pieces of light debris, but the primary part of interest, a ~220 kg titanium fan hub, was not recovered because it had a different fall trajectory than the light debris, impacted into the ice-sheet's snow surface, and was quickly covered by drifting snow. Here we describe the methods used for the detection of the fan hub and details of the field campaigns. The search area included two crevasse fields of at least 50 snow-covered crevasses 1 to ~30 m wide with similar snow bridge thicknesses. After 21 months and six campaigns, using airborne synthetic aperture radar, ground-penetrating radar, transient electromagnetics and an autonomous vehicle to survey the crevasse fields, the fan hub was found within ~1 m of a crevasse at a depth of ~3.3 to 4 m and was excavated with shovels, chain saws, an electric winch, sleds and a gasoline heater, by workers using fall-arrest systems.