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首页> 外文期刊>Case Studies in Construction Materials >Evaluating the interaction between engineered materials and aircraft tyres as arresting systems in landing overrun events
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Evaluating the interaction between engineered materials and aircraft tyres as arresting systems in landing overrun events

机译：评估工程材料与飞机轮胎之间的相互作用，作为着陆超支事件中的逮捕系统

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According to the registered databases of air accidents around the world, landing overruns are the most probable accidents among all runway excursion events. Although new aircraft are enhanced with the latest technologies that improve the maneuvers safety, the frequency of landing overruns are bound to increase because of the ascending growth rate of annual traffic. The principal scope of this paper is to evaluate the functionality of Engineered Materials Arresting System (EMAS) as a mitigation strategy to reduce the possible consequences of landing overrun events and in particular to determine if installing an EMAS can help land-locked airports to meet Federal Aviation Administration (FAA) recommendations in order to upgrade their Runway End Safety Areas (RESAs). In the previous studies, not enough investigations are dedicated to predicting the behavior of the aircraft and its deceleration rate after interfering EMAS and how different materials as arrestor beds would modify aircraft braking distance in RESA. Therefore, secondary objective of this paper is to determine the most optimum height of EMAS slabs, in function of execution costs and accident severity reduction rate. In this regard, a MATLAB?-based numerical code, which simulate the tire-pavement interface, is developed in order to evaluate the functionality of EMAS for aircraft ground maneuvers. Although this code is developed for both dry and wet runway conditions, dry runway’s surface is selected as the boundary condition of this study. It simulates aircraft arresting distance by calculating a dynamic skid resistance between aircraft main gear and runway pavement with a fix time step. The results are plotted as risk contour intervals on the layout of EMAS that is installed at the RESA. In addition, this numerical code is adopted in order to perform a sensitivity analysis on five arresting bed materials, which consist of three low-density concretes with maximum crushing stress thresholds of 172500, 345000 and 930000 Pa, one gravel-based material and one foam aggregate-based mixture. Among all, low-density concrete with the highest crushing strength causes shorter aircraft arresting distance.
机译：根据世界各地的空袭数据库，着陆超支是所有跑道游览活动中最可能的事故。虽然新飞机随着改善机动安全的最新技术而增强，但由于年度交通的增长率增加，着陆超支的频率受到增加。本文的主要范围是评估工程材料逮捕系统（EMA）作为缓解策略，以减少降落超支事件的可能后果，特别是确定安装EMAS是否可以帮助陆地机场以满足联邦航空管理局（FAA）建议升级其跑道最终安全区域（RESAS）。在以前的研究中，没有足够的调查致力于预测飞机的行为及其在干扰EMAS之后的减速率以及如何将不同的材料作为阻塞床如何修改在RESA中的飞机制动距离。因此，本文的次要目的是确定EMAS板的最佳高度，执行成本和事故严重程度降低率。在这方面，开发了一种模拟轮胎路面接口的基于MATLAB的数字代码，以评估飞机地机组的EMA的功能。虽然这段代码是为干燥和湿润的跑道条件开发的，但干燥的跑道表面被选为本研究的边界条件。它通过计算飞机主齿轮和跑道路面之间的动态滑动阻力来模拟飞机滞留距离。结果绘制为在RESA安装的EMA的布局上作为风险轮廓间隔。此外，采用该数值代码以对五种抑制床材料进行灵敏度分析，该床材料由三个低密度的混凝土组成，其中三个低密度的混凝土具有172500,345000和930000Pa，一种碎石基材料和一个泡沫基于骨料的混合物。其中，具有最高粉碎强度的低密度混凝土导致飞机滞留距离较短。

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