Landing Site Reachability in a Forced Landing of Unmanned Aircraft in Wind
Landing Site Reachability in a Forced Landing of Unmanned Aircraft in Wind
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DOI：
10.2514/1.c033856
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发表时间：
2017-02
影响因子：
2.2
通讯作者：
M. Coombes;Wen‐Hua Chen;P. Render
中科院分区：
文献类型：
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作者：
M. Coombes;Wen‐Hua Chen;P. Render
自主应急管理系统，如强制着陆系统，其对发动机故障做出适当的反应，对于无人驾驶航空器系统的安全操作是重要的。本文详细介绍了一种方法，以确定任何可能的紧急着陆点的可达性在稳定均匀风条件下的迫降。基于飞机滑翔性能，提出了一种计算最小高度损失航迹的方法。通过定义最小高度损失转弯路径，采用余摆线方法考虑了风向和风速。为了便于实时实现，在不损失精度的情况下，推导了简化的滑翔方程。可以计算每个站点的可达性以及飞机的安全裕度。该方法具有通用性，也可为迫降情况下的飞行员提供决策支持。两种类型的飞机…
Autonomous contingency management systems, such as a forced-landing system, which reacts appropriately to an engine failure, are important for the safe operation of unmanned aircraft systems. This paper details a method to ascertain the reachability of any possible emergency landing site for a forced landing in steady uniform wind conditions. With knowledge of the aircraft’s state, such as speed, heading, location, and orientation of a landing site, a method to calculate a minimum height loss path is developed based on aircraft glide performance. Wind direction and speed are taken into account using a trochoidal approach by defining the minimum height loss turn path. To facilitate real-time implementation, simplified gliding equations are developed without accuracy loss. The reachability of each site can be calculated as well as how much safety margin an aircraft would have. This method is generic and could also provide decision support for human pilots in forced-landing situations. Two types of aircraft,...