邵慧.考虑几何限制的航向道模式设计[J].民用飞机设计与研 究,2019(4):41-44SHAO Hui.[J].Civil Aircraft Design and Research,2019,(4):41-44.
考虑几何限制的航向道模式设计
  
DOI:10.19416/j.cnki.1674-9804.2019.04.007
中文关键词:自动飞行  几何限制  航向道模式
英文关键词:automatic flight control system  geometry limit  LOC mode
基金项目:
作者单位
邵慧 上海飞机设计研究院上海 201210 
中文摘要:民机自动飞行系统在截获LOC信标切入跑道中心线时,由于空间几何限制导致较大超调,会对飞行安全产生不利影响。针对这一问题,设计了一种考虑几何限制的航向道模式。为了解决LOC线性区外信号不能用于自动飞行指令计算的问题,利用飞行管理系统的现有功能计算出飞机偏离跑道中心线的水平偏差;使用切入点位置和最大滚转角的几何限制作为机动判断条件,同时以进入线性区作为LOC模式的激活条件,使得飞机在达到几何限制时能提前机动。最后,通过仿真对比了采用三种不同LOC截获方法时飞机的响应,仿真结果表明所提出的方法能够有效解决因几何限制导致的LOC截获超调问题。
英文摘要:Localizer(LOC) mode design of the commercial aircraft is designed to deal with the big overshoot caused by the geometry limit when the aircraft captures the Localizer signal and turns to the runway centerline. A method in which Flight Management System(FMS) calculates the lateral deviation between the aircraft and the runway centerline, is used beyond the LOC selected course sector. The geometry limit is part of the capture maneuver criteria, and LOC selected course sector is also used as the LOC mode activate criteria in order to allow pre-maneuver in some Instrument Landing System(ILS) approach scenario. The simulation results show that the method in the paper can decrease the overshoot caused by geometry limit effectively.
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