In this paper, the map of a network of air routes was updated by removing the non-optimal routes and replacing them with the best ones. An integer linear programming model was developed. The aim was to find optimal ro...In this paper, the map of a network of air routes was updated by removing the non-optimal routes and replacing them with the best ones. An integer linear programming model was developed. The aim was to find optimal routes in superspace based on performance-based navigation. The optimal routes were found from a DIJKSTRA algorithm that calculates the shortest path in a graph. Simulations with python language on real traffic areas showed the improvements brought by surface navigation. In this work, the conceptual phase and the upper airspace were studied.展开更多
Airborne navigation database(NavDB)coding directly affects the result of analysis on the instrument flight procedure by the modern aircraft flight management computer(FMC).A reasonable flight track transition mode can...Airborne navigation database(NavDB)coding directly affects the result of analysis on the instrument flight procedure by the modern aircraft flight management computer(FMC).A reasonable flight track transition mode can improve the track tracking accuracy and flight quality of the aircraft.According to the path terminator(PT)and track transition characteristics of the performance based navigation(PBN)instrument flight procedure and by use of the world geodetic system(WGS)-84 ellipsoidal coordinate system,the algorithms for“fly by”and“fly over”track transition connections are developed,together with the algorithms for coordinates of fix-to-altitude(FA)altitude termination point and heading-to-an-intercept(VI)track entry point and for track transition display of the navigation display(ND).According to the simulation carried out based on the PBN instrument approach procedure coding of a certain airport and the PBN route data at a high altitude,the algorithm results are consistent with the FMC-calculated results and the actual ND results.展开更多
指出了当前民航业传统的飞行程序已逐渐被基于性能导航(Performance based navigation,PBN)飞行程序所替代,PBN进离场及进近航线设计过程中,可以灵活处理,导航点的设置不用过于依赖地面导航台的位置。然而,PBN进近程序若采用气压表垂直...指出了当前民航业传统的飞行程序已逐渐被基于性能导航(Performance based navigation,PBN)飞行程序所替代,PBN进离场及进近航线设计过程中,可以灵活处理,导航点的设置不用过于依赖地面导航台的位置。然而,PBN进近程序若采用气压表垂直引导的类精密进近方式,则需要考虑到机场的温度限制,一般温度越低,气压越低,因此,飞机上指示的高度比实际飞行高度要高,超障余度不足,可能导致飞机低飞与障碍物发生碰撞的危险。根据DOC8168文件规范,通过举例研究了PBN基于气压高度表垂直引导的进近程序如何设计,并给出了设计流程方案,该方案有利于Baro-VNAV气压式垂直导航的进近程序设计,并具有很好的可靠性和适用性。展开更多
PBN(performance based navigation)飞行程序在国内运输机场应用广泛,PBN飞行程序设计的工作难点是最后进近航段障碍物评估,为了提PBN飞行程序设计的工作效率、降低出错率,本文将基于目前飞行程序设计常用的工作平台auto CAD,建立障碍...PBN(performance based navigation)飞行程序在国内运输机场应用广泛,PBN飞行程序设计的工作难点是最后进近航段障碍物评估,为了提PBN飞行程序设计的工作效率、降低出错率,本文将基于目前飞行程序设计常用的工作平台auto CAD,建立障碍物评估模型并研究开发能自动生成最后进近航段保护区、能自动进行障碍物评估的辅助软件,使用某机场数据进行测试,经过测试验证,此辅助软件的计算过程正确、计算结果的精度符合要求。展开更多
随着我国枢纽机场交通流量的增加,终端区飞行效率的优化问题日益凸显。该文首先建立随机的模拟飞机流,采用实际运行中通过各个航路点的飞机流比率、机型混合比率等统计数据,利用改进的单服务台混合制模型(M/M/1/K),对基于性能导航(Perfo...随着我国枢纽机场交通流量的增加,终端区飞行效率的优化问题日益凸显。该文首先建立随机的模拟飞机流,采用实际运行中通过各个航路点的飞机流比率、机型混合比率等统计数据,利用改进的单服务台混合制模型(M/M/1/K),对基于性能导航(Performance Based NavigationPBN)飞行程序与传统飞行程序的终端区飞行效率进行对比。结果显示,基于性能导航飞行程序的终端区飞行效率明显高于传统进场程序,改进的单服务台混合制模型为研究终端区飞行效率提供了有效的方法。展开更多
文摘In this paper, the map of a network of air routes was updated by removing the non-optimal routes and replacing them with the best ones. An integer linear programming model was developed. The aim was to find optimal routes in superspace based on performance-based navigation. The optimal routes were found from a DIJKSTRA algorithm that calculates the shortest path in a graph. Simulations with python language on real traffic areas showed the improvements brought by surface navigation. In this work, the conceptual phase and the upper airspace were studied.
基金supported by the National Natural Science Foundation of China(u2133209)。
文摘Airborne navigation database(NavDB)coding directly affects the result of analysis on the instrument flight procedure by the modern aircraft flight management computer(FMC).A reasonable flight track transition mode can improve the track tracking accuracy and flight quality of the aircraft.According to the path terminator(PT)and track transition characteristics of the performance based navigation(PBN)instrument flight procedure and by use of the world geodetic system(WGS)-84 ellipsoidal coordinate system,the algorithms for“fly by”and“fly over”track transition connections are developed,together with the algorithms for coordinates of fix-to-altitude(FA)altitude termination point and heading-to-an-intercept(VI)track entry point and for track transition display of the navigation display(ND).According to the simulation carried out based on the PBN instrument approach procedure coding of a certain airport and the PBN route data at a high altitude,the algorithm results are consistent with the FMC-calculated results and the actual ND results.
文摘指出了当前民航业传统的飞行程序已逐渐被基于性能导航(Performance based navigation,PBN)飞行程序所替代,PBN进离场及进近航线设计过程中,可以灵活处理,导航点的设置不用过于依赖地面导航台的位置。然而,PBN进近程序若采用气压表垂直引导的类精密进近方式,则需要考虑到机场的温度限制,一般温度越低,气压越低,因此,飞机上指示的高度比实际飞行高度要高,超障余度不足,可能导致飞机低飞与障碍物发生碰撞的危险。根据DOC8168文件规范,通过举例研究了PBN基于气压高度表垂直引导的进近程序如何设计,并给出了设计流程方案,该方案有利于Baro-VNAV气压式垂直导航的进近程序设计,并具有很好的可靠性和适用性。
文摘PBN(performance based navigation)飞行程序在国内运输机场应用广泛,PBN飞行程序设计的工作难点是最后进近航段障碍物评估,为了提PBN飞行程序设计的工作效率、降低出错率,本文将基于目前飞行程序设计常用的工作平台auto CAD,建立障碍物评估模型并研究开发能自动生成最后进近航段保护区、能自动进行障碍物评估的辅助软件,使用某机场数据进行测试,经过测试验证,此辅助软件的计算过程正确、计算结果的精度符合要求。
文摘随着我国枢纽机场交通流量的增加,终端区飞行效率的优化问题日益凸显。该文首先建立随机的模拟飞机流,采用实际运行中通过各个航路点的飞机流比率、机型混合比率等统计数据,利用改进的单服务台混合制模型(M/M/1/K),对基于性能导航(Performance Based NavigationPBN)飞行程序与传统飞行程序的终端区飞行效率进行对比。结果显示,基于性能导航飞行程序的终端区飞行效率明显高于传统进场程序,改进的单服务台混合制模型为研究终端区飞行效率提供了有效的方法。
