基于任务的软件配置管理模型的研究

介绍了传统配置管理模型的特点,针对其管理分散、难于在数据以及数据版本间建立关联等问题,对基于任务的软件配置管理模型进行了深入研究.模型在传统的配置管理模型中增加任务层,以功能要求为目标驱动,创建任务结点,通过任务的完成建立起上层目标与所有相关的配置项及配置项版本的关联,从而实现了目标与基本管理单元的自动追踪.     

支线运输机概念设计的多目标优化方法

研究支线运输机概念设计的多目标优化问题，在飞行任务确定的约束条件下，以最大起飞重量、燃油重量、升阻比、航程为目标，给出了多目标优化设计的数学模型、优化方法和计算软件。基于MATLAB软件，利用了MATLAB的开放式的可扩展环境开发了用户优化工具箱，扩展了MATLAB优化工具箱的功能，适用于不同需要。     

基于Kriging代理模型的运输机机翼多学科优化设计

在传统的飞机设计中,并未在初步设计阶段充分考虑气动弹性问题,难以得到最优设计。在这样的背景下,本文以运输机机翼为研究目标,发展初步设计阶段的机翼气动/结构优化设计方法。采用基于Kriging代理模型的优化方法,在巡航状态下对运输机机翼进行了单点优化设计。气动学科采用全速势方程,结构学科采用Ansys有限元分析,以升阻比和结构重量为目标进行优化设计,初步验证了本文方法的有效性。     

面向任务需求的模块化无人机配置方法

为了实现成本约束下面向任务需求的模块化无人机（UAVs）高效配置，基于无人机需求集和模块备选元素集，构建了任务需求与模块备选元素之间的关联矩阵；以无人机总体成本为约束条件，建立了需求满意度评价模型，引入了改进粒子群算法以获得无人机专用模块的最优配置方案，并通过算例与其他2种优化算法对比，验证了本文优化算法的有效性，进而提出了一种面向模块化无人机的配置方法。以某任务场景为例，在预定成本约束下构建了3型无人机的模块配置方案，并与文献中的单兵无人机参数配置进行对比，验证了配置方案的合理性。结合不同配置方案的成本计算结果表明，提出的模块化无人机配置方法能够实现无人机性能、成本与多种任务用途需求的协同匹配。在此基础之上，开展了模块化无人机多个配置方案单体成本、面向任务运用成本的对比分析，探讨了无人机配置参数对其单机及集群运用成本的影响规律，间接验证了本文算法对无人机单机及集群运用成本控制的支撑作用。     

飞机战伤抢修力量配置中的运筹学研究

首先运用排队论建立抢修分队数量预测模型即M/M/C/m/m排队模型,然后运用非平衡任务指派模型理论对抢修分队中的每位人员进行任务指派,并运用改进的匈牙利算法对目标函数加以求解,得出对战伤抢修人员优化配置的方法。     

载人航天飞行任务USB测控网优化配置解决方案

以我国载人航天飞行任务为背景,针对历次任务中USB测控网使用上出现的测站任务准备时间过长、与其他任务测站使用相冲突、测站使用效率不高等问题,在统计和分析实战任务数据的基础上,给出了一个载人航天飞行任务USB测控网优化配置的可行性方案,并提出了任务中选择测站的原则和测站配置确定流程,以期能够在今后的任务中更为合理地分配有限的USB测控网资源,提高其使用效率。     

设备监控系统远程控制时效性分析与对策

卫星地面站设备监控系统的控制具有时效性,主要表现在卫星地面站设备配置用时较长,时效性不高,在任务准备中占时比例大,制约了卫星系统的应用效率.针对该问题,分析了影响制约设备监控系统控制效能的相关因素,有针对性地提出了应对措施及对策,如细化设备控制脚本分类,取消命令之间的延时冗余,改善响应机制,采用并串行混合控制,预先优化宏命令解析等.经过检验,这些方法是有效可行的,有利于提高设备控制效能.     

基于动态空域配置的航路调整问题研究

动态空域配置旨在通过对各类型空域功能块的设计、构架、配置和使用,实现空域的动态配置功能,使管制空域灵活地匹配空中交通实际变化的需求。在此概念下建立了以最小运营成本为目标的航路调整规划模型,在模型中考虑某些航路段可以动态地开关-闭合,引入动态航路的开放成本和使用成本,以最短开放时间、最大管制负荷和航路复杂度、安全性为约束条件,采取改进的遗传算法进行求解,验证了模型的正确性和可行性。计算结果表明:用模型制定的优化策略,充分利用了空域资源,减少了延误损失,总的航班运营成本减少了15%。     

基于射击次数的编队防空队形优化配置

为解决舰艇编队协同防空中抗击多方向来袭目标流的队形部署优化问题,提出了以编队对来袭目标流的综合射击次数为目标函数的优化方法。将编队总射击次数分解为零航路捷径和非零航路捷径下的射击次数之和,利用射击次数与、杀伤区纵深、队形配置向量之间的约束关系,给出了计算方法。以一字队形为例,建立了队形部署优化模型。     

基于改进非支配排序遗传算法 的维修资源优化配置

针对在武器装备维修保障过程中出现的资源短缺、资源冲突等问题,构建了多目标的维修资源优化配置模型,并且基于加权思想将多目标转化为单目标以方便求解。针对遗传算法求解多目标优化问题存在的解空间过大、收敛速度慢、计算效率低等问题,提出了基于约束的改进非支配排序遗传算法对资源优化配置模型进行求解。实例分析结果验证了模型及算法的可行性和有效性。     

运输机空投货物建模与任务性能影响因素研究

针对当前运输机空投货物模型可拓展性不强的问题,提出了分离体的建模方法。在无需分析货物与飞机整体质心变化的情况下,分别以货物和飞机为对象进行受力分析,推导了货物与飞机之间的相互作用力,建立了更加贴近实际的运输机单件货物空投和连续空投的动力学模型。最后,通过数值仿真,分析了飞行速度和牵引伞牵引比对空投任务性能的影响。结果表明,飞行速度和牵引比越大,飞机在货物干扰作用下的状态变化量越小。     

A multi-agent based intelligent configuration method for aircraft fleet maintenance personnel

A multi-agent based fleet maintenance personnel configuration method is proposed to solve the mission oriented aircraft fleet maintenance personnel configuration problem. The mainte- nance process of an aircraft fleet is analyzed first. In the process each aircraft contains multiple parts, and different parts are repaired by personnel with different majors and levels. The factors and their relationship involved in the process of maintenance are analyzed and discussed. Then the whole maintenance process is described as a 3-layer multi-agent system （MAS） model. A com- munication and reasoning strategy among the agents is put forward. A fleet maintenance personnel configuration algorithm is proposed based on contract net protocol （CNP）. Finally, a fleet of 10 aircraft is studied for verification purposes. A mission type with 3 waves of continuous dispatch is imaged. Compared with the traditional methods that can just provide configuration results, the proposed method can provide optimal maintenance strategies as well.     

航母舰载机装备体系及指标论证方法

针对航母舰载机装备体系及指标论证的强体系和强舰载约束特征,以及多机种一体化保障要求高等特点,提出了基于模糊关系变换理论的体系论证方法,建立各型舰载机装备需求与任务需求之间的关系,结合航母编队作战使用特点以及航母甲板/机库空间尺寸约束进行迭代优化,构建舰载机体系结构和典型配置方案。同时,提出了基于舰载机作业流程仿真和舰载约束条件下的指标论证与优化方法,凸显编队体系作战、舰机适配性、海洋环境适应等特殊约束要素,形成系统科学的舰载机战术技术指标体系。在此基础上,构建了面向专家群决策的论证支持系统,并介绍了该系统的基本框架和运用流程。     

翼身融合飞机的空气动力学研究进展

翼身融合飞机(Blended Wing Body Aircraft-BWB Aircraft)是一种新型高升阻比无尾布局的大型运输机,其气动特性的研究是BWB布局飞机克服众多技术难题的基础。文章首先简述了BWB布局的研究历程,给出巨型BWB布局飞机的总体几何特征参数和基本性能,并简述风洞和自由飞试验情况;接着介绍BWB研究中的多学科优化平台,着重讨论气动优化技术,它是解决BWB布局气动问题的基础手段之一;然后综述BWB布局研究的热点领域:气动特性研究、气动弹性研究和发动机/机体一体化设计研究;最后提出BWB布局发展趋势的若干方面。     

Optimization of fixed aviation support resource station configuration for aircraft carrier based on aircraft dispatch mission scheduling

Before the dispatch of the carrier-based aircraft, a series of pre-flight preparation operations need to be completed on the flight deck. Flight deck fixed aviation support resource station configuration has an important impact on operation efficiency and sortie rate. However, the resource station configuration is determined during the aircraft carrier design phase and is rarely modified as required, which may not be suitable for some pre-flight preparation missions. In order to solve the above defects, the joint optimization of flight deck resource station configuration and aircraft carrier pre-flight preparation scheduling is studied in this paper, which is formulated as a two-tier optimization decision-making framework. An improved variable neighborhood search algorithm with four original neighborhood structures is presented. Dispatch mission experiment and algorithm performance comparison experiment are carried out in the computational experiment section. The correlation between the pre-flight preparation time (makespan) and flight deck cabin occupancy percentage is given, and advantages of the proposed algorithm in solving the mathematical model are verified.     

大型运输机机翼气动外形设计研究

以大型运输机机翼为研究对象,针对其机翼高低速气动外形设计目标,采用改进的Takanashi正反迭代、余量修正方法,进行超临界翼型的大型运输机机翼气动外形反设计.采用优化方法进行三维机翼低速增升装置的优化设计,通过将气动外形优化设计方法与反设计方法相结合以及分布式并行计算等手段来提高设计效率.结果表明,该设计方法是合理可行的.     

翼身融合布局飞机机体-发动机气动干扰效应

翼身融合（BWB）布局飞机是一种相对较新的飞行器概念,具有商业运输飞机的潜在用途。研究表明,翼身融合布局客机可获得比常规布局客机更好的性能。但是,由于各方面限制,BWB飞机不宜使用传统的机翼安装或机身安装的发动机布局,发动机背部安装成为首选布局。然而,背部安装发动机容易产生激波、分离、进气畸变等空气动力干扰问题,发动机与机身一体化的气动设计已成为BWB飞机发展的关键技术。针对BWB布局飞机的机体和发动机之间的气动干扰进行了数值研究,结果表明,背部安装发动机对BWB布局飞机的全机气动特性和发动机本身的推力性能都会产生较为明显的影响。     

民用飞机构型差异管理分析

在民用飞机研制及后续的交付运营过程中,构型差异是无法规避的客观存在,这种构型差异包括单机构型状态与型号设计之间的差异、单机设计状态与设计要求之间的差异,以及制造状态与设计要求之间的差异。准确记录这些差异,评估差异的影响,提供有效证据,以明确差异的可接受程度,确定限制和相关对策,是飞机研制过程的关键问题和难点问题。以研制阶段的试验试飞机为例,对飞机设计构型差异和制造构型差异产生的过程进行分析,提出了对构型差异管理的改进建议。     

An innovative approach for integrated airline network and aircraft family optimization

The determination of optimal aerial transport networks and their associated flight frequencies is crucial for the strategic planning of airlines, as well as for carrying out market research, to establish target markets, and for aircraft and crew rostering. In addition, optimum airplane types for the selected networks are crucial to improve revenue and to provide reduced operating costs. The present study proposes an innovative approach to determine the optimal aerial transport network simultaneously with the determination of the optimum fleet for that network, composed of three types of airplanes (network and vehicle integrated design). The network profit is maximized. The passenger’s demands between the airports are determined via a gravitational model. An embedded linear programming solution is responsible for obtaining potential optimal network configurations. The optimum fleet combination is determined from a database of candidate aircraft designs via genetic algorithm. A truly realistic airplane representation is made possible thanks to accurate surrogate models for engine and aerodynamics is adopted. An accurate engine deck encompassing a compression map and an innovative engine weight calculation besides an aerodynamical artificial neural network module enable a high degree of accuracy for the mission analysis. The proposed methodology is applied to obtain the optimum network comprised of twenty main Brazilian airports and corresponding fleet.     

Process of establishing design requirements and selecting alternative configurations for conceptual design of a VLA

In this study, a process for establishing design requirements and selecting alternative con-figurations for the conceptual phase of aircraft design has been proposed. The proposed process uses system-engineering-based requirement-analysis techniques such as objective tree, analytic hier-archy process, and quality function deployment to establish logical and quantitative standards. Moreover, in order to perform a logical selection of alternative aircraft configurations, it uses advanced decision-making methods such as morphological matrix and technique for order prefer-ence by similarity to the ideal solution. In addition, a preliminary sizing tool has been developed to check the feasibility of the established performance requirements and to evaluate the flight perfor-mance of the selected configurations. The present process has been applied for a two-seater very light aircraft (VLA), resulting in a set of tentative design requirements and two families of VLA configurations: a high-wing configuration and a low-wing configuration. The resulting set of design requirements consists of three categories: customer requirements, certification requirements, and performance requirements. The performance requirements include two mission requirements for the flight range and the endurance by reflecting the customer requirements. The flight performances of the two configuration families were evaluated using the sizing tool developed and the low-wing configuration with conventional tails was selected as the best baseline configuration for the VLA.