• Low-diffusion preconditioning scheme for numerical simulation of low-speed flows past airfoil

    Abstract:The preconditioning technique can address the stiffness of a low Mach number flow, while it....

  • 针对交叉流的组合冲中突解脱策略

    摘要:航路网络交叉处高密度交通形成的冲突是诱发管制员工作负荷的主要因素,合理的冲突解脱策略可以降低对保护空域的需求.针对典型2向交叉流结构,在分析横向侧移....

  • Novel algorithm for geomagnetic navigation

    Abstract:To solve the highly nonlinear and non-Gaussian recursive state estimation problem in geomag....

  • 故障预测与健康管理(PHM)技术的现状与发展

    摘要:结合故障预测与健康管理(PHM)的技术发展过程,阐述了PHM的应用价值.论述了PHM技术系统级应用问题,提出了故障诊断与预测的人-机-环完整性认知模型,并依此对....

  • Experimental and numerical investigation on sound generation from airfoil-flow interaction

    Abstract:Aerodynamic noise due to interaction between incoming turbulence and rotating blades is an ....

  • Prediction of thermal fatigue life of a turbine nozzle guide vane

    Abstract:Thermal fatigue (TF) is one of the most important factors that influence turbines life. Thi....

  • 几种喉衬材料断裂韧性的比较

    摘要:测试了几种石墨、毡基C/C、多维编织C/C及石墨渗铜材料的断裂韧性,定性地比较了它们之间的抗断裂能力,并对材料的微观结构和断裂机理作了简要的分析.石墨渗....

  • FY-2B气象卫星红外通道发射前实验室定标与在轨辐射定标比较

    摘要:FY-2B是自旋稳定卫星,红外通道无法进行在轨星上绝对定标.FY-2B发射前的地面实验室定标方案参照了FY-2A在轨环境温度的变化情况,定标结果十分理想.在轨电子....

  • 先进树脂基复合材料的发展

    摘要:先进树脂基复合材料在过去三十年中已得到了飞速的发展.本文主要介绍了它们的发展现状及在航空工业的应用,讨论了先进树脂基复合材料的未来研究和发展方向以....

  • Spacecraft aerodynamics and trajectory simulation during aerobraking

    Abstract:This paper uses a direct simulation Monte Carlo(DSMC)approach to simulate rarefied aerodyna....

  • 航班地面等待模型中的延误成本分析与仿真

    摘要:研究了航班地面等待模型中延误成本的计算问题.建立了单元受限地面等待问题的数学模型,分析了航班延误成本的构成,给出了航班延误显性成本的计算方法,并将其....

  • 多机场网络系统流量分配策略

    摘要:为有效减少机场交通拥挤、降低航班延误,从系统角度研究战略层面的机场交通供需平衡问题.通过考虑单机场进场和离场间的相关性以及多机场联程航班间的关联性....

  • Computations of wall distances by solving a transport equation

    Abstract:Computations of wall distances still play a key role in modern turbulence modeling. Motivat....

  • GPS/VISNAV integrated relative navigation and attitude determination system for ultra-close spacecra

    Abstract:For the improvement of accuracy and better faulttolerant performance, a global position sys....

  • Wrinkle analysis of a space planar film reflect-array

    Abstract:The presence of wrinkles in a membrane is the main factor that induces surface errors on sp....

  • 考虑飞机姿态角时倾斜航空相机像移速度计算

    摘要:飞机的飞行和姿态变化使航空相机在拍照时产生像移,必须通过像移补偿来提高照相分辨率.为获得飞机姿态角变化时在倾斜航空相机像面上的像移速度大小,首先建....

  • Formation control for nonholonomic agents using passivity techniques

    Abstract:This paper studies the problem of the formation control for the multiple nonholonomic agent....

  • Deformation division of metal flow behavior during extrusion process of 7075 aluminum alloy

    Abstract:To reduce defects caused by non-homogeneous metal flow in conventional extrusion, a die wit....

  • 基于支持向量机的非线性系统故障诊断

    摘要:提出了联想度的概念,并由此设计出一种自组织模糊CMAC(SOFCMAC)及其学习算法,证明了SOFCMAC能以任意精度对非线性特性一致逼近.该网络具有学习速度快,逼近精....

  • 光电稳定跟踪装置的控制系统设计

    摘要:给出了一类光电稳定跟踪装置的框架伺服控制方案,重点研究了速率稳定环的设计过程,使用dSPACE半实物仿真系统进行了速率回路开环特性的模型辨识和高阶滞后超....