飞机起落安全的大敌—下击暴流

本文根据目前所掌握的资料,对下击暴流的基本特征、形成机理、下击暴流对飞行安全的影响及防范措施作了简要的归纳介绍,以利于飞行和气象人员保障飞行安全.     

高速开关阀在起落架半主动控制中的应用研究(英文)

To select or develop an appropriate actuator is one of the key and difficult issues in the study of semi-active controlled landing gear. Performance of the actuator may directly affect the effectiveness of semi-active control. In this article, parallel high-speed solenoid valves are chosen to be the actuators for the semi-active controlled landing gear and being studied. A nonlinear high-speed solenoid valve model is developed with the consideration of magnetic saturation characteristics and verified by test. According to the design rule of keeping the peak load as small as possible while absorbing the specified shock energy, a fuzzy PD control rule is designed. By the rule controller parameters can be self-regulated. The simulation results indicate that the semi-active control based on high-speed solenoid valve can effectively improve the control performance and reduce impact load during landing.     

基于直觉模糊推理的起落航线飞行安全评估

为了解决军航起落航线的飞行安全评估问题，提出一种基于直觉模糊推理的起落航线飞行安全评估方法。首先，对起落航线的飞行特点进行介绍，选取评估指标。接着，利用指挥员经验和模糊推理工具建立推理规则，设计推理模型。最后，通过实例验证和对比分析验证该方法的合理性和有效性，可为指挥员的飞行指挥调配决策提供依据。