人工智能在航空航天领域中的应用

本文从人工智能的概念出发,根据国内外文献,综述了人工智能技术在航空航天领域的应用。     

Corrosion resistance of carbon ion-implanted M50NiL aerospace bearing steel

The effect of carbon implantation on the corrosion behavior of M50NiL aerospace bearing steel through surface modification was investigated. X-ray photoelectron spectroscopy, Auger electron spectroscopy and X-ray diffraction were used to analyze the composition and structure of the carbon-implanted layer. The corrosion properties of the untreated and carbon ion-implanted samples were evaluated by potentiodynamic curves and electrochemical impedance spectroscopy, which were carried out in 3.5% NaCl solution. Ion implantation of carbon in the M50NiL bearing steel yielded a distinct decrease of the corrosion current densities and an obvious increase of the polarization resistance. The experimental results indicated that the content of chromium oxide in the passive film increased with carbon implantation and that the intergranular corrosion was suppressed in the carbon-implanted sample. Better corrosion protection was observed in the carbon ion implantation sample.     

应用于航天试验的模糊网络计划方法

航天试验的测试发射是一个复杂的系统工程，因而在测试发射工程的组织指挥及管理中使用经典ＰＥＲＴ网络计划技术，往往很难达到满意的效果。本文应用模糊集理论，提出了一种网络计划方法———模糊网络计划方法，并讨论了该方法在测试发射工程中的应用问题。     

武昌东湖水体污染的航空遥感分析

本文以彩红外航片为主要判释资料,采用航空摄影与地面同步测量的方法,对东湖水体污染状况进行分析。结果表明,凡是能造成水色差异的污染物质,都能在影像色彩和水体光谱亮度值上反应出来。污染物质的类型、浓度与其光谱亮度值具有某种相关关系。根据影像特征和光谱亮度值,结合水样分析和地面调查,可较快地确定水体类型,营养状态,稀释扩散方向。     

航天研究所事业部改革发展存在的问题及对策

十八大以来,中国航天研究所,正经历着知识经济、国家变革以及世界经济调整带来的三大变革,即合作发展、多元经营和纵向产业链延伸。本文主要针对航天研究所事业部改革发展现状和存在的主要问题行了分析,并提出改革发展的建议及策略     

新型高温高熵合金材料研究进展

 高熵合金是一类新型金属材料,对其研究目前已发展成为涉及材料、物理、化学、力学和计算科学等多学科交叉融合的前沿方向,尤其是近10年来出现的具有高强度、高硬度、高耐磨性、耐高温性、耐腐蚀性等性能特点的高温高熵合金,在推动高温防护领域的材料科学创新发展与工程化应用方面具有重要意义。综合阐述了高温高熵合金材料研究领域取得的一系列科技成果,包括高温高熵合金材料的定义、形成机理、材料体系设计和综合性能等;分析了高温高熵合金材料极端服役环境的复杂性、材料计算设计及其性能的相关性,总结提出高温高熵合金材料研究领域的十大科学问题,为高温高熵合金材料的未来发展提供参考。     

末制导炮弹惯性制导仿真及横向散布研究

末制导炮弹通过简易的惯性制导系统使弹丸沿直线飞行以达到增加射程的作用.通过研究末制导炮弹惯性制导系统的工作原理,应用MATLAB/Simulink中的Aerospace Blockset,建立了含俯仰和偏航通道的末制导炮弹惯性制导系统简化模型.分析了炮弹惯性制导系统的横向干扰因素及其带来的横向散布.仿真结果验证了模型的正确性,并给出了减少末制导炮弹横向散布的改进策略.     

智能卵石攻击高轨道卫星能力的分析

本文给出了评估智能卵石(Brilliant pebble)做为反卫星武器的能力的数学公式。对智能卵石攻击同步轨道卫星的想法进行了计算和分析。本文的计算说明了智能卵石也是具有攻击高轨道卫星能力的反卫星武器。     

高超声速头锥驻点发汗控制试验研究

本文简要叙述了发汗冷却控制概念。并在发汗冷却控制方程基本性质研究的基础上，针对电磁炮弹和其它型号的应用，进行了发汗冷却控制原理性试验研究。并着重叙述了水发汗的试验方案、控制方法等试验技术。应用发汗量函数级数形式，装入计算机代替方程求解。在电弧加热条件下，对驻点状态模型温度进行闭合回路控制的试验是成功的。     

Multidisciplinary design optimization approach and its application to aerospace engineering

The multidisciplinary design optimization（MDO）approach is very crucial for the conceptual design of the aircraft,and this is due to the complex interaction between different disciplines, especially for the hypersonic vehicle. In the hypersonic vehicle, the airframe and the engine are highly integrated. In the current survey, the research progress in the MDO approach has been reviewed comprehensively from four primary techniques, namely the design of experiments, the surrogate modeling, the optimization method and the MDO framework, and its application to the aerospace engineering has been summarized from its category as well. The concurrent subspace optimization approach is the most popular method in the aerospace engineering for its easy implementation, and following is the collaborative optimization approach. The multi-level optimization approach has attracted a growing attention due to its high efficiency. In conclusion, some promising research recommendations have been put forward, namely the combination of the low- and high-fidelity optimization approaches, the consideration of the uncertainty analysis and the MDO approach coupled with the data mining techniques.