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梯度增强的Stochastic Co-Kriging模型建模及其在CFD非嵌入式不确定性量化中应用的研究进展（图）
梯度增强 Stochastic Co-Kriging 模型建模 CFD非嵌入式 不确定性量化
2019/10/16
作为一项极其复杂的系统工程，飞行器的研制总会受到制造误差、飞行状态等诸多不确定性因素的影响，如果这些不确定性因素在设计过程中被忽视，很可能会导致飞行器整体性能急剧变差，甚至造成致命性的灾难。因此，近年来飞行器的不确定性研究方法和手段在航空航天领域得到了广泛应用，NASA早在2002年就开始着手规划考虑不确定性因素影响的研究工作，AIAA和ASME每年都举办关于不确定性研究的专题研讨会。当前我国各型...
A NOVEL TWO-COMPONENT DECOMPOSITION FOR CO-POLAR CHANNELS OF GF-3 QUAD-POL DATA
GF-3 satellite, Model-based decomposition, Two-component decomposition, Co-polar data, PolSAR
2018/5/14
Polarimetric target decomposition theory is the most dynamic and exploratory research area in the field of PolSAR. But most methods of target decomposition are based on fully polarized data (quad pol)...
Building Cooperation for the Future of Civil Aviation: Innovation, Growth, and Technical Co-operation
Building Cooperation the Future of Civil Aviation: Innovation Growth, Technical Co-operation
2014/3/26
Following the increased concerns from ICAO Member States to better respond to ICAO audit policies, as well as to the challenges faced with a rapid air traffic growth, there is a need for technical coo...
以新型Co基合金Co-9Al-9W-2Ta-0.02B成分为基础,分别添加了原子分数为2%、4%、6%、9%的Mo元素替代W(分别称2Mo、4Mo、6Mo、9Mo合金,W+Mo的原子分数为9%,无Mo添加的称为0Mo合金),研究了Mo元素对合金相组成、显微组织形貌、维氏硬度和高低温压缩强度的影响。结果表明铸态合金由Co的固溶体γ相和Co3(Al, Me)金属间化合物γ' 相组成(其中Me为合金元素...
Electromagnetic behavior of radar absorbing materials based on Ca hexaferrite modified with Co-Ti ions and doped with La
Radar absorbing materials Electromagnetic characterization
2010/10/25
Radar Absorbing Materials (RAM) are compounds that absorb incidental electromagnetic radiation in tuned frequencies and dissipate it as heat. Its preparation involves the adequate processing of polyme...
Cool Rigidization of Inflatable Structures Using Thermally Plasticizing Co-Woven Fabrics
Artificial Satellite Large Satellite Antenna Inflatable Structure
2009/8/19
There is increasing demand for constructing large structures in space due to the continued increase in space utilization. Space inflatable structures make it possible to construct large space structur...