中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
机构
采集方式
内容类型
发表日期
学科主题
筛选

浏览/检索结果: 共9条,第1-9条 帮助

条数/页: 排序方式:
Numerical study on the aerothermodynamics of different heatshield configurations for Mars entry capsules 期刊论文  OAI收割
ACTA ASTRONAUTICA, 2019, 卷号: 157, 页码: 189-198
作者:  
Zhong K;  Yan C;  Chen SS;  Wang XY(王小永);  Ju SJ
  |  收藏  |  浏览/下载:34/0  |  提交时间:2019/05/29
Influence of the IMF Cone Angle on Invariant Latitudes of Polar Region Footprints of FACs in the Magnetotail: Cluster Observation 期刊论文  OAI收割
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 2018, 卷号: 123, 期号: 4, 页码: 2588-2597
作者:  
Cheng, Z. W.;  Shi, J. K.;  Zhang, J. C.;  Torkar, K.;  Kistler, L. M.
  |  收藏  |  浏览/下载:46/0  |  提交时间:2018/07/04
Aerodynamic force and moment measurement of 10° half-angle cone in JF12 shock tunnel 期刊论文  OAI收割
Chinese Journal of Aeronautics, 2017, 卷号: 30, 期号: 3, 页码: 983-987
作者:  
Liu YF(刘云峰);  Wang YP(汪运鹏);  Yuan CK(苑朝凯);  Luo ZT(罗长童);  Jiang ZL(姜宗林)
收藏  |  浏览/下载:54/0  |  提交时间:2017/08/22
Spray Characteristics of Biodiesel Fuel in Constant Volume Chamber using Multi-response Optimization Technique 期刊论文  OAI收割
2016
作者:  
Raghu, P. and Nallusamy, N.
收藏  |  浏览/下载:37/0  |  提交时间:2017/05/27
Experiments and modeling of discharge characteristics in water-mist sprays generated by pressure-swirl atomizers 期刊论文  OAI收割
JOURNAL OF THERMAL SCIENCE, 2012, 卷号: 21, 期号: 6, 页码: 539,548
Paolo E.Santangelo
收藏  |  浏览/下载:19/0  |  提交时间:2013/04/27
Three-sample rotation vector algorithm with angular rate input (EI CONFERENCE) 会议论文  OAI收割
2011 2nd International Conference on Mechanic Automation and Control Engineering, MACE 2011, July 15, 2011 - July 17, 2011, Inner Mongolia, China
作者:  
Zhang Y.
收藏  |  浏览/下载:25/0  |  提交时间:2013/03/25
In order to research the attitude algorithm with angular rate input under the conical motion  a optimal threesample rotation vector algorithm based on single-step Newton backward interpolation is proposed. Using the principle of limited rigid body rotation and the characteristic of angular rate input  three-sample rotation vector algorithm is derivated. To minimum attitude errors  three-sample rotation vector algorithm is optimized. Three angular rate extraction methods of singlestep entire sample recursion  multi-step entire sample and singlestep Newton backward interpolation are proposed. Under the condition of conical motion with semi-cone angle 3 and angular frequency 2rad/s  simulation is done. The simulation results show that single-step Newton backward interpolation is superior to the other two methods  and its maximum error peak is 0.01  error drift rate is 0.036/h. Experiments in three-axis flying turntable with the same parameters are carried out  and the results show that error drift rates of three-channels are less than those of traditional quaternion  which are 13.53%  12.08% and 23.68% lower respectively. It also verified that the new algorithm can perform a high accuracy under the conical motion. 2011 IEEE.  
Numerical study on the localized surface plasmon resonance of cone-shaped nanoparticles 期刊论文  OAI收割
JOURNAL OF MODERN OPTICS, 2011, 卷号: 58, 期号: 17, 页码: 1579-1584
作者:  
Ni, Zugao;  Ren, Hao;  Luo, Ji;  Yao, Jun
收藏  |  浏览/下载:24/0  |  提交时间:2015/09/21
Design of compound Fresnel-R lenses for new high-efficient photovoltaic concentrator (EI CONFERENCE) 会议论文  OAI收割
Nonimaging Optics: Efficient Design for Illumination and Solar Concentration VII, August 1, 2010 - August 4, 2010, San Diego, CA, United states
作者:  
Liu H.;  Liu H.;  Liu H.
收藏  |  浏览/下载:41/0  |  提交时间:2013/03/25
A new design of compound Fresnel-R concentrator is presented which is composed of two lenses: a primary lens (Fresnel lens) that works by total internal reflection at outer facets but refraction at inner facets  and a secondary lens that works by refraction. In contrast to previous Fresnel lens concentrator  this design increases the acceptance angle  improves the irradiance uniformity on the solar cell  and reduces the aspect ratio significantly. Another outstanding advantage of this concentrator is the fact that it mainly works by performing total internal reflection  reducing chromatic dependence as well as Fresnel losses. An optical efficiency more than 80% can be achieved. Moreover  in order to reduce the influence of manufacture accuracy and to increase the optical efficiency further  the central part of the bottom of the secondary lens which directly adhered to the solar cell is designed as a cone-shaped prism to collect the sunlight that doesn't reach the solar cell. 2010 SPIE.