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Chinese Academy of Sciences Institutional Repositories Grid
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Thermochemical non-equilibrium flow characteristics of high Mach number inlet in a wide operation range 期刊论文  OAI收割
CHINESE JOURNAL OF AERONAUTICS, 2023, 卷号: 36, 期号: 12, 页码: 164-184
作者:  
Dai, Chunliang;  Sun, Bo;  Yue LJ(岳连捷);  Zhou, Shengbing;  Zhuo, Changfei
  |  收藏  |  浏览/下载:9/0  |  提交时间:2024/02/19
Starting and running performance of a pulsating heat pipe with micro encapsulated phase change material suspension 期刊论文  OAI收割
APPLIED THERMAL ENGINEERING, 2022, 卷号: 212, 页码: 9
作者:  
Shi, Weixiu;  Chen, Hongdi;  Pan, Lisheng;  Wang, Qian;  Pan LS(潘利生)
  |  收藏  |  浏览/下载:45/0  |  提交时间:2022/07/18
Study on the azimuth bearing scheme of a large Alt-azimuth telescope (EI CONFERENCE) 会议论文  OAI收割
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, April 26, 2010 - April 29, 2010, Dalian, China
作者:  
Wang H.;  Dai S.;  Zhang J.;  Wang H.;  Zhang J.
收藏  |  浏览/下载:38/0  |  提交时间:2013/03/25
The azimuth bearing schemes in typical large Alt-azimuth telescopes  especially the 3.5-m APO telescope and the 4.1-m SOAR telescope were analyzed. A scheme of high-angular contacted thrust ball bearing integrated with a radial ball bearing was put forward. According to the Hertz contact theory  the corresponding parameters were designed for engineering application. The static performance parameters  within the range of 60 85 original contact angle were calculated. Compared with the traditional plane thrust ball bearing  the results shows that the high-angular (80) contact thrust ball bearing has more benefits at bearing strength and rigidity for large telescope. The 1500mm diameter prototyping bearing shows good performance  including the axial jitter is 0.009mm  the radial jitter is 0.006mm  the maximum starting torque without load is 30N·m  and the load capacity is more than 30t  which offers advanced technique path for the buildup of the high precision azimuth shafting and the whole telescope system. 2010 Copyright SPIE - The International Society for Optical Engineering.  
Disc varifocal mechanism to improve efficiency of scene matching navigation system (EI CONFERENCE) 会议论文  OAI收割
2009 2nd International Conference on Future Information Technology and Management Engineering, FITME 2009, December 13, 2009 - December 14, 2009, Sanya, China
作者:  
Zhang C.-L.
收藏  |  浏览/下载:19/0  |  提交时间:2013/03/25
In order to meet special requests of optical imaging sensor in scene matching navigation system  a disc varifocal mechanism is proposed for the flight vehicles of long flying time and range. Within small space occupied  it can obtain real images with various resolutions. Moreover  using plate traveling-wave Ultrasonic Motor as its driven motor can reduce energy loss  improve control precision and ensure image obtaining being real-time and stable. Disc varifocal mechanism driven by plate traveling-wave Ultrasonic Motor is high-response  and variation in load doesn't affect its performance parameter. Therefore  applying disc varifocal mechanism in scene matching navigation system  combing software and hardware  can obviously improve the accuracy  real-time and robust of scene matching navigation system. The experiment showed that when the weight of mechanism was 1.5kg  the shortest starting was 0.6ms  and the shortest shutoff was 0.5ms. 2009 IEEE.  
Effect of starting powder on screen-printed YSZ films used as electrolyte in SOFCs 期刊论文  OAI收割
Solid State Ionics, 2006, 卷号: 177, 期号: 3-4, 页码: 281-287
Y. H. Zhang; X. Q. Huang; Z. Lu; X. D. Ge; J. H. Xu; X. S. Xin; X. Q. Sha; W. H. Su
收藏  |  浏览/下载:19/0  |  提交时间:2012/04/14