• 其他栏目

    陆永华

    • 教授 博士生导师
    • 招生学科专业:
      机械工程 -- 【招收博士、硕士研究生】 -- 机电学院
      航空宇航科学与技术 -- 【招收硕士研究生】 -- 机电学院
      机械 -- 【招收博士、硕士研究生】 -- 机电学院
    • 主要任职:全系发展、学科建设、系管理工作
    • 毕业院校:南京航空航天大学
    • 学历:南京航空航天大学
    • 学位:工学博士学位
    • 所在单位:机电学院
    • 办公地点:17-525
    • 联系方式:nuaa_lyh@nuaa.edu.cn
    • 电子邮箱:

    访问量:

    开通时间:..

    最后更新时间:..

    The thrust measurement system research for combined nozzle in small space

    点击次数:

    所属单位:机电学院

    发表刊物:Trans Inst Meas Control

    摘要:For measuring the thrust of combined nozzles in satellite thruster with a small space, the test method that the nozzle directly sprays on the load baffle is employed in this paper. The key problem is how to design the positions of 10 load baffles and how to construct the measurement system. A set of complete and automatic nozzle thrust measurement system is designed and built, and the influence of the load baffle applied on the flow field of nozzles is analyzed using the software FLUENT. Furthermore, the load surface locations of the sensors for the different types of nozzles are analyzed. We draw the conclusion that the load baffle position should range from 4–8 mm for the I-type nozzle and range in 6–12 mm for II-type and III-type nozzle. The correction coefficients of the thrust forces for all channels of the measurement system are determined in the calibration experiment. The uncertainty of measurement system is estimated and the error source of the measurement system is traced. We found that the systematic uncertainty is mainly contributed by the A-type uncertainty which is related with the nozzle dimension and its inner structure. The B-type uncertainty of system is contributed by the force sensor. © The Author(s) 2018.

    ISSN号:0142-3312

    是否译文:

    发表时间:2019-02-01

    合写作者:Li, Jing,张翔,陈黎阳

    通讯作者:陆永华