Hall Thruster Channel Wall Erosion Rate Measurement Method Using Multilayer Coating Chip

2010 ◽  
Author(s):  
Shinatora Cho ◽  
Shigeru Yokota ◽  
Kentaro Hara ◽  
Daisuke Takahashi ◽  
Yoshihiro Arakawa ◽  
...  
Keyword(s):  
Measurement Method ◽  
Erosion Rate ◽  
Channel Wall ◽  
Multilayer Coating ◽  
Hall Thruster ◽  
Rate Measurement

Multilayer Coating Method for Investigating Channel-Wall Erosion in a Hall Thruster

2013 ◽  
Vol 29 (1) ◽  
pp. 278-282 ◽  
Author(s):  
Shinatora Cho ◽  
Shigeru Yokota ◽  
Kimiya Komurasaki ◽  
Yoshihiro Arakawa
Keyword(s):  
Channel Wall ◽  
Multilayer Coating ◽  
Hall Thruster ◽  
Coating Method

A 200-W permanent magnet Hall thruster discharge with graphite channel wall

2018 ◽  
Vol 382 (42-43) ◽  
pp. 3079-3082 ◽  
Author(s):  
Yongjie Ding ◽  
Hong Li ◽  
Hezhi Sun ◽  
Liqiu Wei ◽  
Boyang Jia ◽  
...  
Keyword(s):  
Permanent Magnet ◽  
Channel Wall ◽  
Hall Thruster

Influence of the Magnetic Field Topology on Hall Thruster Discharge Channel Wall Erosion

2012 ◽  
Vol 22 (3) ◽  
pp. 4904105-4904105 ◽  
Author(s):  
Chang Liu ◽  
Zuo Gu ◽  
Kan Xie ◽  
Yunkui Sun ◽  
Haibin Tang
Keyword(s):  
Magnetic Field ◽  
Channel Wall ◽  
Discharge Channel ◽  
Hall Thruster ◽  
Magnetic Field Topology ◽  
The Magnetic Field

Research on a novel flow rate inferential measurement method and its application in hydraulic elevators

2016 ◽  
Vol 231 (2) ◽  
pp. 372-386 ◽  
Author(s):  
Bing Xu ◽  
Pengpeng Dong ◽  
Junhui Zhang ◽  
Jinjin Yao
Keyword(s):  
Mathematical Modeling ◽  
Flow Rate ◽  
Measurement Method ◽  
Sensitivity Analyses ◽  
Hydraulic Systems ◽  
Rate Measurement ◽  
Flow Rate Measurement ◽  
Test Rig ◽  
Flow Meters ◽  
Inferential Measurement

Measuring and controlling the flow rate is a widely concerned problem in engineering fields. The direct flow rate measurement employing conventional flow meters and the indirect flow rate measurement using speed/position transducers or other particular techniques would result in inevitable pressure drop in hydraulic circuits, more energy consumption for pumping fluid, and higher cost of hydraulic systems. This paper presents a novel flow rate inferential measurement method and its application in hydraulic elevators. Mathematical modeling of the proposed method is deduced. The key component of the hydraulic elevator circuit, a two-stage proportional flow rate valve, is verified by experiments as one of the contributions of this paper. Based on the mathematical modeling and the valve validation test, the feasibility and validity of the proposed method are verified by the experiments performed on a test rig which is designed to imitate work situations of a hydraulic elevator. Moreover, sensitivity analyses of the proposed flow rate inferential measurement method are carried out to find the ways how to improve the accuracy of the proposed method. It is believed that this method can be applied in various engineering devices.

Flow Rate Measurement Method and Apparatus of Thick Pastes

2012 ◽  
Vol 605-607 ◽  
pp. 945-950 ◽  
Author(s):  
Shuang Yu Zhang ◽  
Zhi Nan Wang ◽  
Xue Di Hao ◽  
Miao Wu
Keyword(s):  
Flow Rate ◽  
Electromagnetic Induction ◽  
Experimental Error ◽  
Measurement Method ◽  
Pipeline System ◽  
Rate Measurement ◽  
Flow Rate Measurement ◽  
Capacity Calculation ◽  
Selection For ◽  
Coal Slime

Research on the rheological characteristics and delivery resistance needs precise flow rate in pipes of thick pastes which is the basis of delivery capacity calculation and equipment selection for a pipeline system. However, the existing apparatuses are not suitable for flow rate measurement of the thick pastes, so it is necessary to design a kind of apparatus applicable to the above requirements. This paper by using an electromagnetic induction coil as a sensor, designs a kind of flow rate measurement apparatus of thick pastes. It describes the measurement method and its principle, and analyzes the error of this apparatus. A loop-pipe transportation test of coal slime was conducted, and it shows the relative test experimental error of this apparatus is less than 1%.

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