Thrust Performance and Cathode Temperature Evaluation of MW Class Quasi-Steady MPD Thruster

2016 ◽  
Author(s):  
Yuya Oshio ◽  
Satoshi Tonooka ◽  
Ikkoh Funaki
Keyword(s):  
Cathode Temperature ◽  
Thrust Performance

scholarly journals Thrust Performance of Rotary-Valved Four-Cylinder Pulse Detonation Rocket Engine

2015 ◽  
Vol 58 (4) ◽  
pp. 193-203 ◽  
Author(s):  
Ken MATSUOKA ◽  
Ryuki SAKAMOTO ◽  
Tomohito MOROZUMI ◽  
Jiro KASAHARA ◽  
Akiko MATSUO ◽  
...  
Keyword(s):  
Rocket Engine ◽  
Pulse Detonation ◽  
Pulse Detonation Rocket Engine ◽  
Thrust Performance

Effect of airframe geometry on thrust performance of aerospace plane

2000 ◽  
Author(s):  
Masatoshi Kodera ◽  
Takeshi Kanda ◽  
Kouichiro Tani
Keyword(s):  
Aerospace Plane ◽  
Thrust Performance

A Study on Thrust Performance of Counter-Rotating Biomimetic Propeller System for a Manned Drone

2021 ◽  
Vol 24 (1) ◽  
pp. 41-46
Author(s):  
Soo-Jung Kim ◽  
Tae-Young Yeom ◽  
Seungbae Lee
Keyword(s):  
Thrust Performance

scholarly journals Effects of Nozzle Geometries on Thrust Performance Improvement of Micro-Multi-Nozzle-Array Thrusters

2009 ◽  
Vol 7 (ists26) ◽  
pp. Pb_77-Pb_82
Author(s):  
Fujimi SAWADA ◽  
Atsushi KOSHIYAMA ◽  
Shuji HAGIWARA ◽  
Hideyuki HORISAWA ◽  
Ikkoh FUNAKI
Keyword(s):  
Performance Improvement ◽  
Nozzle Geometries ◽  
Thrust Performance

A Novel SOFC Thermal Management Strategy of SOFC-GT Hybrid System With Anode and Cathode Control Loops

2020 ◽  
Author(s):  
Jinwei Chen ◽  
Yuanfu Li ◽  
Huisheng Zhang ◽  
Zhenhua Lu
Keyword(s):  
Thermal Management ◽  
Temperature Control ◽  
Management System ◽  
Management Strategy ◽  
Inlet Temperature ◽  
Control Performance ◽  
Control Loop ◽  
Control Loops ◽  
Thermal Management System ◽  
Cathode Temperature

Abstract The SOFC performance and lifetime highly depend on the operation condition, especially the SOFC operation temperature. The temperature fluctuation causes thermal stress in electrodes and electrolyte ceramics. On the other hand, it also needs to maintain a sufficiently high temperature to enable the efficient transport of oxygen ions across the electrolyte. Therefore, it is necessary to design an effective SOFC temperature management system to guarantee safe and efficient operation. In this paper, a two-side temperature control method is proposed to avoid the temperature difference between anode and cathode. Therefore, the SOFC thermal management system includes two control loops. The anode inlet temperature and cathode inlet temperature are controlled by blowers adjusting the recirculated flow rate. In addition, the control performance of the proposed SOFC thermal management system is compared with one-side temperature control systems. The results show that both anode control loop and cathode control loop are essential to get a better control performance. The SOFC would operate with less efficiency with only anode temperature control. On the other hand, the safety problem would occur with only cathode temperature control. The temperature gradient would be more than the upper limit at a part load condition. Therefore, the SOFC thermal management strategy with anode and cathode temperature control loops is feasible for the SOFC-GT system.

scholarly journals Issues in Cathode Performance: Part 1 - Tip shape and Crystal Orientation

1994 ◽  
Vol 2 (7) ◽  
pp. 13-15
Author(s):  
Locke Christman
Keyword(s):  
Crystal Orientation ◽  
Production Control ◽  
Beam Current ◽  
Materials Selection ◽  
Tungsten Filament ◽  
Material Loss ◽  
High Brightness ◽  
The Third ◽  
Two Factors ◽  
Cathode Temperature

LaB6 (and CeB6) cathodes are widely used as high-brightness cathodes in a variety of electron beam applications. These cathodes provide about 10 times the brightness and about 100 times the service life of a tungsten filament. However, to fully realize the improved brightness and lifetime of the LaB6 (CeB6) cathode, it must be designed and manufactured specifically for the application.This article covers tip shape and crystal orientation. Future articles will deal with materials selection, preparation, purity, composition, and cathode operation.The design of the LaB6 cathode tip is critical for maximum lifetime and optimum performance. The cathode must also provide the appropriate source size, beam current, and beam brightness for the application.The lifetime of the LaB6 cathode is limited by three basic factors: cathode temperature, vacuum pressure, and tip shape. The first two factors are critical and depend on proper user operation. Poor vacuum and excessive temperatures accelerate LaB6 material loss, which decreases the cathode lifetime. The third factor, tip shape, is also critical, and careful production control ensures that the tip shape is optimized.

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