Thermal Simulation and Experiment on Cathode-heater Assembly of Space TWT

LI Xinwei; YU Shiji; SU Xiaobao; FANG Youwei; MENG Mingfeng; XING Yanrong; LIU Liuping

doi:10.11999/JEIT160035

Volume 38 Issue 11

Dec. 2016

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Article Navigation > Journal of Electronics & Information Technology > 2016 > 38(11): 2965-2971

LI Xinwei, YU Shiji, SU Xiaobao, FANG Youwei, MENG Mingfeng, XING Yanrong, LIU Liuping. Thermal Simulation and Experiment on Cathode-heater Assembly of Space TWT[J]. Journal of Electronics & Information Technology, 2016, 38(11): 2965-2971. doi: 10.11999/JEIT160035

Citation:

LI Xinwei, YU Shiji, SU Xiaobao, FANG Youwei, MENG Mingfeng, XING Yanrong, LIU Liuping. Thermal Simulation and Experiment on Cathode-heater Assembly of Space TWT[J]. Journal of Electronics & Information Technology, 2016, 38(11): 2965-2971. doi: 10.11999/JEIT160035

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Thermal Simulation and Experiment on Cathode-heater Assembly of Space TWT

doi: 10.11999/JEIT160035

Funds:

The National 863 Program of China (2013AA 8035040C)

Received Date: 2016-01-13
Rev Recd Date: 2016-06-15
Publish Date: 2016-11-19

Abstract

Abstract

As the core component of space traveling wave tubes, the cathode-heater assembly is required to be stable, reliable, long life and low power consumption. In this paper, an estimation method of thermal contact resistance is proposed, and the thermal characteristics of cathode-heater assembly structure are simulated. Meanwhile, thermal experiment is designed and undertaken, and the whole temperature distribution of cathode-heater assembly structure under a variety of heating power is obtained for the first time. Furthermore, the thermal boundary and excitation of cathode-heater assembly structure is modified, and the values of thermal contact resistances are obtained by interactive method. Finally, a high reliable thermal model of cathode-heater assembly structure is obtained. It is revealed that cathode temperature calculating accuracy is within 5%, and the calculating error of whole structure is less than72 C.
- Cathode-heater assembly,
- Thermal model,
- Thermal experiment,
- Thermal contact resistance

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References(34)

References

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