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Energies 2017, 10(3), 355; doi:10.3390/en10030355

Thermal Analysis of the Driving Component Based on the Thermal Network Method in a Lunar Drilling System and Experimental Verification

State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 15001, China
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Academic Editor: Chunhua Liu
Received: 13 February 2017 / Accepted: 9 March 2017 / Published: 13 March 2017
(This article belongs to the Section Energy Sources)
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Abstract

The main task of the third Chinese lunar exploration project is to obtain soil samples that are greater than two meters in length and to acquire bedding information from the surface of the moon. The driving component is the power output unit of the drilling system in the lander; it provides drilling power for core drilling tools. High temperatures can cause the sensors, permanent magnet, gears, and bearings to suffer irreversible damage. In this paper, a thermal analysis model for this driving component, based on the thermal network method (TNM) was established and the model was solved using the quasi-Newton method. A vacuum test platform was built and an experimental verification method (EVM) was applied to measure the surface temperature of the driving component. Then, the TNM was optimized, based on the principle of heat distribution. Through comparative analyses, the reasonableness of the TNM is validated. Finally, the static temperature field of the driving component was predicted and the “safe working times” of every mode are given. View Full-Text
Keywords: lunar sampling; rotary motor; planetary reducer; thermal analysis; thermal network method (TNM); experimental verification lunar sampling; rotary motor; planetary reducer; thermal analysis; thermal network method (TNM); experimental verification
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Tang, D.; Xiao, H.; Kong, F.; Deng, Z.; Jiang, S.; Quan, Q. Thermal Analysis of the Driving Component Based on the Thermal Network Method in a Lunar Drilling System and Experimental Verification. Energies 2017, 10, 355.

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