碩士 / 國立中央大學 / 機械工程研究所 / 97 / Sounding Rocket VIII Mission (SR 8) is a sounding plan developed by Chong-Shan Institute of Science and Technology, the object is to continue the development of Sounding Rocket VI Mission (SR 6). The purpose of this paper is to analyze the flow field and characteristic of aerothermodynamics of the reentry capsule of SR 8, and discuss geometrical effects between SR 8 and SR 6. The range of height in simulation is 14,000~36,600 m, Mach numbers are from 0.5 to 6, and Knudsen numbers all less than 0.01. The FLUENT software is to be the analysis tool. To verify the numerical model, this work will simulate MESUR capsule, spherical capsule and capsule for SR 6.
Through a series of verification and comparison, the accuracy of numerical model in this work has been established. Simulation predicts that the drag coefficient increase when shape of capsule for SR 6 enlarge proportionally to SR 8. As SR8 reaches to Mach number 4 and attack angle is 180o, there is maximum pressure of 35.32 kPa occurs at the stagnation point; When Mach number further increases to 6 at attack angle of 180o, surface temperature increases upto 2,700 K, in addition the heat transfer rate appears near the shoulder region with a value of 5 kW/m2. The geometry effect is mild on the surface pressure, surface temperature and heat transfer rate of the reentry capsule. The present simulation results can provide a valuable design guide on the structural strength and thermal protection of SR8 reentry capsule.
| Identifer | oai:union.ndltd.org:TW/097NCU05489041 |
| Date | January 2009 |
| Creators | Jian-lin Liou, 劉建林 |
| Contributors | Jiunn-chi Wu, 吳俊諆 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 89 |
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