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Proceedings Paper

Research on infrared radiation signatures of high-altitude plume based on DSMC method
Author(s): Xingdong Bao; Hongxia Mao; Jie Wu; Yanbing Dong
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Paper Abstract

Exhaust plume flow field have the characteristics of high temperature, high speed and multi-species flow. Exhaust plume infrared signal are important basis of diagnosing, detecting and identifying plume spectrum. This paper focuses on the infrared radiation characteristics of high-altitude plume. The plume flows exhausted from a micro-nozzle of a low-thrust engine at high-altitude have been simulated numerically through using a DSMC method. Both the properties of plume flow at high altitude and the non-equilibrium effect related to rarefied gases are analyzed. Results are given numerically in good agreement with high-altitude plume observations. With the fields of pressure, temperature and main components of the exhaust plume as input data, the line-by line method was used to calculate the 2~5μm infrared spectral radiation properties of the plume. Different flight conditions are considered to analyze the influence on the infrared radiation characteristics. Some interesting conclusion are finally achieved.

Paper Details

Date Published: 25 October 2016
PDF: 6 pages
Proc. SPIE 10157, Infrared Technology and Applications, and Robot Sensing and Advanced Control, 101570D (25 October 2016); doi: 10.1117/12.2244158
Show Author Affiliations
Xingdong Bao, Science and Technology on Optical Radiation Lab. (China)
Hongxia Mao, Science and Technology on Optical Radiation Lab. (China)
Jie Wu, Science and Technology on Optical Radiation Lab. (China)
Yanbing Dong, Science and Technology on Optical Radiation Lab. (China)


Published in SPIE Proceedings Vol. 10157:
Infrared Technology and Applications, and Robot Sensing and Advanced Control

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