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Acta Armamentarii ›› 2014, Vol. 35 ›› Issue (6): 927-934.doi: 10.3969/j.issn.1000-1093.2014.06.026

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Design and Response Characteristics Analysis of a Fast-response Sensor for Temperature and Heat Flux Measurement

YANG Qing-tao1, BAI Han-chen1, ZHANG Tao2, YANG Juan2, WANG Hui2   

  1. (1.Science and Technology on Scramjet Laboratory, Hypervelocity Aerodynamics Institute, China Aerodynamics Research andDevelopment Center, Mianyang 621000, Sichuan, China;2.Hypervelocity Aerodynamics Institute,China Aerodynamics Research and Development Center, Mianyang 621000, Sichuan, China)
  • Received:2013-08-04 Revised:2013-08-04 Online:2014-07-24
  • Contact: YANG Qing-tao E-mail:yqt06@mails.tsinghua.edu.cn

Abstract: A fast-response thermal resistance type heat flux sensor is designed to measure wall surface temperature and heat flux simultaneously in hypersonic vehicle long-time ground test. The thermocouple junctions are formed at the interfaces among different metal layers, and the heat flux and surface temperature could be achieved using the measured temperatures at the interfaces. A FEA model is built to simulate the internal heat transfer and response characteristics of the sensor. The numerical results show that theoretical assumptions could be met after a short-time response. The surface temperature and heat flux could be achieved simultaneously by considering temperature difference term and energy storing term during data reduction, and the effect of surface temperature on heat flux could be more closely reflected compared to the steady data reduction method.

Key words: test technology of aerocraft, heat flux sensor, heat flux measurement, surface temperature measurement, finite element analysis, response characteristics

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