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Proceedings Paper

Feasibility of moiré deflectometry for measuring temperature and electron number density of rocket exhaust plume
Author(s): Yun-yun Chen; Yang Song; Zhen-hua Li; An-zhi He
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Paper Abstract

In this research, the feasibility of moiré deflectometry for diagnosing the temperature and the electron number density of rocket exhaust plume is studied. The dependence of the refractive index on the temperature, the pressure, the composition and the probe wavelength is established firstly. Based on which, the theoretical analysis and discussion indicate that it is impossible to achieve the measurement of the electron number density by both one- and two-wavelength moiré deflectometry in the given temperature, pressure and probe wavelength regions. Yet, it may be feasible to measure the temperature distribution of rocket exhaust plume by moiré deflectometry, if the imprecision of the temperature reconstruction is permitted by the practical measuring requirement.

Paper Details

Date Published: 5 November 2010
PDF: 10 pages
Proc. SPIE 7848, Holography, Diffractive Optics, and Applications IV, 78480B (5 November 2010); doi: 10.1117/12.869955
Show Author Affiliations
Yun-yun Chen, Nanjing Univ. of Science and Technology (China)
Yang Song, Nanjing Univ. of Science and Technology (China)
Zhen-hua Li, Nanjing Univ. of Science and Technology (China)
An-zhi He, Nanjing Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 7848:
Holography, Diffractive Optics, and Applications IV
Yunlong Sheng; Chongxiu Yu; Linsen Chen, Editor(s)

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