Journal
MEASUREMENT
Volume 95, Issue -, Pages 239-245Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.measurement.2016.10.033
Keywords
True temperature; Multispectral pyrometer; Plume; Optical fiber
Funding
- National Key Scientific Instruments and Equipment Development Special Fund of China [2013YQ470767]
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This paper describes the development of a novel multi-target multispectral pyrometer to remotely measure the true temperature of the plume of a solid fuel rocket engine in a harsh environment ground test. Using an optical fiber transmission technique, the core part of the instrument can be located 100 m away from the test site, so the influence of the harsh environment can be reduced and the instrument reliability improved. Optics are separated from prisms to accurately locate targets. Based on preamplifier circuits and parallelly adjacent pixels of the photodiode detectors, the measurement lower limit can reach 900 degrees C. The pyrometer is validated against experimental data from field measurements of a solid fuel rocket motor plume. The results demonstrate that the true temperature of the solid fuel rocket engine plume can be acceptably measured with the proposed pyrometer. (C) 2016 Elsevier Ltd. All rights reserved.
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