1 November 2005 Evaluation of spectrometer performance for flight experiments in ballistic environment
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Proceedings Volume 5998, Sensors for Harsh Environments II; 599804 (2005) https://doi.org/10.1117/12.627005
Event: Optics East 2005, 2005, Boston, MA, United States
Abstract
CEA is interested in radiative transfer induced by hypersonic flow for the study of extern layer ablation phenomena. Material ablation during atmospheric re-entry generally depends on object shape, incidence angle, speed and atmospheric composition at actual altitude. To improve the knowledge of these aero-thermo-chemical phenomena, we use specific instrument inside representative flying object. For this, we must observe the emission of certain chemical components in the shock layer through spectrometric measurements in the visible range. In this paper, we present a characterisation of two commercial spectrometers of Ocean Optics and Avantes trademark. Some tests we made in vibration and acceleration were representative of the different phase of the life cycle of these instruments in a ballistic flight environment. Then, temperature and saturation effects are observed according to the photoelectrical performances of the spectrometer and a transfer function model is proposed. At last, spectrometers have shown they could withstand these harsh environments.
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Philippe Millier, Ronan Le Borne, David Durand, Vincent Plano, Catherine Canac, Laurent Segard, Renaud Monestier, "Evaluation of spectrometer performance for flight experiments in ballistic environment", Proc. SPIE 5998, Sensors for Harsh Environments II, 599804 (1 November 2005); doi: 10.1117/12.627005; https://doi.org/10.1117/12.627005
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