Infrared and Laser Engineering, Volume. 52, Issue 4, 20220621(2023)
Quantitative analysis of the uncertainty of infrared radiation signature of rocket exhaust plume caused by incoming flow
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Fig. 2. Comparison of infrared radiation intensity spectral of flare between calculation and reference results
Fig. 5. Spectral radiation intensity uncertainty band and uncertainty
Fig. 6. Main Sobol index of free stream parameters to spectral intensity: (a) velocity, (b) pressure, (c) temperature, and (d) angle of attack
Fig. 7. Sobol index of coupling effect of free stream parameters to spectral intensity
Fig. 8. Sobol index of free stream parameters to in-band spectral intensity: (a) 3-5 μm band, (b) 2.5-3.2 μm band, (c) 2.8-3.0 μm band, and (d) 4.35-4.65 μm band
Table 1. Parameters of free stream flow and nozzle exit [15]
View tableView in ArticleTable 1. Parameters of free stream flow and nozzle exit [15]
Parameter Free stream Nozzle U/m·s−1 545.5 2 960 P/Pa 12 112 68 850 T/K 216.7 2 230 H2 0.000 000 0.012 194 O2 0.233 154 0.000 028 H2O 0.000 000 0.272 437 H 0.000 000 0.000 127 OH 0.000 000 0.000 797 N2 0.766 388 0.000 000 CO 0.000 000 0.412 125 CO2 0.000 458 0.302 293
Table 2. Statistical properties of in-band radiance intensity
View tableView in ArticleTable 2. Statistical properties of in-band radiance intensity
Band Mean value/W·sr−1 Standard deviation/W·sr−1 Uncertainty 1 9.83×106 6.62×105 6.70% 2 1.05×107 6.77×105 6.50% 3 3.72×106 2.55×105 6.90% 4 3.85×106 3.50×105 9.10%
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Zhiru Xiao, Qinglin Niu, Zhenhua Wang, Shikui Dong. Quantitative analysis of the uncertainty of infrared radiation signature of rocket exhaust plume caused by incoming flow[J]. Infrared and Laser Engineering, 2023, 52(4): 20220621
Paper Information
Category: Infrared technology and application
Received: Aug. 31, 2022
Accepted: --
Published Online: Jul. 4, 2023
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