Infrared and Laser Engineering, Volume. 52, Issue 5, 20220671(2023)
Influence of different altitudes on deviation of aero-optics imaging of 0°-15° angle of attack
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Fig. 1. Flowchart of numerical simulation of computational fluid dynamics
Fig. 3. Three-dimensional relative motion relationship between the missile and the target
Fig. 4. Average flow field density distribution in the head of the vehicle at different altitudes (Sample 1)
Fig. 5. Average flow field density distribution in the head of the vehicle at different altitudes (Sample 2)
Fig. 6. Refractive index distributions of backward ray tracing at different altitudes (Sample 3)
Table 1. Distribution of pressure, temperature, and density with altitudes
View tableView in ArticleTable 1. Distribution of pressure, temperature, and density with altitudes
${{Z/\rm km} }$ ${{p/\rm Pa} }$ ${{T/\rm K} }$ $\rho /{\rm{kg} }\cdot{ {\rm{m} }^{-3}}$ 0 1.01325×105 288.150 1.2250 5 5.4048×104 255.676 7.3643×10−1 10 2.6499×104 223.252 4.1351×10−1 15 1.2111×104 216.650 1.9476×10−1 20 5.5293×103 216.650 8.8910×10−2 25 2.5492×103 221.552 4.0084×10−2
Table 2. Range of flight parameters calculated by simulation
View tableView in ArticleTable 2. Range of flight parameters calculated by simulation
Flight parameters Range Interval Altitude 0-25/km 5 Mach number 0.5-3 0.5 AOA 0-15/(°) 1 LOSR angle/(°) 5 LOS angle/(°) 35
Table 3. Flight condition
View tableView in ArticleTable 3. Flight condition
Sample Altitude/ km Mach number/Ma AOA/ (°) LOSR angle/(°) LOS angle/(°) 1 0-25 1.5 5 5 35 2 10 3 2 0 4 1.5 0-15 5 2 6 3
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Liang Xu, Luyang Wang, Ziming Wan, Shiwei Zhao, Liye Zhou, Tao Wang. Influence of different altitudes on deviation of aero-optics imaging of 0°-15° angle of attack[J]. Infrared and Laser Engineering, 2023, 52(5): 20220671
Paper Information
Category: Photoelectric measurement
Received: Sep. 15, 2022
Accepted: --
Published Online: Jul. 4, 2023
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