Electromagnetic scattering characteristics of a hypersonic vehicle with a microrough surface in the millimeter wave band
Source abstract
Abstract
The rough structure may affect the flow field and electromagnetic (EM) scattering characteristics of a hypersonic vehicle. In this study, the EM scattering characteristics of the hypersonic vehicle RAM C-II with a microrough surface were investigated in the millimeter wave band. We first simulated the flow field of a smooth RAM C-II vehicle and calculated the radar cross section (RCS) in the wideband using the physical optics method. The calculation results show that many factors contribute to the variation in the RCS; however, it is occasionally difficult to predict. We then used a one-dimensional Gaussian random rough surface to generate a RAM C-II with a microrough surface through a point-coordinate transformation and simulated its flow field. The electron density flow field of the rough surfaced aircraft fluctuates greatly on the wall. Finally, we calculated the RCS of RAM C-II with different values of roughness in the millimeter wave band. The change of surface structure can be reflected in millimeter waves, and the RCS is determined by both plasma and rough structure.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Electromagnetic Scattering and Analysis · Gas Dynamics and Kinetic Theory · Plasma Diagnostics and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Physics, Xidian University 1 , Xi’an 710071, China
China Aerodynamics Research and Development Center 2 , Mianyang 621000, China
Funding
National Natural Science Foundation of China · Foundation for Innovative Research Groups of the National Natural Science Foundation of China · National Key Laboratory Foundation of China · China Postdoctoral Science Foundation
References (27)
Show source-provided references
1. Progress in reentry communications10.1109/taes.1971.310328 ↗
2. Hypersonic vehicle telemetry blackout analysis10.2514/1.a32051 ↗
3. PO calculation for reduction in radar cross section of hypersonic targets using RAM10.1063/1.5030194 ↗
4. 2019
5. Numerical simulation of the thermal non-equilibrium flow-field characteristics of a hypersonic Apollo-like vehicle10.1088/1674-1056/ac6ed6 ↗
6. Numerical investigation of surface catalytic effect on the plasma sheath of a hypersonic re-entry capsule10.1063/5.0149660 ↗
7. Analyses of electromagnetic properties of a hypersonic object with plasma sheath10.1109/tap.2019.2891462 ↗
8. Excitation and power spectrum analysis of electromagnetic radiation for the plasma wake of reentry vehicles10.1088/2058-6272/aca7ad ↗
9. Analyzing the electromagnetic scattering characteristics of a hypersonic vehicle based on the inhomogeneity zonal medium model10.1109/tap.2020.3008631 ↗
10. Study on the electromagnetic scattering characteristics of high-speed target with non-uniform plasma via the FCC-FDTD method10.1109/tap.2022.3161492 ↗
11. Analyzing the electromagnetic scattering characteristics for 3-D inhomogeneous plasma sheath based on PO method10.1109/tps.2016.2612003 ↗
12. Research on the FDTD method of electromagnetic wave scattering characteristics in time-varying and spatially nonuniform plasma sheath10.1109/tps.2016.2617680 ↗
13. Electromagnetic scattering characteristics of blunt cone aircraft under THz waves based on PO method10.1109/tps.2022.3186729 ↗
14. Impact of reentry speed on the transmission of obliquely incident THz waves in realistic plasma sheaths10.1109/tps.2017.2788201 ↗
15. A terahertz signal propagation model in hypersonic plasma sheath with different flight speed10.1063/1.5091676 ↗
16. Impact of half-angles on the transmission of terahertz wave in inhomogeneous plasma sheath10.1109/tps.2020.3029837 ↗
17. Studies of terahertz wave propagation in realistic reentry plasma sheath10.2528/pier16061202 ↗
18. Research on electromagnetic scattering and imaging characteristics of targets with slightly rough metal surface
19. Coupling model and electronic compensation of antenna-radome system for hypersonic vehicle with effect of high-temperature ablation10.1109/tap.2019.2948502 ↗
20. Analysis of weakly ionized ablation plasma flows for a hypersonic vehicle10.1016/j.ast.2016.02.005 ↗
21. A segmentation calculation method for plasma collision frequency considering the electro-magnetic wave driving effect10.7498/aps.63.235201 ↗
22. Y. Wei , “Multi-field coupling numerical study on plasmasonic sheath of hypersonic flying craft,” M.S. thesis, Harbin Institute of Technology, China, 2017.
23. Y. F. Xiao , “Research on scattering characteristics of the target coated with plasma sheath by PO method,” M.S. thesis, Xidian University, China, 2019.
24. Problems of rate chemistry in the flight regimes of aeroassisted orbital transfer vehicles
25. Assessment of a two-temperature kinetic model for dissociating and weakly ionizing nitrogen10.2514/3.55 ↗
26. A one-equation turbulence model for aerodynamic flows
27. Y. Liang , “Research on modeling and fast calculation related to electromagnetic scattering from the rough surface and composite scattering from the rough surface and target,” Ph.D. thesis, Xidian University, Xi’an, China, 2011.