A study of the transmission characteristics of terahertz waves in hypersonic target flow field

Based on the chemical reaction model proposed by Park, the ‘blackout’ of a reentry vehicle is studied in this paper. The temperature, pressure and electron density distribution characteristics around the reentry vehicle were simulated at various flight speeds and altitudes by USim. Subsequently, the...

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Bibliographic Details
Published in:Journal of plasma physics 2022-08, Vol.88 (4), Article 905880406
Main Authors: Zhang, Jie, Han, Bing, Zhao, Shanchao, Zhang, Guodong, Duan, Wenshan
Format: Article
Language:English
Subjects:
Blackout
Chemical reactions
Density distribution
Electric fields
Electron density
Energy
Flow control
Heat conductivity
Matrix methods
Plasma
Plasma physics
Pressure effects
Propagation
Reentry
Reentry vehicles
Simulation
Temperature effects
Terahertz frequencies
Viscosity
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Summary:Based on the chemical reaction model proposed by Park, the ‘blackout’ of a reentry vehicle is studied in this paper. The temperature, pressure and electron density distribution characteristics around the reentry vehicle were simulated at various flight speeds and altitudes by USim. Subsequently, the scattering matrix method was used to study the transmission characteristics of terahertz waves in ‘blackout’. The simulation results show that the temperature around the aircraft is mainly affected by speed, the pressure is mainly affected by the altitude and electron density is affected by both of these factors. The calculation results show that the transmission characteristics of terahertz waves in plasma are mainly affected by electron density, while the effects of temperature and pressure cannot be ignored either.
ISSN:0022-3778
1469-7807
DOI:10.1017/S0022377822000678