[HTML][HTML] Difference analysis in terahertz wave propagation in thermochemical nonequilibrium plasma sheath under different hypersonic vehicle shapes

W Ouyang, LIU Qi, WU Zhengwei - Chinese Journal of Aeronautics, 2023 - Elsevier
Research on terahertz communication under different vehicles has important guiding
significance for the design of future hypersonic vehicle and Radio Frequency (RF) blackout …

[HTML][HTML] Influence analysis of uncertainty of chemical reaction rate under different reentry heights on the plasma sheath and terahertz transmission characteristics

W Ouyang, C Ding, Q Liu, Q Lu, Z Wu - Results in Physics, 2023 - Elsevier
Plasma sheath prediction of hypersonic vehicle is critical to radio frequency (RF) blackout
solutions as well as vehicle design and development. In this paper, an optimized chemical …

[HTML][HTML] Nonstationary channel model of reentry plasma sheath for spacecraft: Overview, parameter estimation, and perspective

SHI Lei, LIU Zongyuan, BAO Weimin, YAO Bo… - Chinese Journal of …, 2024 - Elsevier
Abstract The Tracking, Telemetering, and Command (TT&C) communication of spacecraft
faces severe limitations during reentry. The Electromagnetic (EM) propagation channel is …

Numerical investigation of surface catalytic effect on the plasma sheath of a hypersonic re-entry capsule

M Yu, Z Qiu, Y Takahashi - Physics of Fluids, 2023 - pubs.aip.org
Radio frequency blackout indicates the communication interruption between signal
monitoring sites and re-entry vehicles; it is a serious threat to the safety of astronauts and the …

Propagation path of radio waves in nonequilibrium reentry plasma around a nanosatellite with an inflatable aeroshell

Y Takahashi - IEEE Transactions on Aerospace and Electronic …, 2022 - ieeexplore.ieee.org
A communication blackout is one of the major problems that occurs during the reentry of a
satellite into the Earth's atmosphere, which is caused by the reentry plasma blocking …

Computational Study on Air Film Approach in Reentry Blackout Mitigation

T Miyashita, H Takasawa, Y Takahashi, L Steffens… - AIAA Journal, 2024 - arc.aiaa.org
Communication blackouts during the atmospheric reentry phase are a significant challenge,
as flight data are lost due to interruptions caused by plasma gas generated by aerodynamic …

Effect of non-ionizing reaction rate (assumed to be controllable) on the plasma generation mechanism and communication around RAMC vehicle during atmospheric …

W Ouyang, Q Liu, Z Zhang, T Jin, Z Wu - Scientific Reports, 2021 - nature.com
Radio frequency (RF) blackout occurs during radio attenuation measurement C (RAMC)
vehicle reentry due to the attenuation effect of the plasma sheath on the communication …

Analyses of multiphysical model of electromagnetic and fluid in thermodynamic equilibrium and chemical nonequilibrium state

K Wang, J Li - IEEE Transactions on Microwave Theory and …, 2021 - ieeexplore.ieee.org
During the flight of a hypersonic vehicle, a plasma sheath will be produced around the
vehicle due to the effect of the shock layer. Because the plasma sheath will absorb, reflect …

Emission spectroscopy diagnosis and discharge characteristics distribution analysis of high-frequency, high-enthalpy inductive coupling plasma generator

Y Niu, W Bao, D Liu, X Li, Y Liu - Vacuum, 2024 - Elsevier
To study the electromagnetic properties through reentry plasma on ground, a large-sized
inductive coupled plasma generator is designed to produce a long-duration, large size and …

Experimental study on the life and performance of an improved DC arc plasma torch

YH Hu, SR Sun, X Meng, HJ Huang… - Journal of Physics D …, 2024 - iopscience.iop.org
A novel DC arc plasma torch is designed in this paper in order to reduce the electrode
erosion, and a series of experiments are carried out to investigate how to improve the …