NUMERICAL ANALYSIS OF RADIO FREQUENCY BLACKOUT FOR ATMOSPHERIC REENTRY VEHICLE USING CFD-CEM COMBINED METHOD

2016 ◽  
Author(s):  
Yusuke Takahashi ◽  
Reo Nakasato ◽  
Nobuyuki Oshima
Keyword(s):  
Numerical Analysis ◽  
Radio Frequency ◽  
Combined Method ◽  
Reentry Vehicle ◽  
Atmospheric Reentry

Numerical analysis on the effect of angle of attack on evaluating radio-frequency blackout in atmospheric reentry

2016 ◽  
Vol 68 (11) ◽  
pp. 1295-1306 ◽  
Author(s):  
Minseok Jung ◽  
Hisashi Kihara ◽  
Ken-ichi Abe ◽  
Yusuke Takahashi
Keyword(s):  
Numerical Analysis ◽  
Radio Frequency ◽  
Angle Of Attack ◽  
Atmospheric Reentry

scholarly journals A Metamaterial-Inspired Approach to Mitigating Radio Frequency Blackout When a Plasma Forms Around a Reentry Vehicle

Photonics ◽  
2020 ◽  
Vol 7 (4) ◽  
pp. 88
Author(s):  
Bruce A. Webb ◽  
Richard W. Ziolkowski
Keyword(s):  
Radio Frequency ◽  
Plasma Layer ◽  
Signal Transmission ◽  
Split Ring Resonator ◽  
Dipole Antennas ◽  
Electromagnetic Plane Wave ◽  
Reentry Vehicle ◽  
Atmospheric Reentry ◽  
Matched Design ◽  
Electromagnetic Plane

Radio frequency (RF) blackout and attenuation have been observed during atmospheric reentry since the advent of space exploration. The effects range from severe attenuation to complete loss of communications and can last from 90 s to 10 min depending on the vehicle’s trajectory. This paper examines a way of using a metasurface to improve the performance of communications during reentry. The technique is viable at low plasma densities and matches a split-ring resonator (SRR)-based mu-negative (MNG) sheet to the epsilon-negative (ENG) plasma region. Considering the MNG metasurface as a window to the exterior of a reentry vehicle, its matched design yields high transmission of an electromagnetic plane wave through the resulting MNG-ENG metastructure into the region beyond it. A varactor-based SRR design facilitates tuning the MNG layer to ENG layers with different plasma densities. Both simple and Huygens dipole antennas beneath a matched metastructure are then employed to demonstrate the consequent realization of significant signal transmission through it into free space beyond the exterior ENG plasma layer.

scholarly journals Analysis of Radio Frequency Blackout for a Blunt-Body Capsule in Atmospheric Reentry Missions

Aerospace ◽  
2016 ◽  
Vol 3 (1) ◽  
pp. 2 ◽  
Author(s):  
Yusuke Takahashi ◽  
Reo Nakasato ◽  
Nobuyuki Oshima
Keyword(s):  
Radio Frequency ◽  
Blunt Body ◽  
Atmospheric Reentry
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