Experimental demonstration and mechanism of mitigating reentry blackout via surface catalysis effects
- 17 February 2021
- journal article
- research article
- Published by IOP Publishing in Journal of Physics D: Applied Physics
- Vol. 54 (22), 225201
- https://doi.org/10.1088/1361-6463/abe746
Abstract
Reentry blackout phenomenon, which is the communication cut-off between the reentry vehicle and ground station, is a crucial problem that needs to be addressed. To improve safety during reentry, a new mitigation method was proposed using the surface catalysis effect. However, this method has not been investigated extensively by experimental methods. In this study, we experimentally demonstrated the mitigation method using a 1 MW arc-heated wind tunnel and numerically clarified the mitigation mechanism. As a demonstration experiment, communication tests were conducted for comparing the two cases. In the first case, a ceramic surface was used as a low catalytic wall, whereas in the second case, a copper surface was used as a high catalytic wall in the arc-heated wind tunnel. The experimental results indicated that the blackout occurred when alumina was used as the low catalytic wall. On the other hand, for the high catalytic wall using copper, blackout was avoided. The tests were reproduced in the wind tunnel using a numerical simulation technique. From the simulation results, the mitigation mechanism suggested that: 1) the number of nitrogen and oxygen atoms decreased due to catalysis; 2) forward reactions of electron impact ionization were suppressed due to the decrease in the number of atoms; and 3) the suppression of reactions decreased the number of electrons, thereby mitigating the reentry blackout. Additionally, the numerical simulations performed on the reentry plasma around the reentry capsule suggested that the mitigation mechanisms between the arc-heated wind flow and reentry plasma were similar despite the different airflow conditions.Funding Information
- Japan Society for the Promotion of Science (17KK0123)
This publication has 15 references indexed in Scilit:
- Advanced validation of CFD-FDTD combined method using highly applicable solver for reentry blackout predictionJournal of Physics D: Applied Physics, 2015
- Examination of Radio Frequency Blackout for an Inflatable Vehicle During Atmospheric ReentryJournal of Spacecraft and Rockets, 2014
- Parameter-Free Simple Low-Dissipation AUSM-Family Scheme for All SpeedsAIAA Journal, 2011
- Analysis of an Electromagnetic Mitigation Scheme for Reentry Telemetry Through PlasmaJournal of Spacecraft and Rockets, 2008
- Recombination of atomic oxygen on α-Al2O3 at high temperature under air microwave-induced plasmaChemical Physics, 2007
- Accurate Computations of Arc-Heater Flows Using Two-Equation Turbulence ModelsJournal of Thermophysics and Heat Transfer, 2007
- Investigation of Remote Antenna Assembly for Radio Communication with Reentry VehicleJournal of Spacecraft and Rockets, 2001
- The effects of surface catalysis on the hypersonic shock wave/boundary layer interactionPublished by American Institute of Aeronautics and Astronautics (AIAA) ,1994
- Assessment of a two-temperature kinetic model for dissociating and weakly ionizing nitrogenJournal of Thermophysics and Heat Transfer, 1988
- Lower-upper implicit schemes with multiple grids for the Euler equationsAIAA Journal, 1987