Nagata Yasunori, Yamada Kazuhiko, Abe Takashi
宇宙航空研究開発機構特別資料 JAXA-SP-, (14) 29-34, Mar 25, 2015
46th Fluid Dynamics Conference / 32nd Aerospace Numerical Simulation Symposium (July 3-4, 2014. Hirosaki Bunka Center), Hirosaki, Aomori, JapanIn the electrodynamic flow control, weakly-ionized plasma flow behind the strong shock wave could be controlled by the applied magnetic field around a reentry vehicle. To control the field, a very strong magnetic field is required and it could be applied by the superconducting magnet. However, the superconducting magnet system, including a superconducting magnetic coil, an electrical current source, a cooling mechanism, and refrigerant, is large and heavy for a reentry capsule such as the Hayabusa capsule. Thus, in this study, to avoid the use of the superconducting magnet, the electrodynamic effect by multiple weaker magnets such as permanent magnets is numerically investigated. According to the MHD simulation, the drag force can be also enhanced by the multiple magnets and it is clearly affected by the magnet array. Especially, the aerodynamic force part is significantly affected because the wall pressure is varied near the magnet. Therefore, the multiple magnet array might be as effective as the strong single magnet for the electrodynamic flow control.Physical characteristics: Original contains color illustrations