Current-voltage characteristics of a discharge in a supersonic flow of ionized air in permanent magnets field

• Published in: Journal of physics. Conference series 2020-12, Vol.1698 (1), p.12011
• Main Authors: Baranov, D.S., Bityurin, V.A., Bocharov, A.N., Bychkov, S.S., Grushin, V.A., Kusmartseva, E. V., Tretyakova, N.V., Batura, N.I., Zhurkin, N.G.
• Format: Article
• Language: English
• ISSN: 1742-6588; 1742-6596
• DOI: 10.1088/1742-6596/1698/1/012011

The work is devoted to the development of direct conversion devices of energy of high-enthalpy hypersonic gas flow into electrical energy. The experiments were carried out to study the electrical characteristics of the gap between two electrodes filled with weakly ionized plasma of the airflow at the wind tunnel with a magnetogasdynamic accelerator SMGDU. The voltages induced in the field of permanent magnets and the corresponding induction currents were measured with an ohmic load in the external circuit. The current-voltage characteristics of the discharge are constructed for the case of an additional supply of a current pulse from an external source to the interelectrode gap. The conductivity of the medium in the gas flow and the MHD interaction parameter were estimated. The results obtained can be used in the design of surface MHD generators for the autonomous production of electrical power on board of a hypersonic aircraft.