D244 空気吸込み式イオンエンジンの成立性の定量的評価(D-24 高エンタルピー流(2),一般講演)

概要

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The air breathing ion engine (ABIE) is a new electric propulsion system to be used to compensate the aerodynamic drag of the satellite orbiting at extremely low altitudes. In this system, the low-density atmosphere is taken in and used as the propellant of ion engines to eliminate the propellant mass restrictions. Since feasibility of the ABIE depends strongly on the air intake efficiency and the compression ratio, a numerical analysis of the air intake flow has been performed by the direct-simulation Monte-Carlo method. Influences of the flight altitude, the aspect-ratio of the air intake duct, the angle of attack, and the wall conditions on the air intake performance are investigated, and formulated in analytical relations. Using these relations, fundamental specifications of the ABIE are discussed.
2004-08-09