G4 低電圧およびAlを燃料に用いた電気推進器の推力測定(一般講演(2))

概要

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Exploding Wire-Pulsed Plasma Thruster (EW-PPT) is the satellite thruster using a wire explosion. Wire explosion is the phenomenon that wire is exploded by thermal expansion due to low-voltage pulse current from capacitor bank (charging voltage: about 280V, capacity of condenser: 680-5440μF). The produced expansion gasses after exploding a wire contribute as propulsion of thruster. This study, obtain the velocity of the pendulum to measure impulse bit(I_<bit>). But there is a problem that impulse bit is underestimated because the pendulum's mass is too light. The purpose of this paper is to revaluate impulse bit by increasing the pendulum's mass. As a result, impulse bit (I_<bit>) is 11598μN・sec with the wire of Al. This value is larger than the value measured by using light-pendulum.
2011-01-27