| Budget Amount *help |
¥16,380,000 (Direct Cost: ¥12,600,000、Indirect Cost: ¥3,780,000)
Fiscal Year 2019: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2018: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2017: ¥6,630,000 (Direct Cost: ¥5,100,000、Indirect Cost: ¥1,530,000)
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| Outline of Final Research Achievements |
The purpose of this study is to develop a practical MPD thruster system for manned Mars exploration. A conventional MPD thruster is generally heavy and complicated because it needs to have water-cooled solenoidal coils. Accordingly, it is hard to utilize conventional MPD thrusters for near-future large-scale space missions. When by using permanent magnets like samarium cobalt (SmCo) magnets a magnetic field is applied to an MPD thruster, its problem will be solved. In this research, shape and strength of magnetic fields applied with permanent magnets were changed, and electrode configuration was also changed. Then, the performance characteristics were examined and compared with previous results. A typical performance with 60 mg/s of NH3 at 6.75 kW was a thrust of 477.4 mN, a specific impulse of 811.4 s and a thrust efficiency of 19.0% with an axial magnetic field strength of 0.157 T.
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