Powered might of electron cyclotron resonance ion engines on Hayabusa explorer
Powered might of electron cyclotron resonance ion engines on Hayabusa explorer
复制标题
DOI：
10.2514/1.25434
复制
发表时间：
2007-05-01
影响因子：
1.9
通讯作者：
Kawaguchi, Jun'ichiro
中科院分区：
文献类型：
--
作者：
Kuninaka, Hitoshi;Nishiyama, Kazutaka;Kawaguchi, Jun'ichiro
The electron cyclotron resonance ion engine has long life and high reliability because of electrodeless plasma generation in both the ion generator and the neutralizer. Four mu 10s, each generating a thrust of 8 mN, specific impulse of 3200 s, and consuming 350 W of electric power, propelled the Hayabusa asteroid explorer launched on May 2003. After vacuum exposure and several baking runs to reduce residual gas, the ion engine system established continuous acceleration. Electric propelled delta-V Earth gravity assist, a new orbit change scheme that uses electric propulsion with a high specific impulse was applied to change from a terrestrial orbit to an asteroid-based orbit. In 2005, Hayabusa, using solar electric propulsion, managed to successfully cover the solar distance between 0.86 and 1.7 AU. It rendezvoused with, landed on, and lifted off from the asteroid Itokawa. During the 2-year flight, the ion engine system generated a delta-V of 1400 m/s while consuming 22 kg of xenon propellant and operating for 25,800 h.
