Sample and return mission from asteroid Nereus via solar electric propulsion
Sample and return mission from asteroid Nereus via solar electric propulsion
复制标题
通过太阳能电力推进从小行星海神星进行采样和返回任务
DOI：
10.1016/0094-5765(95)00173-5
复制
发表时间：
1996
影响因子：
3.5
通讯作者：
S. Sawai
中科院分区：
文献类型：
--
作者：
J. Kawaguchi;A. Fujiwara;S. Sawai
介绍了中国科学院空间与航天科学研究所（ISAS）利用电推进器对近地小行星Nereus（4660）进行采样和返回的使命。这里假设太阳能电力推进（SEP）的离子推进器，即使是最小的航天器，重量只有350公斤，以完成这一困难的使命。ISAS计划于1997年和1998年通过自己的运输机M-V发射一个月球和一个火星轨道器。文中还详细介绍了Nereus的探测方法和探测方案，重点介绍了Nereus的测绘和采样序列，特别是提出了一种以“人工地标”为特征点的采样方案，即在Nereus表面投放的目标板。这是用于航天器通过机载光学辅助自主与它会合。假设样品通过地面上的双曲线再入舱回收。基于ISAS的一些经验进行了实用的重量估算，确定了航天器设计的可行性。
The sample and return mission to near Earth asteroid Nereus (4660) via an electric propulsion is presented in this paper, which is investigated at the Institute of Space and Astronautical Science (ISAS). An ion thruster is assumed here for Solar Electric Propulsion (SEP), which enables even the smallest spacecraft that weighs about only 350 kg to accomplish that difficult mission. ISAS is scheduling to launch one Lunar and one Martian orbiter in 1997 and 1998 via its own transporter M-V. And this concept follows them next in the launch window of 2002. The approach and exploration scenario to Nereus are also described here in detail, among which the mapping as well as sampling sequences are focused on. Especially, the sampling scheme proposed here is the characteristic point featuring an ‘artificial landmark’, which is the target plate dropped on the surface. This is used for the spacecraft to make a rendezvous autonomously with it via an optical aid onboard. Samples are assumed to be recovered via a hyperbolic reentry capsule on the ground. Practical weight estimation based on some heritages of ISAS does firm the spacecraft design feasibility.