Artificial equilibrium points and bi-impulsive maneuvers to observe 243 Ida

来源 :中国航空学报(英文版) | 被引量 : 0次 | 上传用户:gxlzx
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
In the restricted three-body problem, the traditional Lagrange points L1 and L2 are the only equilibrium points near the asteroid 243 Ida. The thrust generated by a solar sail over a space-craft enables the existence of new artificial equilibrium points, which depend on the position of the spacecraft with respect to the asteroid and the attitude of the solar sail. Such equilibrium points gen-erate new spots to observe the body from above or below the plane of motion. Such points are very good observational locations due to their stationary condition. This work provides a preliminary analysis to observe Ida through the use of artificial equilibrium points as spots combined with trans-fer maneuvers between them. Such combination can be used to observe the asteroid from more dif-ferent points of view in comparison to fixed ones. The analyses are made for a spacecraft equipped with a solar sail and capable of performing bi-impulsive maneuvers. The solar radiation pressure is used both to maintain the equilibrium condition and to reduce the costs of the transfers and/or to create transfers with longer duration. This is a new aspect of the present research, because it combi-nes the continuous thrust with initial and final small impulses, which are feasible for most of the spacecraft, because the magnitudes of the impulses are very low. These combined maneuvers may reduce the transfer times of the maneuvers in most of the cases, compared with the maneuvers based only on continuous thrust. Several options involved in these transfers are shown, like to minimize the fuel spent (Δv) as a function of the transfer time or to extend the duration of the travel between the points. Extended transfer times can be useful when observations are required during the transfers. ? 2020 Chinese Society of Aeronautics and Astronautics. Production and hosting by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
其他文献
随着时代的发展社会的进步,我国进入了一个大数据时代,在大数据时代下打破了时间空间的束缚,将人与信息紧密的连接在一起,本文将针对大数据及其在土木工程中的应用进行探究提
每次看到家中收藏的一些旧字画,总会涌起一种悠长的沧桑感和洇润的缅怀情。尽管友人说现在这些字画值些钱了,但我从没有这些想头,只是觉得在这些旧字画中积蓄了先辈那种雅致而高逸的人文遗韵。前不久,在一台文艺演出中看到梅葆玖的演出,不由得想起其父梅兰芳先生在抗战时期在上海鬻画为生的情形。  梅先生作为一代蜚声海内外的艺术大师,有着精湛的京剧造诣,系梅派旦行的创造者,他的表演典雅雍容、华丽细腻、颇有书卷气。其
我国的建筑在建造施工的时候存在很多问题,其中最主要的问题是建筑施工的现场扬尘污染十分严重,给施工的场内以及场外周边的空气环境造成了严重影响,带来了很大的污染危害.文
在分析生态城市对城市河流水环境的要求基础上,综述了河道生态护岸不同方法的优缺点,结合城市河道特点,设计了是一种新型的创新新型多层次自嵌式生态挡土墙提高河道沿河生态
在建筑装饰行业,铝合金窗的安装方式多种多样,常见的安装方式为洞口安装.有时,为了扩大室内使用空间,有的工程采用钢结构支承凸窗,即整个铝合金窗框固定在钢结构上,钢结构通