Engineering Journal: Science and InnovationELECTRONIC SCIENCE AND ENGINEERING PUBLICATION
Certificate of Registration Media number Эл #ФС77-53688 of 17 April 2013. ISSN 2308-6033. DOI 10.18698/2308-6033
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Article

Analysis of spacecraft trajectories for the space mission Earth - Apophis - Earth and the spacecraft orbital motion around the asteroid Apophis

Published: 12.05.2017

Authors: Anqi Lang

Published in issue: #7(67)/2017

DOI: 10.18698/2308-6033-2017-7-1635

Category: Aviation and Rocket-Space Engineering | Chapter: Aircraft Dynamics, Ballistics, Motion Control

It is of great current interest to organize a space mission to explore the "dangerous" asteroid Apophis in order to research its surface using a landing device and to conduct remote investigation with the instruments of this device using a satellite near Apophis. This paper defines and examines the trajectories for the spacecraft flight (with a special mini-device) to the asteroid Apophis, staying there for some time and coming back to the Earth. We have estimated economical trajectories for this mission provided that it would last for two years -from 2019 to 2022. We have analyzed the task of the spacecraft motion around the asteroid taking into account three types of perturbations: the gravitational effects of some distant celestial bodies (Sun, Earth, Moon, Venus and Jupiter), the non-spherical structure of Apophis and the solar radiation pressure (SRP). The article considers two possible types of spacecraft: the main spacecraft, which is expected to come back to the Earth after staying around Apophis for about a week or a month, and a special mini-satellite, with a long stay around the asteroid for clarifying the asteroid orbit.


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