2026-09-19T01:16:58Zhttps://dspace.mit.edu/server/oai/request

oai:dspace.mit.edu:1721.1/452162022-01-13T07:54:11Zcom_1721.1_7582com_1721.1_7581col_1721.1_131023

Jeffrey A. Hoffman. Ishimatsu, Takuto Massachusetts Institute of Technology. Dept. of Aeronautics and Astronautics. Massachusetts Institute of Technology. Department of Aeronautics and Astronautics 2009-04-29T17:09:55Z 2009-04-29T17:09:55Z 2008 2008 http://hdl.handle.net/1721.1/45216 302415124 Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2008. Includes bibliographical references (p. 155-157). This thesis develops a tool which is capable of calculating ballistic interplanetary trajectories with planetary flyby options based on the knowledge of astrodynamics and analyzes Mars trajectories in the time frame 2020 to 2040, including transfer trajectories with Venus flybys. Using the trajectory programs developed in this work, we investigate the relation between departure and arrival dates and energy required for the transfer trajectories. The contours of C3 or [delta]Vtot for a range of departure dates and times of flight would be useful for the creation of a long-term Earth-Mars and Mars-Earth transportation schedule for mission planning purposes. For planetary flybys, we allow simple powered flybys with the velocity impulse at periapsis to expand the flyby mission windows. Having obtained the results for Earth-Mars and Mars-Earth trajectories by a full-factorial computation, we discuss the nature of the trajectories and the competitiveness of Earth-Venus-Mars flyby trajectory windows with Earth-Mars direct trajectory windows. by Takuto Ishimatsu. S.M. 157 p. eng Massachusetts Institute of Technology M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission. http://dspace.mit.edu/handle/1721.1/7582 Aeronautics and Astronautics. Interplanetary trajectory analysis for 2020-2040 Mars missions including Venus flyby opportunities Thesis application/pdf false Publication unknown unknown <Publication xmlns="https://www.openaire.eu/cerif-profile/1.1/" id="f3869a41-947f-4f33-8656-a8e00eb892c2"> <Type xmlns="https://www.openaire.eu/cerif-profile/vocab/COAR_Publication_Types">http://purl.org/coar/resource_type/c_1843</Type> <Language>eng</Language> <Title>Interplanetary trajectory analysis for 2020-2040 Mars missions including Venus flyby opportunities</Title> <PublishedIn> <Publication> </Publication> </PublishedIn> <PublicationDate>2008</PublicationDate> <Authors> <Author> <DisplayName>Ishimatsu, Takuto</DisplayName> <Affiliation> <OrgUnit> </OrgUnit> </Affiliation> </Author> </Authors> <Editors> </Editors> <Publishers> <Publisher> <DisplayName>Massachusetts Institute of Technology</DisplayName> <OrgUnit /> </Publisher> </Publishers> <License>http://dspace.mit.edu/handle/1721.1/7582</License> <Keyword>Aeronautics and Astronautics.</Keyword> <Abstract>This thesis develops a tool which is capable of calculating ballistic interplanetary trajectories with planetary flyby options based on the knowledge of astrodynamics and analyzes Mars trajectories in the time frame 2020 to 2040, including transfer trajectories with Venus flybys. Using the trajectory programs developed in this work, we investigate the relation between departure and arrival dates and energy required for the transfer trajectories. The contours of C3 or [delta]Vtot for a range of departure dates and times of flight would be useful for the creation of a long-term Earth-Mars and Mars-Earth transportation schedule for mission planning purposes. For planetary flybys, we allow simple powered flybys with the velocity impulse at periapsis to expand the flyby mission windows. Having obtained the results for Earth-Mars and Mars-Earth trajectories by a full-factorial computation, we discuss the nature of the trajectories and the competitiveness of Earth-Venus-Mars flyby trajectory windows with Earth-Mars direct trajectory windows.</Abstract> <Access xmlns="http://purl.org/coar/access_right" > </Access> </Publication>