2026-09-18T20:47:36Zhttps://dspace.mit.edu/server/oai/requestoai:dspace.mit.edu:1721.1/628892026-06-06T01:06:53Zcom_1721.1_7582com_1721.1_7581col_1721.1_131023
Jeffrey A. Hoffman and John Danis.
Lanford, Ephraim Robert
Massachusetts Institute of Technology. Dept. of Aeronautics and Astronautics.
Massachusetts Institute of Technology. Department of Aeronautics and Astronautics
Massachusetts Institute of Technology. Engineering Systems Division
2011-05-23T15:32:53Z
2011-05-23T15:32:53Z
2011
2011
http://hdl.handle.net/1721.1/62889
725945386
Thesis (S.M. in Technology and Policy)--Massachusetts Institute of Technology, Engineering Systems Division, Technology and Policy Program; and, (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2011.
This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Cataloged from student submitted PDF version of thesis.
Includes bibliographical references (p. 126-136).
In comparison with conventional and other conceived approaches, hopper spacecraft offer unique advantages in exploring Solar System objects beyond Earth. The present work began with a survey - based on documents from the White House, Congress, NASA, and the international planetary science community - of exploration plans and objectives in the United States. The results are presented, and lead into a representative description of goals that might be enabled by hoppers. Relevant hopper attributes are then described in comparison to other vehicle types, and these vehicle characteristics are mapped to the exploration goals to show how hoppers can facilitate achievement of policy and science objectives. Specific examples are examined by formulating and analyzing a demonstrative and timely variety of model missions on Earth's Moon, Mars, and Saturn's moon Titan. These analyses use models for both hovering and ballistic hops to produce realistic values for hopper performance including mass, fuel consumption, trajectory characteristics, and basic spacecraft subsystem characteristics. In sum, planetary hopper technology is not for every mission, but generally offers paradigm-changing mobility and flexibility for small additional mass or development costs. Mission planners should evaluate hoppers for suitability to their exploration goals. Policy recommendations are offered toward this purpose.
by Ephraim Robert Lanford.
S.M.
S.M. in Technology and Policy
136 p.
eng
Massachusetts Institute of Technology
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http://dspace.mit.edu/handle/1721.1/7582
Engineering Systems Division.
Technology and Policy Program.
Aeronautics and Astronautics.
Unique abilities of hopper spacecraft to enable national objectives for solar system exploration
Thesis
application/pdf
Publication
unknown
unknown
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<Abstract>In comparison with conventional and other conceived approaches, hopper spacecraft offer unique advantages in exploring Solar System objects beyond Earth. The present work began with a survey - based on documents from the White House, Congress, NASA, and the international planetary science community - of exploration plans and objectives in the United States. The results are presented, and lead into a representative description of goals that might be enabled by hoppers. Relevant hopper attributes are then described in comparison to other vehicle types, and these vehicle characteristics are mapped to the exploration goals to show how hoppers can facilitate achievement of policy and science objectives. Specific examples are examined by formulating and analyzing a demonstrative and timely variety of model missions on Earth's Moon, Mars, and Saturn's moon Titan. These analyses use models for both hovering and ballistic hops to produce realistic values for hopper performance including mass, fuel consumption, trajectory characteristics, and basic spacecraft subsystem characteristics. In sum, planetary hopper technology is not for every mission, but generally offers paradigm-changing mobility and flexibility for small additional mass or development costs. Mission planners should evaluate hoppers for suitability to their exploration goals. Policy recommendations are offered toward this purpose.</Abstract>
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