Physics
Scientific paper
Oct 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990dres.iafcs....d&link_type=abstract
IAF, International Astronautical Congress, 41st, Dresden, Federal Republic of Germany, Oct. 6-12, 1990. 11 p.
Physics
Earth-Moon Trajectories, Geomagnetic Tail, Launch Windows, Solar Physics, Swingby Technique, Transfer Orbits, European Space Agency, International Cooperation, Japanese Space Program, Nasa Space Programs, U.S.S.R. Space Program
Scientific paper
The GEOTAIL spacecraft of the International Solar-Terrestrial Physics Program will use a series of paired lunar swingbys to explore distant parts of the earth's magnetic tail. A 21-day launch window has been calculated for GEOTAIL, in July and August 1992, to start its distant-tail phase with a first lunar swingby (S1) on September 8, 1992. The main launch window in July utilizes 4.5 revolutions in a transfer orbit to S1, with a mid-August contingency window that uses 2.5 transfer-orbit revolutions before S1. Designing a good distant-tail trajectory, and then accurately matching it at S1 for every day in the launch window, seems to be the easiest and most reliable strategy. However, the total delta-V costs of the current designs can probably be reduced, possibly with the help of new interactive software that can be run on personal computers.
Dunham David W.
Farquhar Robert W.
Jen Shao-Chiang
Kawaguchi Jun'ichiro
Uesugi Kuniori
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