Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975aiaa.confr....h&link_type=abstract
American Institute of Aeronautics and Astronautics and American Geophysical Union, Conference on the Exploration of the Outer Pl
Astronomy and Astrophysics
Astronomy
Jupiter (Planet), Mariner Space Probes, Mission Planning, Outer Planets Explorers, Uranus (Planet), Design Analysis, Natural Satellites, Spacecraft Design, Spacecraft Trajectories, Trajectory Analysis
Scientific paper
Some results of recent planning studies for a Mariner Jupiter/Uranus 1979 (MJU 79) mission are discussed. It is noted that a 1979 launch will provide unique approach geometries to Uranus because, when viewed from an approaching spacecraft in 1985, the pole-on orientation of the planet and its satellite orbit tracks will seem to describe a target, permitting a long observational period of almost all the lighted hemispheres of Uranus and its five known satellites. The overall scientific objectives for a MJU 79 mission are outlined, and mission considerations are discussed, including energy requirements, use of a Jupiter gravity-assist to reduce flight-time and launch vehicle-capability requirements, and various dual-launch strategies. Basic trajectories for Jupiter and Uranus encounters are considered, and general characteristics of the MJU 79 spacecraft are described. Expected scientific returns from a typical Uranus encounter is examined, including high-resolution scanning of the planet and its satellites, more accurate estimates of satellite radii and masses, and high-resolution IR studies of the planet.
Hyde Jack R.
Wallace Alfred R.
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