Unpowered modification of probe trajectories in the gravitational field of a planet through repeated flybys of the moons of the planet

Details Unpowered modification of probe trajectories in the gravitational field of a planet through repeated flybys of the moons of the planet Unpowered modification of probe trajectories in the gravitational field of a planet through repeated flybys of the moons of the planet

Mar 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980dglr.meetr....h&link_type=abstract

Deutsche Gesellschaft für Luft- und Raumfahrt, Walter-Hohmann-Symposium ueber Raumflugmechanik, Cologne, West Germany, Mar. 12,

Other

Flyby Missions, Gravitational Fields, Planetary Gravitation, Spacecraft Trajectories, Trajectory Analysis, Fuel Consumption, Interplanetary Trajectories, Lunar Orbits, Lunar Rotation, Orbit Calculation, Orbital Rendezvous, Solar Orbits, Solar System, Space Rendezvous

Scientific paper

In the study of the planets of the solar system, it is often desirable to have the ability to alter a probe's position parameters over a wide range. Because of the high fuel demands of such maneuvers, the possibility of achieving unpowered trajectory modifications by exploiting the gravitational forces of planet's moons is studied. A simple model of the motion of the moons and probe is presented, which assumes that the moons orbit the planet in the equatorial plane. Based on the requirement that the values of the hyperbolic excess velocities must agree before and after the flyby, a group of possible probe trajectories results that have only two free parameters. Finally, it is demonstrated that since the parameters are only variable to a limited degree, a rendezvous with another moon is not always possible, while one with the same moon is.

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