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Title: A dynamical systems approach to the design of the science orbit around Europa
Authors: Gomez, Gerard
Lara, Martin
Russell, Ryan P.
Keywords: manifold
dynamical systems
orbital dynamics
unstable orbits
Issue Date: 4-Jun-2006
Publisher: Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2006.
Citation: 19th International Symposium on Space Flight Dynamics, Kanazawa, Japan, June 4-11, 2006.
Abstract: The science orbit for a future mission to Europa requires low eccentricity, low altitude, and high inclination. However, high inclination orbits around planetary satellites are unstable due to third-body perturbations. Without control, the orbiter impacts Europa after few weeks. To minimize control, a tour over the stable-unstable, averaged manifolds of unstable frozen orbits has been suggested. We proceed with the unaveraged equations and study the manifolds of unstable orbits that are periodic in a rotating frame attached to Europa. Massive numerical computation helps in understanding the unstable dynamics close to Europa, and, thus, in selecting long lifetime high inclination orbits. A final test of a selected set of initial conditions on a high fidelity, ephemeris model, validate the results.
Appears in Collections:JPL TRS 1992+

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