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Designing capture trajectories to unstable periodic orbits around Europa

Show simple item record Russell, Ryan P. Lam, Try 2006-02-14T17:39:04Z 2006-02-14T17:39:04Z 2006-01-22
dc.identifier.citation 2006 AAS/AIAA SpaceFlight Mechanics Meeting, Tampa, Florida, January 22-26, 2006. en
dc.identifier.clearanceno 06-0045
dc.description.abstract The hostile environment of third body perturbations restricts a mission designer’s ability to find well-behaved reproducible capture trajectories when dealing with limited control authority as is typical with low-thrust missions. The approach outlined in this paper confronts this shortcoming by utilizing dynamical systems theory and an extensive preexisting database of Restricted Three Body Problem (RTBP) periodic orbits. The stable manifolds of unstable periodic orbits are utilized to attract a spacecraft towards Europa. By selecting an appropriate periodic orbit, a mission designer can control important characteristics of the captured state including stability, minimum altitudes, characteristic inclinations, and characteristic radii among others. Several free parameters are optimized in the non-trivial mapping from the RTBP to a more realistic model. Although the ephemeris capture orbit is ballistic by design, low-thrust is used to target the state that leads to the capture orbit, control the spacecraft after arriving on the unstable quasi-periodic orbit, and begin the spiral down towards the science orbit. The approach allows a mission designer to directly target fuel efficient captures at Europa in an ephemeris model. Furthermore, it provides structure and controllability to the design of capture trajectories that reside in a chaotic environment. en
dc.description.sponsorship NASA/JPL en
dc.format.extent 1450060 bytes
dc.format.mimetype application/pdf
dc.language.iso en_US en
dc.publisher Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2006. en
dc.subject unstable en
dc.subject periodic orbit en
dc.subject manifold en
dc.subject capture en
dc.subject low-thrust en
dc.subject Europa en
dc.title Designing capture trajectories to unstable periodic orbits around Europa en
dc.type Preprint en

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