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Spiral Lamber's problem with generalized logarithmic spirals

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dc.contributor.author Roa, Javier
dc.contributor.author Pelaez, Jesus
dc.date.accessioned 2019-05-15T22:34:06Z
dc.date.available 2019-05-15T22:34:06Z
dc.date.issued 2016-02-14
dc.identifier.citation 26th AAS/AIAA Space Flight Mechanics Meeting, Napa, California, February 14-18, 2016 en_US
dc.identifier.clearanceno 16-1696
dc.identifier.uri http://hdl.handle.net/2014/46096
dc.description.abstract Lambert’s problem subject to a continuous acceleration is solved using the family of generalized logarithmic spirals. Thanks to the existence of two first integrals related to the energy and angular momentum surprising analogies with the Keplerian case are found. A minimum-energy spiral transfer exists. Increasing the value of the constant of the generalized energy yields pairs of conjugate spiral trajectories. The properties of such spirals are strongly connected with the properties of conjugate Keplerian orbits. When the generalized constant of the energy reaches a critical value the two solutions degenerate into a pair of parabolic spirals, one of which connects the two vectors through infinity. From that point the spiral transfers become hyperbolic. Generalized logarithmic spirals admit closed-form solutions to all the required magnitudes including the time of flight, providing a deep insight into the dynamics of the problem. In addition, the maximum acceleration along the transfer is found analytically so the solutions that violate the design constraints on the maximum thrust acceleration can be rejected without any further computations. When the time of flight is fixed there is still a degree of freedom in the solution, related to a control parameter. Resonant transfers appear naturally thanks to the symmetry properties of the generalized logarithmic spirals. The problem of designing a low-thrust transfer between two bodies can be reduced to solving the corresponding spiral Lambert’s problem. In order to show the versatility of the method it is applied to the design of an asteroid tour and to explore launch opportunities to Mars. en_US
dc.description.sponsorship NASA/JPL en_US
dc.language.iso en_US en_US
dc.publisher Pasadena, CA: Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2016 en_US
dc.title Spiral Lamber's problem with generalized logarithmic spirals en_US
dc.type Preprint en_US


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