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Targeting Low-Energy Ballistic Lunar TransfersNumerous low-energy ballistic transfers exist between the Earth and Moon that require less fuel than conventional transfers, but require three or more months of transfer time. An entirely ballistic lunar transfer departs the Earth from a particular declination at some time in order to arrive at the Moon at a given time along a desirable approach. Maneuvers may be added to the trajectory in order to adjust the Earth departure to meet mission requirements. In this paper, we characterize the (Delta)V cost required to adjust a low-energy ballistic lunar transfer such that a spacecraft may depart the Earth at a desirable declination, e.g., 28.5(white bullet), on a designated date. This study identifies the optimal locations to place one or two maneuvers along a transfer to minimize the (Delta)V cost of the transfer. One practical application of this study is to characterize the launch period for a mission that aims to launch from a particular launch site, such as Cape Canaveral, Florida, and arrive at a particular orbit at the Moon on a given date using a three-month low-energy transfer.
Document ID
20100031711
Document Type
Conference Paper
External Source(s)
Authors
Parker, Jeffrey S. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
August 25, 2013
Publication Date
May 13, 2010
Subject Category
Lunar and Planetary Science and Exploration
Meeting Information
American Astronautical Society (AAS) George H. Born Symposium(Boulder, CO)
Distribution Limits
Public
Copyright
Other
Keywords
Low-energy transfers
Moon
Earth