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Direct Multiple Shooting Optimization with Variable Problem ParametersTaking advantage of a novel approach to the design of the orbital transfer optimization problem and advanced non-linear programming algorithms, several optimal transfer trajectories are found for problems with and without known analytic solutions. This method treats the fixed known gravitational constants as optimization variables in order to reduce the need for an advanced initial guess. Complex periodic orbits are targeted with very simple guesses and the ability to find optimal transfers in spite of these bad guesses is successfully demonstrated. Impulsive transfers are considered for orbits in both the 2-body frame as well as the circular restricted three-body problem (CRTBP). The results with this new approach demonstrate the potential for increasing robustness for all types of orbit transfer problems.
Document ID
20090001234
Acquisition Source
Johnson Space Center
Document Type
Conference Paper
Authors
Whitley, Ryan J. (NASA Johnson Space Center Houston, TX, United States)
Ocampo, Cesar A. (Texas Univ. Austin, TX, United States)
Date Acquired
August 24, 2013
Publication Date
January 1, 2009
Subject Category
Mathematical And Computer Sciences (General)
Meeting Information
Meeting: 47th AIAA Aerospace Sciences Meeting
Location: Florida
Country: United States
Start Date: January 5, 2009
End Date: January 8, 2009
Sponsors: American Inst. of Aeronautics and Astronautics
Distribution Limits
Public
Copyright
Public Use Permitted.

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