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A time-optimal Space Station reboost guidance strategyA closed-loop guidance strategy for time and fuel optimal reboost of Space Station Freedom is discussed in this paper. The reboost maneuver is formulated as an optimal control problem rather than a parameter optimization problem, the parameters being the thrust switching times. In the present approach the thrust switching structure need not be prescribed a priori to solve the resulting two point boundary value problem. Non-optimality of singular control or intermediate thrust is proved by utilizing the second order Kelley condition or the Generalized Legendre-Clebsch condition. Only a few sets of initial co-states and time-to-go guess values need to be stored on-board for a wide range of reboost scenarios.
Document ID
19950049786
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Kumar, Renjith R.
(Analytical Mechanics Associates, Inc. Hampton, VA, US, United States)
Seywald, Hans
(Analytical Mechanics Associates, Inc. Hampton, VA, US, United States)
Date Acquired
August 16, 2013
Publication Date
January 1, 1993
Publication Information
Publication: In: Spaceflight mechanics, 1993; AAS(AIAA Spaceflight Mechanics Meeting, 3rd, Pasadena, CA, Feb. 22-24, 1993, Parts 1 & 2 . A95-81344
Publisher: American Astronautical Society (Advances in the Astronautical Sciences, Vol. 82, Pts. 1 & 2)
ISSN: 0065-3438
Subject Category
Astrodynamics
Accession Number
95A81385
Funding Number(s)
CONTRACT_GRANT: NAS1-18935
Distribution Limits
Public
Copyright
Other

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