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Aeroassisted orbital maneuvering using Lyapunov optimal feedback controlA Liapunov optimal feedback controller incorporating a preferred direction of motion at each state of the system which is opposite to the gradient of a specified descent function is developed for aeroassisted orbital transfer from high-earth orbit to LEO. The performances of the Liapunov controller and a calculus-of-variations open-loop minimum-fuel controller, both of which are based on the 1962 U.S. Standard Atmosphere, are simulated using both the 1962 U.S. Standard Atmosphere and an atmosphere corresponding to the STS-6 Space Shuttle flight. In the STS-6 atmosphere, the calculus-of-variations open-loop controller fails to exit the atmosphere, while the Liapunov controller achieves the optimal minimum-fuel conditions, despite the + or - 40 percent fluctuations in the STS-6 atmosphere.
Document ID
19870063235
Document Type
Conference Paper
Authors
Grantham, Walter J. (Washington State University Pullman, United States)
Lee, Byoung-Soo (Washington State Univ. Pullman, WA, United States)
Date Acquired
August 13, 2013
Publication Date
January 1, 1987
Subject Category
LAUNCH VEHICLES AND SPACE VEHICLES
Report/Patent Number
AIAA PAPER 87-2464
Funding Number(s)
CONTRACT_GRANT: NCA2-191
Distribution Limits
Public
Copyright
Other