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Accession Number:
AD0481266
Title:
A COMPARISON BETWEEN STEEPEST ASCENT AND DIFFERENTIAL CORRECTION OPTIMIZATION METHODS IN A PROBLEM OF BOLZA, WITH A METHOD FOR OBTAINING STARTING VALUES FOR THE ADJOINT VARIABLES FROM A NOMINAL PATH
Corporate Author:
NAVAL POSTGRADUATE SCHOOL MONTEREY CA
Report Date:
1963-01-01
Abstract:
Two methods of treating the problem of maximum range atmospheric reentry for an orbiting lifting glider are compared. A comparison of results is made, showing large differences in control variable history, and longer range for the path obtained by differential corrections. The problem was characterized by a sharp ridge in the domain of the starting values of the adjoint variables and the effect of this on the convergence of both methods is discussed. Finally, the difficulty of choosing initial approximations for the starting values of the adjoint variables is discussed, and a method is presented for obtaining these from a nominal path as the first step in the computer routine.
Descriptive Note:
Master's thesis
Pages:
0061
Distribution Statement:
Approved for public release; distribution is unlimited.
File Size:
2.71MB
