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Summary: American Institute of Aeronautics and Astronautics
092407
1
Multi-Fidelity Trajectory Optimization with Response
Surface-Based Aerodynamic Prediction
Colonno, M. R.1
Stanford University, Palo Alto, California, Zip 94305 and
Space Exploration Technologies, Hawthorne, CA, 90250
Reddy, S.2
Space Exploration Technologies, Hawthorne, California, 90250
and
Alonso, J. J .3
Stanford University, Palo Alto, California, Zip 94305
A methodology for the optimization of general atmospheric trajectories is presented. The
trajectory optimization problem is formulated as a constrained minimization problem then
discretized for use with a Gauss pseudospectral method. Assuming a robust optimizer, the
fidelity of an optimum solution is limited by the accurate prediction of input physics. These
include aerodynamic properties, atmospheric properties, wind velocity and direction, and
mass properties. In addition, the free stream conditions at which aerodynamic simulations
are performed are, in turn, a function of the trajectory and vary with mission. Here, a
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