PDF document and a MATLAB script called ipto_matlab that can be used to design and optimize “patched conic” ballistic interplanetary trajectories between any two planets of our solar system. It can also be used to find two-body trajectories between a planet and an asteroid or comet. A patched-conic trajectory ignores the gravitational effect of both the launch and arrivals planets on the heliocentric transfer trajectory. This technique involves the solution of Lambert's problem relative to the Sun. Patched-conic trajectories are suitable for preliminary mission design. This script uses the SNOPT nonlinear programming (NLP) algorithm to solve this classic astrodynamics problem.
The ipto_matlab MATLAB script also performs a graphical primer vector analysis of the solution. This program feature displays the behavior of the primer vector magnitude and primer derivative magnitude as a function of mission elapsed time in days from departure.
David Eagle (2021). Ballistic Interplanetary Trajectory Design and Optimization (https://www.mathworks.com/matlabcentral/fileexchange/39446-ballistic-interplanetary-trajectory-design-and-optimization), MATLAB Central File Exchange. Retrieved .
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