| タイトル | An Automatic Medium to High Fidelity Low-Thrust Global Trajectory Toolchain; EMTG-GMAT |
| 本文（外部サイト） | http://hdl.handle.net/2060/20150001277 |
| 著者（英） | Englander, Jacob A.; Schadegg, Maximillian; Beeson, Ryne T.; Hughes, Steven P. |
| 著者所属（英） | NASA Goddard Space Flight Center |
| 発行日 | 2015-01-11 |
| 言語 | eng |
| 内容記述 | Solving the global optimization, low-thrust, multiple-flyby interplanetary trajectory problem with high-fidelity dynamical models requires an unreasonable amount of computational resources. A better approach, and one that is demonstrated in this paper, is a multi-step process whereby the solution of the aforementioned problem is solved at a lower-fidelity and this solution is used as an initial guess for a higher-fidelity solver. The framework presented in this work uses two tools developed by NASA Goddard Space Flight Center: the Evolutionary Mission Trajectory Generator (EMTG) and the General Mission Analysis Tool (GMAT). EMTG is a medium to medium-high fidelity low-thrust interplanetary global optimization solver, which now has the capability to automatically generate GMAT script files for seeding a high-fidelity solution using GMAT's local optimization capabilities. A discussion of the dynamical models as well as thruster and power modeling for both EMTG and GMAT are given in this paper. Current capabilities are demonstrated with examples that highlight the toolchains ability to efficiently solve the difficult low-thrust global optimization problem with little human intervention. |
| NASA分類 | Astrodynamics; Spacecraft Propulsion and Power |
| レポートNO | GSFC-E-DAA-TN17389 |
| 権利 | Copyright, Distribution as joint owner in the copyright |
