Expansion of Check-Cases for 6DOF Simulation

Heather M Koehler; Matthew J Hawkins; Jason R Neuhaus; Jesse Couch; Robert L Bossinger; Kyler Brazukas; Trey Fiebelkorn; Edwin Z Crues; Benjamin W Margolis; Tristan D Hasseler; Justin T Ganiban; Nicholas S Olson; Zu Qun Li; Nathan T Perreau; Timothy Curry; Dane W Erickson; Matthew J Andreini; Zhiqiang Zhou; Bruce Jackson; Robert O Shelton

NASA NTRS · 20240013559

Expansion of Check-Cases for 6DOF Simulation

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Abstract

This is the Appendix containing a description of the solution for Case 1 in the assessment, “Expansion of Check-Cases for 6DOF Simulation”. For cases of spherical gravity, it is possible to provide a two-body solution without recourse to numerical integration and thus it is accurate to machine precision. Python code for a Keplerian Propagator (propagate.py) which produced a reference trajectory for Case 1 is provided in this appendix. There is also code for generating test cases which was used as an independent verification of the propagator. This is a high-level description of the algorithm employed. The documentation of each function includes implementation details, including equations for each task.

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Heather M Koehler, Matthew J Hawkins, Jason R Neuhaus, Jesse Couch, Robert L Bossinger, Kyler Brazukas, Trey Fiebelkorn, Edwin Z Crues, Benjamin W Margolis, Tristan D Hasseler, Justin T Ganiban, Nicholas S Olson, Zu Qun Li, Nathan T Perreau, Timothy Curry, Dane W Erickson, Matthew J Andreini, Zhiqiang Zhou, Bruce Jackson, Robert O Shelton. 2024-10-01. Expansion of Check-Cases for 6DOF Simulation. https://ntrs.nasa.gov/citations/20240013559

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