A model-based design and testing approach for Orion GN&C flight software development
Scott Tamblyn, Joel Henry, Ellis King · 2010
The Orion Crew Exploration Vehicle (CEV) Guidance, Navigation, and Control (GN&C) design and analysis team are developing the onboard GN&C flight software (FSW) algorithms using the Matlab/Simulink tool suite to embrace a Model-Based Development approach to FSW development. Various aspects of this modern approach are described, including software architecture, design approach, and modeling standards using Matlab/Simulink for the GN&C executive and its algorithmic Computer Software Unit (CSU) components. The methods employed for unit-level and closed-loop testing simulation, test environments, and the test and verification of the auto-generated code products are also presented, Modeling benefits, process challenges and lessons learned to date are summarized.