State Machine Modeling of the Space Launch System Solid Rocket BoostersThe Space Launch System is a Shuttle-derived heavy-lift vehicle currently in development to serve as NASA's premiere launch vehicle for space exploration. The Space Launch System is a multistage rocket with two Solid Rocket Boosters and multiple payloads, including the Multi-Purpose Crew Vehicle. Planned Space Launch System destinations include near-Earth asteroids, the Moon, Mars, and Lagrange points. The Space Launch System is a complex system with many subsystems, requiring considerable systems engineering and integration. To this end, state machine analysis offers a method to support engineering and operational e orts, identify and avert undesirable or potentially hazardous system states, and evaluate system requirements. Finite State Machines model a system as a finite number of states, with transitions between states controlled by state-based and event-based logic. State machines are a useful tool for understanding complex system behaviors and evaluating "what-if" scenarios. This work contributes to a state machine model of the Space Launch System developed at NASA Ames Research Center. The Space Launch System Solid Rocket Booster avionics and ignition subsystems are modeled using MATLAB/Stateflow software. This model is integrated into a larger model of Space Launch System avionics used for verification and validation of Space Launch System operating procedures and design requirements. This includes testing both nominal and o -nominal system states and command sequences.
Document ID
20160000328
Acquisition Source
Ames Research Center
Document Type
Other
Authors
Harris, Joshua A. (Texas A&M System Univ. College Station, TX, United States)
Patterson-Hine, Ann (NASA Ames Research Center Moffett Field, CA United States)
Date Acquired
January 6, 2016
Publication Date
August 30, 2013
Subject Category
Launch Vehicles And Launch OperationsSpacecraft Propulsion And Power
Report/Patent Number
ARC-E-DAA-TN10841
Distribution Limits
Public
Copyright
Public Use Permitted.
Keywords
model-based systems engineeringstate analysisfinite-state machines