Utilizing A Common Model ArchitectureFor The Simulation Of On-Orbit Human Spaceflight Operations

摘要

Advances in computing and simulation technology duringrnthe 1980’s promoted the development of multiplernsimulations for on-orbit human spaceflight operationsrnat the National Aeronautics and Space Administrationrn(NASA) Johnson Space Center (JSC). By the latern1980’s, it became increasingly clear that redundancyrnrisked leading to inefficiencies in dissemination and incorporationrnof models across simulations, institutionalrnorganizations, and spaceflight programs. Software developmentrntools, such as the Trick Simulation Environment,rnbegan to emerge providing a generalized frameworkrnfor the development, integration, and operation ofrnsimulations. Throughout the 1990’s, engineering, operations,rnand training simulations began to migrate tornTrick in order to take advantage of a common simulationrnenvironment.rnDue to forecasted reductions in funding to the Shuttlernand International Space Station (ISS) programs in thernearly 2000’s, the common framework that arose fromrnthis simulation migration was formalized as the CommonrnModel Architecture (CMA). The CMA was establishedrnin order to further reduce redundancy, while promotingrnmodel sharing and enhancing model integrity. Arnminimal set of standards for data flows, functional interactions,rnand model organization based on Trick wererndefined for those features found to be most importantrnin facilitating model interaction. Model-providing organizationsrnwithin NASA JSC took ownership of modelsrnfor their specific areas of expertise, and agreements werernreached on common model sharing and usage.rnThis paper describes the evolution of commonaltyrnenabled by the Trick Simulation Environment at JSCrnleading to the CMA, the standards defined by the CMA,rna recent CMA simulation example, and potential applicationrnof the CMA to NASA’s new Exploration program.