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Development of an expert system for analysis of Shuttle atmospheric revitalization and pressure control subsystem anomaliesThe paper describes the Shuttle Leak Management Expert System (SLMES), a preprototype expert system developed to enable the ECLSS subsystem manager to analyze subsystem anomalies and to formulate flight procedures based on flight data. The SLMES combines the rule-based expert system technology with the traditional FORTRAN-based software into an integrated system. SLMES analyzes the data using rules, and, when it detects a problem that requires simulation, it sets up the input for the FORTRAN-based simulation program ARPCS2AT2, which predicts the cabin total pressure and composition as a function of time. The program simulates the pressure control system, the crew oxygen masks, the airlock repress/depress valves, and the leakage. When the simulation has completed, other SLMES rules are triggered to examine the results of simulation contrary to flight data and to suggest methods for correcting the problem. Results are then presented in form of graphs and tables.
Document ID
19920039154
Document Type
Conference Paper
Authors
Lafuse, Sharon A. (NASA Johnson Space Center Houston, TX, United States)
Date Acquired
August 15, 2013
Publication Date
July 1, 1991
Subject Category
COMPUTER SYSTEMS
Report/Patent Number
SAE PAPER 911363
Distribution Limits
Public
Copyright
Other