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Computer-Aided System Engineering and Analysis (CASE/A) Programmer's Manual, Version 5.0The Computer Aided System Engineering and Analysis (CASE/A) Version 5.0 Programmer's Manual provides the programmer and user with information regarding the internal structure of the CASE/A 5.0 software system. CASE/A 5.0 is a trade study tool that provides modeling/simulation capabilities for analyzing environmental control and life support systems and active thermal control systems. CASE/A has been successfully used in studies such as the evaluation of carbon dioxide removal in the space station. CASE/A modeling provides a graphical and command-driven interface for the user. This interface allows the user to construct a model by placing equipment components in a graphical layout of the system hardware, then connect the components via flow streams and define their operating parameters. Once the equipment is placed, the simulation time and other control parameters can be set to run the simulation based on the model constructed. After completion of the simulation, graphical plots or text files can be obtained for evaluation of the simulation results over time. Additionally, users have the capability to control the simulation and extract information at various times in the simulation (e.g., control equipment operating parameters over the simulation time or extract plot data) by using "User Operations (OPS) Code." This OPS code is written in FORTRAN with a canned set of utility subroutines for performing common tasks. CASE/A version 5.0 software runs under the VAX VMS(Trademark) environment. It utilizes the Tektronics 4014(Trademark) graphics display system and the VTIOO(Trademark) text manipulation/display system.
Document ID
19960054376
Acquisition Source
Marshall Space Flight Center
Document Type
Technical Memorandum (TM)
Authors
Knox, J. C. (NASA Marshall Space Flight Center Huntsville,AL United States)
Date Acquired
September 6, 2013
Publication Date
September 1, 1996
Subject Category
Computer Programming And Software
Report/Patent Number
NAS 1.15: 108517
NASA-TM-108517
Accession Number
96N36544
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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