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Simulation Requirements to Support the Development of a Fault Tolerant Avionic System,
NORTHROP CORP HAWTHORNE CA AIRCRAFT DIV
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This paper presents the Northrop Avionics simulation package which was designed to support the development of fault tolerant avionic systems. Described is the Executive Support System, ESS, package which is presently being used as a development, test and verification tool for F-5G and F-18L avionics models. ESS provides an avionics system designer with a mechanism for developing and testing several avionic core configurations as well as for developing avionic simulation and application modules. ESS consists of an interactive user interface that allows the user to configure the core avionics system as desired. Once the core system has been specified the user is able to specify whether centralized or distributed philosophies are to be used in the system executive. The executive consists of a user definable scheduler, system monitor and system support library. Application and system support software can be developed by the user and exercised by the ESS. In this way the ESS can be easily tailored to various applications and configurations. Since the development phase of any system includes debugging, ESS also provides the user with interactive symbolic debugging capabilities. These capabilities allow the user to examine, modify and monitor all of the simulation variables.
APPROVED FOR PUBLIC RELEASE