Accession Number : ADA190681

Title :   A System Status Monitor for the National Aerospace Plane.

Descriptive Note : Master's thesis,

Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING

Personal Author(s) : Baumann, James M

PDF Url : ADA190681

Report Date : Dec 1987

Pagination or Media Count : 129

Abstract : The purposes of this study were to develop a model for an in-flight diagnostic system that could be applied to the National Aerospace Plane, and to implement a computer program to demonstrate the feasibility of that model as a basis for a system status monitor. The diagnostic system model which was developed features a double hierarchy structure, one for the aircraft functions to be diagnosed, and another for the diagnostic functions to be performed. The hierarchical nature of both the system knowledge and the functions that use the knowledge allow decomposition of the diagnostic task into relatively independent and manageable parts. The demonstration program which was developed includes a subset of the diagnostic system model. This program was implemented in Zetalisp on a Symbolics 3600 computer. It will simulate monitoring the dynamic performance parameters of an aircraft's subsystems, report any readings that fall outside of predetermined limits, reason about components responsible for the fault, display to the aircrew the other aircraft functions which may be affected by the component failure, and recommend actions that may remedy the fault situation.

Descriptors :   *AEROSPACEPLANES, *MONITORING, AIRCRAFT, COMPUTER PROGRAMS, DECOMPOSITION, DEMONSTRATIONS, DYNAMICS, FAILURE, FAULTS, FLIGHT CREWS, HIERARCHIES, INFLIGHT, MODELS, ARTIFICIAL INTELLIGENCE, COMPUTER AIDED DIAGNOSIS, THESES

Subject Categories : Research and Experimental Aircraft

Distribution Statement : APPROVED FOR PUBLIC RELEASE