Phased-mission analysis for evaluating the effectiveness of aerospace computing-systems

Pedar, A and Sarma, VVS (1981) Phased-mission analysis for evaluating the effectiveness of aerospace computing-systems. IEEE Transactions on Reliability, R-30 . pp. 429-437. ISSN 0018-9529

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Abstract

A model of a distributed fault-tolerant avionic system of a transport aircraft is presented as an example of a phased-mission analysis for aerospace computing systems. The avionic system consists of a flight control, inertial navigation system, radio navigational aids, fuel management, and autolanding system computers. A demand profile for a flight is constructed for fuel efficient flight, constant failure rates for all computers, and each phase having an s-coherent structure. The probabilities of accomplishing desired levels are calculated. An evaluation is made of the bounds of effectiveness for the computing systems, with considerations of model development for a multistate system, an analysis of the system components, and the use of a hazard transform bound. An example is provided which includes a provision for the functions of a failed computer to be carried out by the remaining systems.

Item Type: Journal Article
Additional Information: xA9;1981 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Uncontrolled Keywords: Mathematical models; Computer simulation; Aircraft components; Avionics; Aerospace; Computation; Management; Failure rates; Flight control; Reliability; Construction; Marketing; Demand; Radio; Navigation systems; Aircraft; Hazards; Aerospace systems;Airborne/spaceborne computers13;
Subjects: ASTRONAUTICS > Astronautics (General)
Division/Department: Aerospace Electronics and Controls Division, Aerospace Electronics and Controls Division
Depositing User: Ms. Alphones Mary
Date Deposited: 17 Nov 2005
Last Modified: 24 May 2010 09:39
URI: http://nal-ir.nal.res.in/id/eprint/870

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