Active Failure Management for Aircraft Control Recovery

Abstract

This paper describes development and performance analysis of an active failure management system for the commuter and business aircraft control recovery. System failures are detected and isolated using a hierarchy of techniques that is chosen to ensure minimal disruption of operations and to minimize the number of false alarms. Successive layers in the diagnostics hierarchy are increasingly invasive. Higher layers will be invoked only when lower layers indicate a potential problem. Once a failure has been detected and identi ed, the failure can be accommodated in several ways, from passive pilot cueing to active autopilot recon guration. This paper also describes some preliminary pilot cueing strategies and displays to alert pilots to true failures, provide guidance on recommended responses, and inform the pilot of any recon gurations. 1