A demonstration of a retrofit architecture for intelligent control and diagnostics of a turbofan engine

Jonathan S. Litt, James A. Turso, Neerav Shah, T. Shane Sowers, A. Karl Owen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

A retrofit architecture for intelligent turbofan engine control and diagnostics that changes the fan speed command to maintain thrust is proposed and its demonstration in a piloted flight simulator is described. The objective of the implementation is to increase the level of autonomy of the propulsion system, thereby reducing pilot workload in the presence of anomalies and engine degradation due to wear. The main functions of the architecture are to diagnose the cause of changes in the engine's operation, warning the pilot if necessary, and to adjust the outer loop control reference signal in response to the changes. This requires that the retrofit control architecture contain the capability to determine the changed relationship between fan speed and thrust, and the intelligence to recognize the cause of the change in order to correct it or warn the pilot. The proposed retrofit architecture is able to determine the fan speed setting through recognition of the degradation level of the engine, and it is able to identify specific faults and warn the pilot. In the flight simulator it was demonstrated that when degradation is introduced into an engine with standard fan speed control, the pilot needs to take corrective action to maintain heading. Utilizing the intelligent retrofit control architecture, the engine thrust is automatically adjusted to its expected value, eliminating yaw without pilot intervention.

Original languageEnglish (US)
Title of host publicationCollection of Technical Papers - InfoTech at Aerospace
Subtitle of host publicationAdvancing Contemporary Aerospace Technologies and Their Integration
Pages21-38
Number of pages18
StatePublished - Dec 1 2005
EventInfoTech at Aerospace: Advancing Contemporary Aerospace Technologies and Their Integration - Arlington, VA, United States
Duration: Sep 26 2005Sep 29 2005

Publication series

NameCollection of Technical Papers - InfoTech at Aerospace: Advancing Contemporary Aerospace Technologies and Their Integration
Volume1

Other

OtherInfoTech at Aerospace: Advancing Contemporary Aerospace Technologies and Their Integration
Country/TerritoryUnited States
CityArlington, VA
Period9/26/059/29/05

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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