NDLI: F/A-18A testing of flight control system reversion to mechanical backup

Content Provider	IEEE Xplore Digital Library
Author	Girard, M.
Copyright Year	2000
Description	Author affiliation: Aerosp. Eng. Test Establ., Cold Lake, Alta., Canada (Girard, M.)
Abstract	The F/A-18 incorporates a digital fly-by-wire primary flight control system (FCS). An emergency mechanical backup/linkage to the horizontal stabilators (stabs) is provided in the event of a major FCS failure. Unfortunately, mechanical backup (MECH) mode reversion incidents have increased dramatically in recent years. A flight test program was performed to identify MECH reversion trigger mechanisms and identify a minimum single engine power setting (RPM) above which reversion was improbable, To do so required forcing in-flight MECH reversions while operating single engine. This was achieved by inducing substantial hydraulic demand through cycling the control stick and/or ancillary equipment such as flaps and landing gear. Risks associated with attempting to force the aircraft into an emergency mode with vigorous flight control inputs while single engine are addressed in this paper along with the risk mitigation, test method, conclusions and lessons learned.
Starting Page	21
Ending Page	27
File Size	639714
Page Count	7
File Format	PDF
ISBN	0780358465
ISSN	1095323X
DOI	10.1109/AERO.2000.878209
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2000-03-25
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	System testing Aerospace control Engines Hydraulic systems Valves Hydraulic actuators Content addressable storage Aerospace testing Aircraft propulsion Control systems
Content Type	Text
Resource Type	Article
Subject	Aerospace Engineering Space and Planetary Science

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