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Emergency Flight Control Using Computer-Controlled ThrustPropulsion Controlled Aircraft (PCA) systems are digital electronic control systems undergoing development to provide limited maneuvering ability through variations of individual engine thrusts in multiple-engine airplanes. Provide landing capability when control surfaces inoperable. Incorporated on existing and future airplanes that include digital engine controls, digital flight controls, and digital data buses, adding no weight for additional hardware to airplane. Possible to handle total failure of hydraulic system, depending on how surfaces respond to loss of hydraulic pressure, and broken control cables or linkages. Future airplanes incorporate data from Global Positioning System for guidance to any suitable emergency runway in world.
Document ID
Document Type
Other - NASA Tech Brief
Burcham, Frank W., Jr. (NASA Flight Research Center, Edwards, CA.)
Fullerton, C. Gordon (NASA Flight Research Center, Edwards, CA.)
Stewart, James F. (NASA Flight Research Center, Edwards, CA.)
Gilyard, Glenn B. (NASA Flight Research Center, Edwards, CA.)
Conley, Joseph A. (Ames Research Center)
Date Acquired
August 17, 2013
Publication Date
May 1, 1995
Publication Information
Publication: NASA Tech Briefs
Volume: 19
Issue: 5
ISSN: 0145-319X
Subject Category
Report/Patent Number
Distribution Limits
Work of the US Gov. Public Use Permitted.