Pilot simulation tests of propulsion control as backup to loss of primary flight controls for a mid-size jet transport
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1995-12-01
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NTL Classification:NTL-AVIATION-AVIATION;NTL-AVIATION-Aviation Safety/Airworthiness;NTL-SAFETY AND SECURITY-Vehicle Design;
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Abstract:Partial failures of aircraft primary flight-control systems and structural
damages to aircraft during flight have led to catastrophic accidents with
subsequent loss of life. These accidents can be prevented if sufficient
alternate control authority remains which can be used by the pilot to execute
an emergency safe landing. Dryden Flight Research Center (DFRC) investigated
the use of engine thrust for emergency flight control. Using an F-15 aircraft,
NASA DFRC successfully demonstrated in 1993 in a series of 36 flights, including
actual propulsion controlled aircraft (PCA) landings, that throttle control of
engines alone can be used to augment or replace the aircraft primary
flight-control system to safely land the aircraft. NASA DFRC conducted flight
tests in Aug.-Dec. 1995 of the MD-11 jet transport utilizing engine thrust for
backup flight control. A series of three piloted simulation tests have been
conducted at Ames Research Center to investigate propulsion control for safely
landing a mid-size jet transport which has experienced a total primary
flight-control failure. This report describes the concept of a PCA, discusses
pilot controls, displays, and procedures; and presents the results of a series
of three piloted simulation evaluations of the concept by a cross-section of
air transport pilots.
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