Proceedings ArticleDOI
Emergency flight control using only engine thrust and lateral center-of-gravity offset: a first look
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In this article, the authors discuss principles of flight control using only a wing engine thrust and a lateral center-of-gravity offset, along with the amount of CGY offset capability of some transport airplanes.Abstract:
Normally, the damage that results in a total loss of the primary flight controls of a jet transport airplane, including all engines on one side, would be catastrophic. In response, NASA Dryden has conceived an emergency flight control system that uses only the thrust of a wing-mounted engine along with a lateral center-of-gravity (CGY) offset from fuel transfer. Initial analysis and simulation studies indicate that such a system works, and recent high-fidelity simulation tests on the MD-11 and B-747 suggest that the system provides enough control for a survivable landing. This paper discusses principles of flight control using only a wing engine thrust and CGY offset, along with the amount of CGY offset capability of some transport airplanes. The paper also presents simulation results of the throttle-only control capability and closed-loop control of ground track using computer-controlled thrust.read more
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Book ChapterDOI
Fault Tolerant Flight Control - A Survey
Michel Verhaegen,Stoyan Kanev,Redouane Hallouzi,Colin N. Jones,Jan M. Maciejowski,Hafid Smail +5 more
TL;DR: Control systems are present in every industry, they are used to control chemical reactors, distillation columns, and nuclear power plants, making the authors' life more comfortable and more efficient...until the system fails.
Using Engine Thrust for Emergency Flight Control: MD-11 and B-747 Results
TL;DR: In this paper, the NASA Dryden Flight Research Center has developed a propulsion-controlled aircraft (PCA) system in which computer-controlled engine thrust provides emergency flight control, which can operate without modifications to engine control systems.
Book
Manual Manipulation of Engine Throttles for Emergency Flight Control
TL;DR: In this paper, a history of accidents or incidents in which some or all flight controls were lost, manual TOC results for a wide range of airplanes from simulation and flight, and suggested techniques for flying with throttles only and making a survivable landing.
Journal ArticleDOI
Evaluation of a sliding mode fault-tolerant controller for the El Al incident
TL;DR: In this article, a model reference-based sliding mode control allocation scheme for fault-tolerant control is proposed for the EL-AL flight 1862 scenario, where the flight crew were unaware of the loss of the right engines.
Reconfigurable Flight Control First Year Report
TL;DR: In this paper, the authors present a survey of the state-of-the-art methods for flight control in general and in particular, for the control of a single aircraft.
References
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Development and Flight Evaluation of an Emergency Digital Flight Control System Using Only Engine Thrust on an F-15 Airplane
TL;DR: Results from a 36-flight evaluation showed that the PCA system can be used to safety land an airplane that has suffered a major flight control system failure and was used to recover from a severe upset condition, descend, and land.
Proceedings ArticleDOI
A simulation evaluation of a four-engine jet transport using engine thrust modulation for flightpath control
TL;DR: The use of throttle control laws to provide adequate flying qualities for flight path control in the event of a total loss of conventional flight control surface use was evaluated in this paper, where the results were based on a simulation evaluation by transport research pilots of a B-720 transport with visual display.
Proceedings ArticleDOI
Development and flight test of an augmented thrust-only flight control system on an MD-11 transport airplane
TL;DR: An emergency flight control system using only engine thrust, called Propulsion-Controlled Aircraft (PCA), has been developed and flight tested on an MD-11 airplane as mentioned in this paper.