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Manual Manipulation of Engine Throttles for Emergency Flight Control
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TLDR
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.Abstract:
If normal aircraft flight controls are lost, emergency flight control may be attempted using only engines thrust. Collective thrust is used to control flightpath, and differential thrust is used to control bank angle. Flight test and simulation results on many airplanes have shown that pilot manipulation of throttles is usually adequate to maintain up-and-away flight, but is most often not capable of providing safe landings. There are techniques that will improve control and increase the chances of a survivable landing. This paper reviews the principles of throttles-only control (TOC), 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.read more
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Dissertation
Integral sliding mode fault tolerant control schemes with control allocation
TL;DR: New integral sliding mode control allocation schemes for FTC are proposed, which have the potential to maintain the nominal fault free performance for the entire system response, in the face of actuator faults and even complete failures of certain actuators.
Proceedings ArticleDOI
The Effect of Modified Control Limits on the Performance of a Generic Commercial Aircraft Engine
TL;DR: In this paper, the effect of modifying the control limits of an aircraft engine to obtain additional performance was studied, focusing on the tradeoff between enhanced performance and risk of either incurring a mechanical engine failure or compromising engine operability.
Proceedings ArticleDOI
Flight Simulator Evaluation of Enhanced Propulsion Control Modes for Emergency Operation
TL;DR: The results showed that improvement in all aspects is possible with these enhanced propulsion control modes, but the way in which they are initiated and incorporated is important for pilot comfort and perceived benefit.
Proceedings ArticleDOI
Application and Evaluation of Control Modes for Risk-Based Engine Performance Enhancements
TL;DR: In this article, the authors present an application of these risk-based control modes to a combined engine/aircraft model, and evaluate their effects on a generic airframe, and demonstrate their usefulness during emergency flight situations.
References
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Journal ArticleDOI
Out of Control
TL;DR: In contrast, the authors argue that there are many everyday contexts in which we hold agents responsible for their acts even though considerations unrelated to determinism strongly suggest that they cannot help performing them.
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.
Development and Flight Test of an Emergency Flight Control System Using Only Engine Thrust on an MD-11 Transport Airplane
TL;DR: An emergency flight control system that uses only engine thrust, called the propulsion-controlled aircraft (PCA) system, was developed and flight tested on an MD-11 airplane as discussed by the authors.