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Practical aspects of the design of an integrated flight and propulsion control system
Published in Mark B. Tischler, Advances in Aircraft Flight Control, 2018
David J. Moorhouse, Kevin D. Citurs
The second result follows from the previous discussion. With multiple control effectors, or complex requirements, a multivariable technique is preferred with one important qualification – the requirements must be specified a priori. The LQG/LTR technique was very effective in decoupling pitch and airspeed together with a minimum phase flight path response for the precision-landing mode. It is these authors’ contention, however, that modified or additional requirements are more likely to be extracted from the classical process than from a multivariable technique, because of the insight gained by the step-by-step development. The lateral and directional axes of the STOL mode were designed classically. Well into the development it was realized that direct sideforce control was the way to meet the crosswind landing requirements. Once the requirement had been formulated, the design could have been completed using either technique.
Flight Training
Published in Mark S. Young, Michael G. Lenné, Simulators for Transportation Human Factors, 2017
The view that high-fidelity simulation is required for training transfer is predicated upon a behaviourist view of learning, with the student being regarded principally as a stimulus response mechanism (Gagne 1954). However, the cognitive perspective challenged the necessity for exact similarity between training and operational environments. He suggested that one of the features of simulators is that they may differ from the operational environment by omitting or distorting some elements. There is experimental evidence to support this proposition. The work of Lintern and Garrison (1992) demonstrated that low scene detail was more effective for training crosswind landing techniques than high scene detail.
Takeoff and landing
Published in Mohammad H. Sadraey, Aircraft Performance, 2017
Landing operation is potentially the most dangerous part of a flight; this is confirmed by statistical reports. Typical reasons for this danger are crosswind landing, failure of landing gear for extension, flight traffic, and bad weather. For these reasons, some aircraft may have to abort landing at the planned airport and change their destinations. The pilot must reduce aircraft speed during landing as much as possible to ensure safe landing and reduce the possibilities of a mishap. A low speed during touchdown leads to fewer casualties and fewer consequences, should a crash happens during landing.
Control parameter tuning for aircraft crosswind landing via multi-solution particle swarm optimization
Published in Engineering Optimization, 2018
Qi Bian, Brett Nener, Xinmin Wang
In this article, an improved multi-group, swarm-based optimization method that can find multiple solutions is presented for flight control system parameter optimization. Two modifications were applied to refine the structure of the algorithm and improve the computational efficiency. Comparative simulations of the proposed method with two other methods were conducted and these showed that the proposed method had the fastest convergence rate. Using the proposed method, the optimized lateral flight control system exhibited strong robustness to crosswind during the landing process and had the lowest output disturbances against the crosswind of the three methods. The aircraft automatic landing system was tested under a variety of crosswind circumstances and the outcomes showed that the aircraft was able to be fully competent with the crosswind landing mission.