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Prins, J.J.M. (author)The increasing power of on-board processors allows more freedom in the design and operation of reaction wheel control systems. This report discusses several performance and implementation aspects of the operation of wheel systems which have their own internal feedback control system. A model following control concept is found to be superior. The...report 1982
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Erkelens, L.J.J. (author), Simons, J.L. (author)This report deals with determining a hypothetic control system which provides improved rigid body and structural mode damping of a flexible aircraft in order to improve the riding qualities and to minimize the wing bending moment during flights in turbulence. The equations of motion used in the computations are related to a high' performance...report 1980
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Wewerinke, P.H. (author)The outside scene is often an important soiirce of information for manual control tasks. In the context of aircraft control the most important example is the visual approach scene. This study deals with modelling the visual scene perception process on the basis of linear perspective geometry and the relative motion cues and investigates its...report 1978
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van Woerkom, P.T.L.M. (author)The attitude motion of interplanetary, spinning spacecraft under the influence of solar radiation and optimal thrusting, is investigated. A general model is formulated to describe the forces and torques exerted on the spacecraft due to solar radiation. The model is compared with model! available in the large body of literature on the subject. It...report 1978
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Wewerinke, P.H. (author)The study described in this report was aimed at assessing the potentials of the optimal control model structure to predict the important characteristics of realistic operational helicopter missions. The theoretical and experimental results indicate that the optimal control model succesfully predicts the best attainable (rather than the average)...report 1977
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Boerstoel, J.W. (author)In this study, an algorithm for the computational design of supercritical shock-free aerofoils is developed and analyzed with hodograph theory. Such an algorithm may be based on the combination of two approaches for the construction of solutions of the flow equations for shock-free transonic flow. In the first approach, such solutions are...report 1977
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Wewerinke, P.H. (author)This report deals with a theoretical and experimental program concerning human monitoring and and control behaviour. A model for multivariable monitoring (an automatic approach) was tested against experimental data. Apart from monitoring, simultaneously monitoring and manual flight director control was studied to determine the interference...report 1976
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Wewerinke, P.H. (author)This paper deals with a theoretical framework describing human operator's participation in manned vehicle systems. Herewith, the human operator is described in terms commensurate with those used for other system elements, which is desirable because of the complex interaction between human functioning and his task environment (e.g. cockpit i...report 1976
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van Woerkom, P.T.L.M. (author)The document contains a general theory towards the observation and optimal control of disturbed, target following aerospace systems. Disturbed, target following aerospace systems eire defined as aerospace systems that are designed to track a moving target system, while they are subjected to external, time-varying disturbances. The first five...report 1976
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Wewerinke, P.H. (author)A theoretical and experimental program was conducted to study human response characteristics in a variety of single- and dual-axis control situations. The object was to build and support a human control effort model. The aspect of human controller's effort is indispensable for a complete description and prediction of human operator behavior and...report 1974