Abstract
In lifting surface calculations, assessment of convergence characteristics of number-sequences is a difficult task. A self-monitoring procedure needing no comparison with other schemes would be ideal. Among several kinds of convergence behaviour, the ‘ N − r type’ appears often in our practical, lifting surface, investigations. A formulation is proposed here to achieve automatically and without iteration a specified accuracy. This saves computation time, and may be termed an ‘adaptive method’. A new method of chordwise quadrature, ‘TrTr-NONEQ’, is presented as a model. This model indicates that the general formulation is reasonable. In addition, TrTr-NONEQ exhibits many advantages over other current methods such as those of Wagner, Gauss and Cunningham. Although still lacking theoretical justification, the present method seems to provide a basis for progress.
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