Title: AERODYNAMIC DERIVATIVES FOR OSCILLATING THREE-DIMENSIONAL WINGS IN TRANSONIC FLOW
Abstract: Some linearized solutions for generalized aerodynamic forces on oscillating three-dimensional wings in transonic flow are presented. Linearized theory is valid whenever the reduced frequency of oscillation is not too low. For the rectangular wing the solution is given as an infinite series in which the solution for the wing of infinite span constitutes the initial term. This series is shown to be convergent for all non-zero aspect ratios and converges very rapidly even for comparatively low aspect ratios. Three terms are found to be sufficient in most practical cases. The numerical calculations have been programmed on a high-speed electronic computer and some results for a wing-aileron combination are given. The results show that three-dimensional effects are very important and, in particular, increase the damping of the rotational degree of freedom of the aileron. Solutions for other planforms are also considered briefly. For triangular wings a special transformation is given which relates the solution to that for a rectangular wing.
Publication Year: 1959
Publication Date: 1959-01-01
Language: en
Type: book-chapter
Indexed In: ['crossref']
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Cited By Count: 1
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