Abstract
The subject of present investigation is the diffraction in such ranges of angles between the fronts of weak incident pressure jump and of an oblique compression shock attached to a wedge of finite opening angle in which the intersection of these occurs at the distorted section of the jump. On the side of smaller angles these ranges border on regions of possible regular interaction between two shocks coming from opposite directions [1], while on the side of greater angles these border of regions of shock waves moving in the same direction, which admit uniform streams in the neighborhood of intersection of fronts [2, 3]. The resulting boundary value problem has much in common with the similar problem of regular counter-interaction which was considered in [4]. In that paper, as in the present one, the method of analysis is related to the problem of perturbations of a uniform stream behind a plane shock front considered by Lighthill [5, 6]. The effect of triple shock configuration is represented by the combined dynamic singularity at the triple point. Some of its properties were predicted by Landau [7]. The particular case of motion of a slender wedge at hypersonic speed was considered by Inger [8, 9]. However his analysis contains statements which contradict existing concepts.
Published Version
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