23 三次元衝撃波の放電を用いる新しい可視化法(第3報:極超音速飛翔体周りに生じる衝撃波の可視化例)

抄録

This paper describes a new method for visualizing three-dimensional shock shapes around hypersonic vehicles by using an electrical discharge. The method is based on the following ideas: When an electrical discharge is generated across a shock wave, the shock wave can be seen as a dark portion in the electrical discharge. The three-dimensional shock shape can be visualized by taking a discharge photograph in the rear direction of the flow. In this paper, shock shapes around various kinds of hypersonic vehicles were visualized. Those visualized results prove that the present method using the electrical discharge is useful for visualizing three-dimensional shock shapes.