Flowfield around Hypersonic MESUR Capsule

概要

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The flowfield around a model of the Mars Environmental Survey (MESUR) Pathfinder probe traveling at a speed of Mach 10 was investigated by the electrical discharge method. The shock shape ahead of the capsule was visualized using a technique for visualizing 3-D shock shapes, then the streamline following the shock wave was visualized using a technique for observing streamlines crossing a shock wave. Subsequently, the expansion wave from the capsule shoulder was visualized by applying a technique for observing density changes. The flow pattern behind the capsule was then visualized by applying a technique for observing streamlines near a model surface. Finally, the flow pattern at a small angle of attack near the capsule shoulder was compared with one at zero angle of attack. These experiments qualitatively demonstrate spatial flow structures before and behind the hypersonic re-entry capsule. The techniques used in these experiments, known as the electrical discharge method, enable experimental investigations of spatial flow structures around the hypersonic re-entry capsule, which to date have been quite difficult to perform. These experimental results would be useful in comparing and verifying the results obtained by numerical calculations.
福山大学の論文