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Shadowgraph

Within the Transonic Wind Tunnel (TWT) ARA operates a simple Shadowgraph system, which is quick and easy to set-up at short notice. This is a useful extra tool for visualising shocks and recording them as either video or high resolution still images. Other facilities at ARA have highly sensitive Schlieren systems for this purpose but due to optical access restrictions this is not possible within the TWT. The following are images captured using the ARA shadowgraph system.

shadowgraph sequence

Shadowgraph sequence from the ARA TWT