Figure 3

Schematic diagram of the seal head experimental set-up. To test different contralateral angles of impact, the vortex cannon is rotated around the head in between measurements. \(\theta =\) 0\(^\circ\)–45\(^\circ\).

Schematic diagram of the seal head experimental set-up. To test different contralateral angles of impact, the vortex cannon is rotated around the head in between measurements. \(\theta =\) 0\(^\circ\)–45\(^\circ\).