Wind tunnel ventilation: Listen & Download Wind tunnel ventilation .mp3 Error! Change your browser, please! ⇓ Download Air bleed, Air compressor, cylinder pressure ⚠ Suction action of air ⚠ Wind tunnel ventilation ⚠ Mask breathing ⚠ Blower, air broom ⚠ Air pressure ⚠ Air is let through the regulator ⚠ Cut through the air with a gas burner ⚠ Air is bleeding through a hose ⚠ Oxygen balloon ⚠ Rope torsion ⚠ Steam ⚠ ★★★★★