Table 2: Airfoil models used in the experiments (all airfoils have a chord length of 0.235 m and a span width of approximately 0.4 m).

Name Material [Pa s/m2]

Reference Nonporous
Needlona felt SO 2002 Synthetic felt 130,200
Recemat Metal foam 8,200
M–Pore Al 45 ppi Metal foam 1,000