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The experimental setup at our wind tunnel:
We conducted our experiments in an open circuit wind tunnel with a nose opening of 1.2 meters diameter.
The aerofoils used are 70 cm long and 20 cm deep, (this will make for an aspect ratio of 3.5).
The experiments I will tell you about today were those run with a NACA 2412 Reynolds Number of 130’000.
The aerofoil was hung on three thin wires that connected to an electronic balance for measuring lift.
A second electronic balance for measuring drag was connected via rods and wires to the trailing edge of the aerofoil.
For measuring the pressure distribution a scanivalve and a baratron pressure sensor was used.