Method of measuring wind tunnel airfoil, comprising: providing an apparatus (1) testing in wind tunnel, said apparatus (1) test túnelde wind: two walls (2) which form a flow path wind tunnel between them, two elements (4) support arranged to penetrate through said two walls (2), respectively, and not interfere with said two walls (2) and two units (3) measuring load securing said two elements (4) support, respectively; coupling both ends of a model (11) airfoil tested with doselementos (4) support, respectively; generating a flow of a fluid in said flow path wind tunnel; and measuring a load applied to said model (11) airfoil using said two units (3) load measurement, characterized in that an element (5) thin film at each end of said pattern (11) airfoil sticks so that a part of said element (5) thin film sobresalede each said end of said model (11) of aerodynamic along an entire circunferenciaexterna model airfoil surface, that said element (5) thin film has a resistance to said element (5) películadelgada can withstand a pressure of said fluid, and is formed of a material that is elásticamentedeformable, and that said element (5) thin film is provided so that a space is blocked entrecada said end of said model (11) airfoil and one of said two walls (2) directed towards each that WILL said end of said model (11) surface aerodynamics.
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