Patent ID: 8359916

Claim:
A method of wind tunnel measurement of airfoil, comprising: providing a wind tunnel test apparatus, said wind tunnel test apparatus including: two walls configuring a wind tunnel flow path therebetween, two supporting members arranged to penetrate through said two walls, respectively, and not to interfere with said two walls, and two load measuring units holding said two supporting members, respectively; coupling both ends of an airfoil model under test with the two supporting members, respectively; generating a flow of a fluid in said wind tunnel flow path; and measuring a load applied to said airfoil model by using said two load measuring units, wherein a thin film member is stuck on each end of said airfoil model so that a part of said thin film member protrudes from said each end of said airfoil model along an outer circumference throughout an entire circumference, wherein said thin film member has a strength at which said thin film member enables to endure a pressure of said fluid, and is formed of a material which is elastically deformable, and wherein said thin film member is provided so that a gap between said each end of said airfoil model and one of said two walls facing to said each end of said airfoil model is blocked.