Abstract: It has been reported that two-dimensional self-streamlining flexible walled testsection eliminates the top and bottom wall interfereiice effects on large blockage aerofoiltesting.The iterative stratd.gies of subsonic flow test and transonic flow test and one stepmethod for high subsonic test was discribed.The experimentaI tests have been performed toverify the methods. The results show that theeffects of wall interference can be eliminatedby the methods effectively on iarge blockage aerofoil in twodimension...