METHOD FOR REDUCING LOAD ON MODEL AT STARTING/STOPPING WIND TUNNEL, AND WIND TUNNEL THEREFOR

摘要

PROBLEM TO BE SOLVED: To provide a method for reducing loads exerted on models at starting and stopping a wind tunnel, which uses a simple mechanism to satisfactorily reduce the impact loads exerted on models at starting and stopping the wind tunnel.;SOLUTION: Protrusions 30u and 30L are provided for a wall surface of the wind tunnel separated by L=1200 mm from the model 10 on the upstream side of the wind tunnel, in such a way as to be capable of being housed in the wall surface of the wind tunnel, in a blowout supersonic wind tunnel having a 1 m×1 m square-form cross section of a measurement section. The protrusions 30u and 30L are provided, in such a way as to slide and move perpendicular to the wall surface of the wind tunnel so that their surfaces can form a surface of the wall surface of the wind tunnel, when being housed. The outer dimensions of a protruding section of the protrusions 30u and 30L are (width 800 mm)×(height 30 mm)×(depth 80 mm).;COPYRIGHT: (C)2011,JPO&INPIT