Abstract: A wind tunnel test model (1) includes a half model portion (3) that simulates a fuselage portion of an airframe with a single wing and a supporting apparatus (5) that supports the half model portion rotatably about a central axis. The supporting apparatus has a horizontal cross-sectional shape that is approximately the same as or similar to that of the fuselage portion (7) and extends rearward of the fuselage portion, includes, toward its rear end, a fixing portion (11) that fixes the half model portion to a wind tunnel test apparatus side, and includes, within a housing, a torsional rigidity imparting unit.

Abstract: A test section for a wind-tunnel testing apparatus has a mounting section that mounts an automobile along the internal floor surface of a wind tunnel. Tests are conducted by applying an airflow blown in the wind tunnel to the automobile mounted on the mounting section. The test section includes a slit that is disposed on the floor surface located on the upstream side of the mounting section with respect to the airflow direction so as to extend in the intersecting direction intersecting the airflow direction and that sucks in a portion of the airflow near the floor surface, and lateral suction portions, disposed at both sides of the mounting section, that suck in the incoming airflows R flowing in from the sides of the mounting section.

Abstract: Provided is a test section for a wind-tunnel testing apparatus that is capable of suppressing the influences of a boundary layer on the floor surface and incoming airflows from the sides, and that is capable of measuring aerodynamic forces closer to the those actually occurring. A test section for a wind-tunnel testing apparatus having a mounting section that mounts an automobile along the internal floor surface of a wind tunnel, tests being conducted by applying an airflow blown in the wind tunnel to the automobile mounted on the mounting section, includes a slit that is disposed on the floor surface located on the upstream side of the mounting section with respect to the airflow direction so as to extend in the intersecting direction intersecting the airflow direction and that sucks in a portion of the airflow near the floor surface; and lateral suction portions, disposed at both sides of the mounting section, that suck in the incoming airflows R flowing in from the sides of the mounting section.