Model supporting device for releasing five rigid body freedom degrees of wind tunnel test model

The invention relates to a model supporting device for releasing five rigid body freedom degrees of a wind tunnel test model. The device comprises a plurality of steel cables and a structural hanger, wherein upper and lower end anchor points at the front part of a fuselage are respectively connected with upper and lower wall anchor points of a wind tunnel through upper and lower steel cables at the front end, the upper end anchor point of the fuselage is connected with the hanger on the upper wall of the wind tunnel through two vertical steel cables, anchor points on the two sides of the rear portion of the fuselage are connected with counterweights on the two side walls of the wind tunnel through two rear side steel cables respectively, and the left rear side steel cable and the right rear side steel cable are parallel to the horizontal plane. The model supporting device solves the problem that an existing full-model supporting device for wind tunnel flutter and gust tests cannot release five rigid body free