This paper presents the methods of freeflight spin test and rotation balance test in vertical wind tunnel, the design of test model is briefly expounded.
介绍了立式风洞自由飞尾旋试验和旋转天平试验的方法，简述了试验模型的设计。
2
The model freeflight method in wind tunnel is a non-intrusive way to measure the aerodynamic characteristics of a model.
风洞模型自由飞是一种无支杆干扰的非接触式气动特性测量方法。
3
Each pavilion patron will have a chance to win a freeflight in the vertical wind tunnel.