5.5 m×4.0 m航空声学风洞闭口试验段研制

The development of the movable solid wall test section for the 5.5 m×4.0 m acoustic wind tunnel

针对5.5 m×4.0 m航空声学风洞可移动闭口试验段的设计指标和功能需求特点,论述了闭口试验段的总体结构方案,并围绕闭口试验段框架刚度、强度和模态开展了数值计算,对其定位与锁紧、提升机构、可更换下壁板和开度可调侧壁板等进行了详细研究,同时对加工和装配过程中的关键问题提出了具体解决措施。本文研究内容对同类型大型航空声学风洞闭口试验段设计具有一定参考价值。

According to the design indexes and functional requirements of the movable solid wall test section for the 5.5 m×4.0 m acoustic wind tunnel,this report presents the design project of overall scheme.The simulation calculation is carried out for the strength,stiffness and mode of the frame in the movable solid wall test section.The key technologies of positioning and locking,lifting mechanism,replaceable lower wall panel and adjustable opening side wall panel are studied in detail.At the same time,specific solutions are provided for the key problems in its processing and assembly process.The above research contents have important reference value for the design of the closed test section of the large acoustic wind tunnel of the same type.