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小型 低速 直流 风洞 总体 整体 以及 结构设计 全套 cad 图纸

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摘要：该文论述了一个小型低速直流式风洞的总体和结构设计详情。该课题设计是基于空气动力学基础上进行小型低速直流式风洞的设计，且偏重于结构设计。该设计的主要目标是设计出一个合理可行的、简单适用而且结构紧凑占地面积小的小型低速直流式风洞。在老师悉心指导下，查阅、翻译了许多国内外相关资料，一座切实可行的低速直流式风洞最终定型。该设计的风洞，其试验段为闭口式的，这是根据国内外常规低速风洞的设计经验，为了减少试验段能量损失，降低风洞的运转功率而定的。试验段与扩散段连接出设有压力平衡缝。试验段的天平根据机械天平的设计经验采用自行设计的机械天平，来测量飞机模型的升力和阻力。试验段规格为 1.80.70.5（m3），设计风速为 525m/s，设计的风扇功率为 5kw,采用的额定功率 8kw 定制的电机，可实现无级调速。风洞的第二扩散段段及第二扩散段设计布置在试验段等段的后方，既实现了直线布局，又保证了气流的品质。采用这种布局，主要是考虑到水平式直流式风洞的占地长度过大，而该风洞能显著地减少风洞设备的占地面积。经过设计分析绘制总图，确定该风洞总体尺寸为：13m3m。通过本设计，可以详细地了解到低速直流式风洞的结构及运行特点。关键字：风洞 无极调速 风洞天平 直流式The Structure Design Of small perpendicular plane direct-current low-speed wind tunnelStudent name：Chen yong Class：050313Supervisor： Jang shan yuanAbstract：This article elaborated small perpendicular plane direct-current low-speed wind tunnel structural design details. This graduation project is precisely carries on the small backflow low-speed wind tunnel based on the aerodynamics foundation in the structural design research. This design essential target is designs one reasonably feasible, simply is suitable moreover the structure compact area small small perpendicular plane wind tunnel.In teacher under devotedly instruction, the consult, has translated many domestic and foreign correlation datas, a practical and feasible perpendicular plane backflow low-speed wind tunnel finally finalizes. This design wind tunnel, its test section for closed type, this is according to the domestic and foreign convention low-speed wind tunnel design experience, in order to reduce the test section energy to lose, reduces the wind tunnel the operating power to decide. The test section and the divergent section connect are equipped with the pressure balance seam. The test section balance basis mechanical balance design experience uses the mechanical balance which independently designs, air mapping plane model lifting force and resistance. The test section specification is 1.80.70.5(m3), the design wind speed is 525m/s, the design ventilator power is 5kw, uses the rated power for 8kw tailor-made electrical machinery, may realize the stepless speed regulation. The wind tunnel second divergent section and the second change-over portion design arrangement in section and so on test section place above, namely has realized the vertical form layout. Uses this kind of layout, mainly is considers the level -like circular wind tunnel the area oversized, but this wind tunnel can obviously reduce the wind tunnel installation the area. After the design analysis plan assembly drawing, determined this wind tunnel overall size is: 13m3m. Through the design detail that vertical plane back to the s