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高速风洞静弹性模型设计和制造是静弹性风洞试验的一个关键。为解决模型设计周期长、制造费用高等问题,提出了一种基于立体光固化快速成型面向高速风洞大展弦比机翼静弹性模型研制方法。基于机翼刚度分布相似参数,采用机翼钢梁骨架和树脂蒙皮组合结构,通过优化结构尺寸完成静弹性模型结构设计;使用机械加工和快速成型技术完成模型制造,并通过地面刚度试验对加工模型进行了刚度分布验证。风洞试验结果表明:基于立体光固化成型技术设计和制造的静弹性风洞试验模型工程实用、可行,与传统静弹性模型研制过程相比,具有研制周期短、成本低而且不存在因填充物带来附加刚度的显著优势。
The design and manufacture of high-speed wind tunnel static elasticity model is one of the key points of static elasticity wind tunnel test. In order to solve the problem of long model design cycle and high manufacturing cost, a method of developing the static elastic model of large aspect ratio wing for high speed wind tunnel based on stereolithography was proposed. Based on similar parameters of the wing stiffness distribution, wing steel beam skeleton and resin skin composite structure are adopted, and the structure design of the static elasticity model is completed by optimizing the structure size. The mechanical manufacturing and rapid prototyping technology are used to manufacture the model and the ground stiffness test is used to process The model has been verified by stiffness distribution. The wind tunnel test results show that the static elasticity wind tunnel test model designed and manufactured based on the stereolithography technology is practical and feasible. Compared with the traditional static elasticity model development process, the static elasticity wind tunnel test model has the advantages of short development cycle, low cost, Significant advantage of additional stiffness.