基于光固化快速成型技术的测压风洞模型孔道制造与性能评价

传统金属加工制造测压风洞模型存在难度大、周期长、成本高的问题,利用光固化快速成型技术,可以实现测压风洞模型气动外形-内部孔道的一体化成型制造.设计制作了不同孔径、长度的孔道结构模型,对孔道成型质量和孔道结构参数之间以及孔道半径与设计半径之间的关系进行了研究,并对孔道的气密性以及通气性进行了验证.研究得出了可成型的测压模...

Fabrication and Performance Evaluation of Micro-channels in Aircraft Wind-tunnel-models for Pressure Measurements Using Stereolithography

In order to overcome the difficulties with machining the internal channels of a wind tunnel aircraft model for pressure measurements,this paper proposes the use of stereolithography to realize the integrated forming of aerodynamic configurations and internal channels.A series of micro-channels with different diameters and lengths are fabricated,and their forming qualities are examined with an optical microscope system.The diameters of cross-sections are also measured to conform with the radius compensation ...