This article describes the successful implementation of a structured UV light field, generated from a modified LCD projector, to excite pressure-sensitive paint (PSP) and measure surface shape simultaneously without the need to compromise the PSP by mechanical degradation of the coating. Using commercially available hardware, results were gathered in a Mach 5 wind tunnel, showing the expected pressure distribution around a cone model with a flare and the surface geometry without any prior knowledge or information. The demonstrated methodology can be used to measure aerodynamic models exhibiting elastic deformation under load during a wind tunnel measurement campaign, providing out-of-plane motions are small. The captured deformation and pressure results can be used to support validation of structural models and correct numerical simulation meshes to the actual shape investigated in the wind tunnel.

本文介绍了一种成功的结构化UV光场的实现方法，该场域是从改良的LCD投影仪产生的，以激发压敏涂料（PSP）并同时测量表面形状，而无需通过涂层的机械降解来破坏PSP。使用市售的硬件，在Mach 5风洞中收集了结果，显示了在没有任何先验知识或信息的情况下，带有喇叭口的圆锥模型周围的预期压力分布和表面几何形状。如果平面外运动较小，则可以使用该论证的方法来测量在风洞测量过程中载荷作用下表现出弹性变形的空气动力学模型。