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Investigation of hybrid laminar flow control (HLFC) surfaces

机译:混合层流控制(HLFC)表面的研究

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hybrid laminar flow control (HLFC) is an active drag reduction technique. A delay in transition of the boundary layer from laminar to turbulent flow is usually achieved by the application of suction over the first 10-20/100 of the chord. The design of the suction surface and the chambers underneath the perforated skin represents one of the most significant engineering challenges concerning HLFC. A review of design requirements, candidate materials and drilling methods for the production of the suction surface, is presented. Materials considered include titanium, aluminum and carbon fibre composite. Laser (Excimer or Nd-YAG) and electron beam drilling has been used to produce satisfactory suction panels.
机译:混合层流控制(HLFC)是一种主动减阻技术。通常通过在弦的前10-20 / 100处施加吸力来实现边界层从层流到湍流过渡的延迟。抽吸表面和穿孔皮肤下方的腔室的设计代表了有关HLFC的最重大的工程挑战之一。介绍了用于生产吸力表面的设计要求,候选材料和钻孔方法。考虑的材料包括钛,铝和碳纤维复合材料。激光(准分子或Nd-YAG)和电子束钻孔已用于生产令人满意的吸板。

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