Orthogonal shear stress measurement probe assembly for boundary layer flow
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机译:正交剪切应力测量探头组件,用于边界层流动
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摘要
An orthogonal shear stress measurement probe assembly is provided for meaements away from a solid surface or a vehicle wall. The assembly includes a plurality of micron-sized floating element drag sensors mounted on a 2 mm stainless steel needle. The needle is in turn supported by a streamlined probe which provides both a support for the needle-drag sensor assembly and a conduit for electrical lead. The electrical leads connect the drag sensing elements, which contain piezo- resistive elements, to an external portion of a bridge. These resistive elements form one- half of a bridge, the remaining bridge elements, amplifiers, read-out circuits and power supply are located outside the probe.
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