A testing system was designed and implemented to figure out the friction drag of an underwater axisymmetrical vehicle model.
为了研究轴对称回转体水下航行器模型所受到的壁面摩擦阻力，设计并实施了一套测试系统。
The underwater high-speed vehicle surfaces are enveloped by cavity entirely or mostly, which reduces skin friction drag and allows the vehicle to obtain high speed.
水下超高速航行体的全部或大部分表面被空泡包裹，使其阻力显著降低而达到高速航行的目的。
Research on drag reduction mechanism of supercavitation shows that supercavitation can reduce not only the friction drag coefficient but also the pressure drag coefficient.
超空泡减阻机理的研究表明：超空泡不仅可以减小回转体的摩擦阻力，还可以减小回转体的压差阻力。
Friction drag is the major part of the total drag of a transport, so reducing it is essential for improving the performance and reducing the cost of a transport.
民机受到的摩阻占其总阻力很大比例，减少摩阻对改善民机性能和降低成本具有重要意义。
Abstract: Friction drag is the major part of the total drag of a transport, so reducing it is essential for improving the performance and reducing the cost of a transport.
摘要：摩擦阻力占民机总阻力的很大比例，减少摩阻对改善民机性能和降低成本具有重要意义。
Abstract: Friction drag is the major part of the total drag of a transport, so reducing it is essential for improving the performance and reducing the cost of a transport.
摘要：摩擦阻力占民机总阻力的很大比例，减少摩阻对改善民机性能和降低成本具有重要意义。
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