| 摘要 |
The invention relates to an apparatus for reducing turbulent drag, especially in aircraft and watercraft. The forms of surfaces are described, which delay or prevent boundary layer separation without creating an undesirable drag penalty. These forms can be used for turbulent drag reduction of surfaces in a flow of gas or liquid, for example, for inner surface of a tube. This invention relates to aerodynamic and hydrodynamic components having leading edge devices for the improvement of performance, for example, for construction of bulbous bows for bulk carriers. The term "aerodynamic and hydrodynamic component" is used herein to encompass structures having an airfoil or hydrofoil section and leading edge. This term is intended to include wings, fins, tailplanes, canards, engine components such as turbine and compressor blades, propeller blades, helicopter rotor blades, and similar items. |
