|국가/구분||United States(US) Patent 등록|
|국제특허분류(IPC7판)||B64C-021/00 F01D-005/14 B63B-001/34 B64C-021/10 F03D-001/06|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 0 인용 특허 : 43|
Airfoil and hydrofoil systems include structures having a surface texture defined by fractal geometries. Raised portions or fractal bumps can be included on the surfaces, forming a surface texture. The surface textures can be defined by two-dimensional fractal shapes, partial two-dimensional fractal shapes, non-contiguous fractal shapes, three-dimensional fractal objects, and partial three-dimensional fractal objects. The surfaces can include indents having fractal geometries. The indents can have varying depths and can be bordered by other indents, or b...
1. A drag reduction system comprising: an airfoil or a hydrofoil with a body having a fluid-contact surface operative for movement within a first fluid, wherein the body has a longitudinal axis and, is asymmetrical in cross-section about the longitudinal axis; anda plurality of discrete fractal-based surface features disposed in an asymmetrical pattern on a portion of the body and operative to reduce drag when the fluid-contact surface is moving relative to the first fluid, wherein the plurality of fractal-based surface features comprises:(i) a plurality...