|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||244/209 ; 244/130|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 31 인용 특허 : 0|
The present invention involves laminar flow control for reducing drag on a body moving through a fluid. A skin is provided through which fluid in the boundary layer is drawn. The skin includes a plurality of perforations. The ratio of the effective area of the perforations to the skin area is spatially variable. The ratio is varied to compensate for expected variations in external pressure such that a substantially uniform suction results in a spatially uniform mass flow rate through the skin. Preferably, the perforations are approximately tapered to avo...
A laminar flow control airfoil, said airfoil having at least a first region and a second region, with said first region being subject, during flight, to an external air pressure greater than the external air pressure on said second region, the airfoil comprising: an outer skin having an upper skin surface and a lower skin surface with a plurality of unelongated perforations through said skin, each of said perforations having an effective cross-sectional area, to define an average ratio of effective unelongated perforation area to skin area for any region...