Patent ID: 9487288
Filing Date: 2016-11-08
CPC Classification: B64C,B64F,F15D,Y02T,Y10T

Claim Text:
1. An apparatus for extending laminar flow over an aerodynamic surface having a primary laminar flow region, comprising: a surface skin facesheet comprising a perforated region, the perforated region comprising a plurality of perforations configured to allow a flow of a fluid through the surface skin facesheet; a structural core layer coupled to and configured to structurally support a portion of the surface skin facesheet, wherein a portion of the structural core layer comprise flow channels spanning a thickness of the structural core layer; a channeled stiffener positioned between the perforated region of the surface skin facesheet and the structural core layer, wherein the channeled stiffener is configured to structurally support the surface skin facesheet and channel the flow of the fluid, wherein the channeled stiffener comprises suction channels coupled to the perforated region of the surface skin face sheet, and wherein the suction channels comprise flow holes corresponding to the flow channels; an interior backing facesheet coupled to and configured to structurally support the structural core layer, wherein the interior backing facesheet comprises flow holes corresponding to the flow channels; and a suction device located a distance aft of the primary laminar flow region and configured to draw the fluid from the channeled stiffener through the flow holes in the suction channels, the flow channels in the structural core layer, and the flow holes in the interior backing facesheet.