Method for Producing a Surface of a Component, Said Surface Having Reduced Drag and Component with Reduced Drag

Abstract

A method for the production of a riblet film, having at least one surface that reduces airflow resistance involves the provision of a metal film that is structured using a mechanical treatment.

1 - 15 . (canceled) 
     
     
         16 . A method for the production of a riblet film, comprising:
 providing a metal film;   structuring the metal film by mechanical treatment to form a riblet film having riblets on at least one surface, wherein the riblets are arranged in such a manner that the riblets reduce airflow resistance when a fluid flows over the riblets;   surface treating at least one surface of the riblet film.   
     
     
         17 . The method according to  claim 16 , wherein the surface treatment includes anodizing, which forms an oxide layer. 
     
     
         18 . The method according to  claim 17 , further comprising:
 applying an adhesive primer to at least, the oxide layer, which is situated opposite the riblets.   
     
     
         19 . The method according to  claim 17 , further comprising:
 impregnating the oxide layer with a water-repelling or dirt-repelling liquid at least on the surface comprising the riblets.   
     
     
         20 . The method according to  claim 17 , further comprising:
 embedding water-repelling or dirt-repelling solids into the oxide layer at least on the surface which comprising the riblets.   
     
     
         21 . The method according to  claim 17 , further comprising:
 coating the oxide layer with a plasma-supported coating at least on the surface comprising the riblets.   
     
     
         22 . The method according  claim 17 , wherein the oxide layer has fluorinated polymers or modified silanes at least on the surface comprising the riblets. 
     
     
         23 . The method according to  claim 16 , wherein the riblet film has trapezoidal, semi-circular, streamline-shaped, or sawtooth-shaped riblets. 
     
     
         24 . The method according to  claim 16 , wherein the riblets have a riblet width between 20 μm to 130 μm. 
     
     
         25 . The method according to  claim 24 , wherein the riblet width is between 30 μm to 80 μm. 
     
     
         26 . The method according to  claim 25 , wherein the riblet width is between 50 μm to 60 μm. 
     
     
         27 . The method according to  claim 26 , wherein the riblet width is 60 μm. 
     
     
         28 . The method according to  claim 16 , wherein a height of a riblet is half of a distance to a neighboring riblet. 
     
     
         29 . A riblet film, comprising:
 a metal film having a plurality of riblets; and   an anodized surface treatment on at least one surface of the metal film, wherein the riblet film reduces airflow resistance.   
     
     
         30 . A component, comprising:
 a riblet film applied to at least one surface of the component, wherein the riblet film comprises
 a metal film having a plurality of riblets; and 
 an anodized surface treatment on at least one surface of the metal film, 
   wherein the riblet film reduces airflow resistance.   wherein the component is a component of an aircraft, helicopter, or flying body.   
     
     
         31 . The component according to  claim 30 , wherein the component is composed of a fiber composite material.