US 12,304,619 B2
Method for applying an aerodynamically functional film
Oliver Oeser, Borstel-Hohenraden (DE); Thorsten Gerber, Hamburg (DE); Kai-Christoph Pfingsten, Hamburg (DE); Dominik Brost, Hamburg (DE); Darius Klein, Hamburg (DE); and Holger Rathmann, Sehnde (DE)
Assigned to LUFTHANSA TECHNIK AG, Hamburg (DE)
Appl. No. 17/780,529
Filed by Lufthansa Technik AG, Hamburg (DE)
PCT Filed Nov. 27, 2020, PCT No. PCT/EP2020/083564
§ 371(c)(1), (2) Date May 27, 2022,
PCT Pub. No. WO2021/105316, PCT Pub. Date Jun. 3, 2021.
Claims priority of application No. 10 2019 132 347.9 (DE), filed on Nov. 28, 2019.
Prior Publication US 2023/0348046 A1, Nov. 2, 2023
Int. Cl. B64C 21/10 (2006.01); B64C 1/00 (2006.01); F15D 1/12 (2006.01)
CPC B64C 21/10 (2013.01) [B64C 1/00 (2013.01); F15D 1/12 (2013.01); B64C 2230/26 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method for applying an aerodynamically functional film to a body around which complex flow occurs, the method comprising:
determining flow lines on a surface of the body around which flow occurs for a predetermined surrounding flow state on a basis of a computer model of the body-using a numerical flow simulation;
developing at least one surface segment of the computer model provided with flow lines to form a two-dimensional surface;
locating at least one coherent field in the developed surface segment having local flow directions readable at the flow lines in a predetermined angle range around a main flow direction of the respective field; and
applying the aerodynamically functional film to the body around which flow occurs within the field boundary of the at least one field located in the developed surface segment in such a way that the aerodynamically functional film is aligned along the main flow direction of the respective field.