Patent ID: 8702042
Filing Date: 2014-04-22
Classification: B64C,B64D,Y02T,Y10T

Abstract:
1. A flow body, comprising an outer shell having a ram air region and an enveloping flow region which result from a presence of a predetermined flow of a fluid enveloping the flow body in a direction of impinging flow, wherein the enveloping flow region is located to a rear of the ram air region at least during cruise conditions and when viewed in the direction of flow, and at least one flow control device comprising: a plurality of micro-perforations penetrating the outer shell, which are arranged in at least one segment of the outer shell that is situated in the enveloping flow region; a plurality of suction chambers each adjoining an inside of the flow body at the outer shell thereof, wherein upper walls of the plurality of suction chambers are each part of or adjoin an outer skin such that the micro-perforations extend inside the suction chambers, and lower walls of the plurality of suction chambers each present at least one orifice opening or a valve passage, with sidewalls of the plurality of suction chambers delimiting inner spaces thereof from each other, at least one connecting passage which is situated below the suction chambers when viewed in a thickness direction of the flow body, at least one suction device connected to the connecting passage and including a first inlet opening for drawing in fluid having entered through the micro-perforations, which is communicated with the connecting passage, wherein the flow control device additionally comprises a ram fluid feed line which includes a ram fluid inlet opening situated in the ram air region, and the suction device comprises a suction device housing forming an evacuation chamber and including the first inlet opening and an outlet opening, and a nozzle including an inlet opening to which the ram fluid feed line is connected, wherein the outlet opening is situated in a prolongation of a longitudinal direction of the nozzle, and wherein the suction device is positioned in the flow body such that the outlet opening, when viewed in a chord direction of the flow body, is situated in a range between 40% and 60% of an entire flow body chord.