IP Library › Granted Patent US 11,840,326
Granted Patent B2
US 11,840,326 · App. 17/939,485 · Granted Dec 12, 2023

Aircraft wing with sequentially-timed bellows assembly for optimizing boundary layer control

Inventor: David Thomas Birkenstock (Herndon, VA)
B64C21/02B64C2230/20
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Quick Facts
Patent No.
US 11,840,326
App. No.
17/939,485
Granted
Dec 12, 2023
Kind
B2
Abstract

Methods for optimizing Boundary Layer Control (BLC) systems and related systems (e.g. a Laminar Flow Control (LFC) system or systems, a Static Pressure Thrust (SPT) system or systems, a Boundary Layer Ingestion (BLI)/Wake Immersed Propulsion (WIP) system or systems, and/or low-dissipation BLC fluid-movement system or systems) to operate in concert with each other and a bellows air-moving system are disclosed.

Claims (12)

1. An aircraft wing with a system for optimizing boundary layer control, comprising:

an enclosing structure having a leading edge, a trailing edge, a first wing portion extending between the leading edge and the trailing edge, and a second wing portion extending between the leading edge and the trailing edge and disposed opposite the first wing portion;

an inner cavity defined within the enclosing structure;

at least one bellows assembly disposed in the inner cavity and including at least one primary bellows and at least one secondary bellows operating in a sequentially-timed manner with the primary bellows;

wherein the at least one bellows assembly is spaced apart from inner surfaces of the leading edge, the trailing edge, the first wing portion, and the second wing portion so as to define a void between the at least one bellows assembly and the inner surfaces;

a first boundary control inlet defined in the first wing portion and in communication with the void; and

a second boundary control inlet defined in the second wing portion and in communication with the void.

2. The aircraft wing of claim 1 , further comprising at least one further boundary control inlet defined in the first wing portion and in communication with the void.

3. The aircraft wing of claim 1 , further comprising a series of boundary control inlets defined in the first wing portion and in communication with the void.

4. The aircraft wing of claim 2 , wherein the at least one further boundary control inlet is arranged rearwardly of the first boundary control inlet and aligned, in a chordwise direction of the wing, with the first boundary control inlet.

5. The aircraft wing of claim 3 , wherein the series of boundary control inlets is arranged rearwardly of the first boundary control inlet and aligned, in a chordwise direction of the wing, with the first boundary control inlet; and

wherein the boundary control inlets of the series of boundary control inlets are arranged in a front-aft direction of the wing and aligned in the chordwise direction of the wing.

Continuity (3)
Continuation 16898939 · Jun 11, 2020
Provisional Application 62860040 · Jun 11, 2019
Related Publication 20230002036A1 · Jan 5, 2023