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US 2022/0033067 A1Published application
Drag recovery scheme using boundary layer ingestion
AssigneeBlended Wing Aircraft, Inc.
InventorMark Allan Page
Life of this patent
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Abstract
Technologies are described herein for a drag recovery scheme using a boundary layer bypass duct system. In some examples, boundary layer air is routed around the intake of one or more of the engines and reintroduced aft of the engine fan in the nozzle duct in a mixer-ejector scheme. Mixer-ejectors mix the boundary layer flow to increase mass flow.
Claims20
An aircraft, comprising:
- a blended wing body;
- at least one fan housed within a nacelle;
- at least one bypass intake duct configured to receive boundary layer air from a top surface of the blended wing body, the at least one bypass intake duct located proximate to a fan intake of the at least one fan;
- at least one bypass exhaust duct located proximate to a fan exhaust of the at least one fan;
- and
- a passageway, located substantially between the blended wing body and the at least one fan, fluidically connecting the at least one bypass intake duct with the at least one bypass exhaust duct and configured to direct the boundary layer air from the at least one bypass intake duct to the at least one bypass exhaust duct.
3 more elements
A method of reducing drag of an aircraft, comprising a blended wing body, and at least one fan housed within a nacelle, wherein the method comprises:
- receiving, by at least one bypass intake duct, boundary layer air from a top surface of the blended wing body, the at least one bypass intake duct located proximate to a fan intake of the at least one fan;
- fluidically connecting, by a passageway located substantially between the blended wing body and the at least one engine, the at least one bypass intake duct with at least one bypass exhaust duct located proximate to a fan exhaust of the at least one fan;
- and
- directing, by the passageway, the boundary layer air from the at least one bypass intake duct to the at least one bypass exhaust duct.
1 more element
Dependencies are inferred from the claim text.