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US 2021/0197956 A1Published application
Slanted duct stators
AssigneeBell Textron Inc.
InventorsKarl Schroeder, Jonathan Knoll, George Matthew Thompson
Life of this patent
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AssigneeBell Textron Inc.
InventorsKarl Schroeder, Jonathan Knoll, George Matthew Thompson
Estimating the term…
A ducted-rotor aircraft includes a fuselage and first and second ducts that are coupled to the fuselage. Each duct includes a duct ring, a rotor having a plurality of blades, a hub that positions the rotor such that the blades define a blade plane of rotation within the duct ring, and a plurality of stators that are coupled to the hub at respective locations aft of the blade plane of rotation. Each of the plurality of stators defines a leading edge that is slanted toward the blade plane of rotation. The leading edges of the stators are slanted to follow a contour defined by the blades. The leading edges may also be slanted to maintain a distance of at least one blade inboard chord length between the leading edges of the stators and respective trailing edges of the blades.
A duct structure for a duct of a ducted-rotor aircraft, the duct including a rotor having a plurality of blades, the duct structure comprising:
A ducted-rotor aircraft comprising:
A method of decreasing noise generated by a ducted rotor, the method comprising:
Dependencies are inferred from the claim text.