Ducted rotor blade tip extension

US11286036B2 · kind B2 · utility

Assignee

• Textron Innovations Inc. · US

Inventors

• Kirk Landon Groninga · Keller, US
• Daniel Bryan Robertson · Southlake, US
• Matthew Edward Louis · Fort Worth, US
• Robert Glenn Vaughn · Keller, US
• Michael John Ryan · Colleyville, US
• Brent Randal Achttien · Watauga, US

Key dates

• Filing date: Oct 12, 2018
• Grant date: Mar 29, 2022
• Expiry date: Oct 31, 2040

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16J15/3288
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A rotor system is provided in one example embodiment and may include a rotor duct; at least one rotor blade, wherein the at least one rotor blade comprises a tip end; and a tip extension affixed at the tip end of the at least one rotor blade, wherein the tip extension is comprised, at least in part, of a flexible material and the rotor blade has a fixed extended length based on the tip extension. The tip extension may provide a clearance distance between the tip extension and the rotor duct.