Invention Grant
- Patent Title: Stiff-in-plane rotor configuration
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Application No.: US14623615Application Date: 2015-02-17
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Publication No.: US09878782B2Publication Date: 2018-01-30
- Inventor: Frank B. Stamps , Patrick R. Tisdale , Tom Donovan , Richard E. Rauber
- Applicant: TEXTRON INNOVATIONS INC.
- Applicant Address: US RI Providence
- Assignee: Textron Innovations Inc.
- Current Assignee: Textron Innovations Inc.
- Current Assignee Address: US RI Providence
- Agent James E. Walton
- Main IPC: B64C27/35
- IPC: B64C27/35 ; B64C27/33 ; B64C27/32 ; B64C27/39 ; B64C27/48

Abstract:
A rotor assembly for a rotary-wing aircraft, the rotor having a central hub assembly with a flexure-type, twist-shank yoke with multiple arms, each arm being adapted for a rotor blade to be mounted thereto. The arms provide for pitch changes of blades attached to the yoke through twisting of portions of the arms about a corresponding pitch axis. An inboard pitch bearing associated with each arm is attached to the hub assembly and allows for rotation of the attached blade about the pitch axis, the inboard pitch bearing also allowing for out-of-plane motion of the arm relative to the hub assembly about a flapping axis. An outboard pitch bearing associated with each arm is attached to the associated arm a selected distance from the inboard pitch bearing and allows for rotation of the attached blade about the pitch axis.
Public/Granted literature
- US20150158583A1 STIFF-IN-PLANE ROTOR CONFIGURATION Public/Granted day:2015-06-11
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