A rotor hub and rotor with a flexible hub axial hinge

By introducing a flexible rotor hub axial hinge structure into the helicopter rotor system, including sleeves, tension-torsion plate assemblies, and stacked shimmy dampers, the problem of inefficient shimmy absorption in bearingless rotor systems has been solved, improving rotor hub life and flight safety.

CN116552782BActive Publication Date: 2026-05-26芜湖联合飞机科技有限公司
3 Cites 0 Cited by

Patent Information

Application Number
CN202310784799.7
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-06-29
Publication Date
2026-05-26
Estimated Expiration
2043-06-29

AI Technical Summary

Technical Problem

In existing bearingless rotor systems, the shimmy of helicopter rotors cannot be efficiently absorbed, resulting in a shortened lifespan of the rotor hub components and blades, increased maintenance costs, and threats to flight safety.

Method used

The rotor hub structure with a flexible hub axial hinge is adopted, including a central component assembly, a flexible hub axial hinge, a sleeve, a tension/torsion plate assembly, a stacked oscillation damper, and a support shaft assembly. The combination of these components absorbs rotor oscillation and improves the stiffness and dynamic flexibility of the rotor hub.

Benefits of technology

It effectively absorbs rotor shimmy, increases the service life of the rotor hub and rotor, optimizes the helicopter's flight characteristics, reduces maintenance costs, and improves flight safety.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

This invention relates to a rotor hub and rotor with a flexible hub axial hinge, belonging to the field of helicopter technology, and solves the problem of poor aeroelastic stability of helicopter rotors caused by the inefficient absorption of rotor shimmy. The rotor hub with a flexible hub axial hinge of this invention includes a central component assembly and a flexible hub axial hinge; the flexible hub axial hinge includes a functional part and a limiting part, with the limiting part disposed between the central component assembly and the functional part; the limiting part includes a support shaft assembly and a lower limit motion assembly; the functional part includes a sleeve, a tension / torsion plate assembly, and a stacked shimmy damping assembly. The rotor hub of this invention has composite damping, which can efficiently absorb the centrifugal force and shimmy of the blades, ensuring both maneuverability and responsiveness while maintaining stable flight; the rotor of this invention can improve the flight performance of helicopters.
Need to check novelty before this filing date? Find Prior Art