Method and a device for blocking the pitch of a foldable blade of a rotorcraft rotor
US7530786B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 18, 2006 |
| Grant date | May 12, 2009 |
| Priority date | — |
| Expiry date | Dec 4, 2027 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64C27/50
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The invention relates to a rotor for a rotorcraft having foldable hinged blades, the rotor comprising a hub (10), each blade being connected to the hub via a sleeve, each sleeve being hinged about a pitch axis (15) relative to the hub, the rotor including a respective lag damper (14) associated with each blade, each damper being hinged both to the hub and to the corresponding sleeve, the rotor including a system for controlling the pitch of the blades via respective pitch levers (16) secured to each of the sleeves; the rotor includes two abutments designed to co-operate with tooling for blocking the pitch of the blades, a first abutment presenting a bearing surface (35, 36) matching a shape of revolution about an axis (18) of revolution, and a second abutment (33, 39, 70) designed to act axially along said axis of revolution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.